Merge tag 'refs/tags/sync-piper' into sync-stage

conformance/conformance_cpp.cc

@@ -55,6 +55,7 @@ using google::protobuf::util::JsonToBinaryString;
 using google::protobuf::util::NewTypeResolverForDescriptorPool;
 using google::protobuf::util::TypeResolver;
 using protobuf_test_messages::proto3::TestAllTypesProto3;
+using protobuf_test_messages::proto2::TestAllTypesProto2;
 using std::string;
 
 static const char kTypeUrlPrefix[] = "type.googleapis.com";
@@ -102,6 +103,8 @@ void CheckedWrite(int fd, const void *buf, size_t len) {
 
 void DoTest(const ConformanceRequest& request, ConformanceResponse* response) {
   Message *test_message;
+  google::protobuf::LinkMessageReflection<TestAllTypesProto2>();
+  google::protobuf::LinkMessageReflection<TestAllTypesProto3>();
   const Descriptor *descriptor = DescriptorPool::generated_pool()->FindMessageTypeByName(
       request.message_type());
   if (!descriptor) {

csharp/src/Google.Protobuf.Test.TestProtos/UnittestProto3Optional.cs

@@ -25,49 +25,54 @@ namespace ProtobufUnittest {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
             "Ci5nb29nbGUvcHJvdG9idWYvdW5pdHRlc3RfcHJvdG8zX29wdGlvbmFsLnBy",
-            "b3RvEhFwcm90b2J1Zl91bml0dGVzdCKxCgoSVGVzdFByb3RvM09wdGlvbmFs",
-            "EhsKDm9wdGlvbmFsX2ludDMyGAEgASgFSACIAQESGwoOb3B0aW9uYWxfaW50",
-            "NjQYAiABKANIAYgBARIcCg9vcHRpb25hbF91aW50MzIYAyABKA1IAogBARIc",
-            "Cg9vcHRpb25hbF91aW50NjQYBCABKARIA4gBARIcCg9vcHRpb25hbF9zaW50",
-            "MzIYBSABKBFIBIgBARIcCg9vcHRpb25hbF9zaW50NjQYBiABKBJIBYgBARId",
-            "ChBvcHRpb25hbF9maXhlZDMyGAcgASgHSAaIAQESHQoQb3B0aW9uYWxfZml4",
-            "ZWQ2NBgIIAEoBkgHiAEBEh4KEW9wdGlvbmFsX3NmaXhlZDMyGAkgASgPSAiI",
-            "AQESHgoRb3B0aW9uYWxfc2ZpeGVkNjQYCiABKBBICYgBARIbCg5vcHRpb25h",
-            "bF9mbG9hdBgLIAEoAkgKiAEBEhwKD29wdGlvbmFsX2RvdWJsZRgMIAEoAUgL",
-            "iAEBEhoKDW9wdGlvbmFsX2Jvb2wYDSABKAhIDIgBARIcCg9vcHRpb25hbF9z",
-            "dHJpbmcYDiABKAlIDYgBARIbCg5vcHRpb25hbF9ieXRlcxgPIAEoDEgOiAEB",
-            "Eh4KDW9wdGlvbmFsX2NvcmQYECABKAlCAggBSA+IAQESWQoXb3B0aW9uYWxf",
-            "bmVzdGVkX21lc3NhZ2UYEiABKAsyMy5wcm90b2J1Zl91bml0dGVzdC5UZXN0",
-            "UHJvdG8zT3B0aW9uYWwuTmVzdGVkTWVzc2FnZUgQiAEBElkKE2xhenlfbmVz",
-            "dGVkX21lc3NhZ2UYEyABKAsyMy5wcm90b2J1Zl91bml0dGVzdC5UZXN0UHJv",
-            "dG8zT3B0aW9uYWwuTmVzdGVkTWVzc2FnZUICKAFIEYgBARJTChRvcHRpb25h",
-            "bF9uZXN0ZWRfZW51bRgVIAEoDjIwLnByb3RvYnVmX3VuaXR0ZXN0LlRlc3RQ",
-            "cm90bzNPcHRpb25hbC5OZXN0ZWRFbnVtSBKIAQESFgoOc2luZ3VsYXJfaW50",
-            "MzIYFiABKAUSFgoOc2luZ3VsYXJfaW50NjQYFyABKAMaJwoNTmVzdGVkTWVz",
-            "c2FnZRIPCgJiYhgBIAEoBUgAiAEBQgUKA19iYiJKCgpOZXN0ZWRFbnVtEg8K",
-            "C1VOU1BFQ0lGSUVEEAASBwoDRk9PEAESBwoDQkFSEAISBwoDQkFaEAMSEAoD",
-            "TkVHEP///////////wFCEQoPX29wdGlvbmFsX2ludDMyQhEKD19vcHRpb25h",
-            "bF9pbnQ2NEISChBfb3B0aW9uYWxfdWludDMyQhIKEF9vcHRpb25hbF91aW50",
-            "NjRCEgoQX29wdGlvbmFsX3NpbnQzMkISChBfb3B0aW9uYWxfc2ludDY0QhMK",
-            "EV9vcHRpb25hbF9maXhlZDMyQhMKEV9vcHRpb25hbF9maXhlZDY0QhQKEl9v",
-            "cHRpb25hbF9zZml4ZWQzMkIUChJfb3B0aW9uYWxfc2ZpeGVkNjRCEQoPX29w",
-            "dGlvbmFsX2Zsb2F0QhIKEF9vcHRpb25hbF9kb3VibGVCEAoOX29wdGlvbmFs",
-            "X2Jvb2xCEgoQX29wdGlvbmFsX3N0cmluZ0IRCg9fb3B0aW9uYWxfYnl0ZXNC",
-            "EAoOX29wdGlvbmFsX2NvcmRCGgoYX29wdGlvbmFsX25lc3RlZF9tZXNzYWdl",
-            "QhYKFF9sYXp5X25lc3RlZF9tZXNzYWdlQhcKFV9vcHRpb25hbF9uZXN0ZWRf",
-            "ZW51bSKJAgoZVGVzdFByb3RvM09wdGlvbmFsTWVzc2FnZRJSCg5uZXN0ZWRf",
-            "bWVzc2FnZRgBIAEoCzI6LnByb3RvYnVmX3VuaXR0ZXN0LlRlc3RQcm90bzNP",
-            "cHRpb25hbE1lc3NhZ2UuTmVzdGVkTWVzc2FnZRJgChdvcHRpb25hbF9uZXN0",
-            "ZWRfbWVzc2FnZRgCIAEoCzI6LnByb3RvYnVmX3VuaXR0ZXN0LlRlc3RQcm90",
-            "bzNPcHRpb25hbE1lc3NhZ2UuTmVzdGVkTWVzc2FnZUgAiAEBGhoKDU5lc3Rl",
-            "ZE1lc3NhZ2USCQoBcxgBIAEoCUIaChhfb3B0aW9uYWxfbmVzdGVkX21lc3Nh",
-            "Z2VCJQohY29tLmdvb2dsZS5wcm90b2J1Zi50ZXN0aW5nLnByb3RvUAFiBnBy",
-            "b3RvMw=="));
+            "b3RvEhFwcm90b2J1Zl91bml0dGVzdBogZ29vZ2xlL3Byb3RvYnVmL2Rlc2Ny",
+            "aXB0b3IucHJvdG8isQoKElRlc3RQcm90bzNPcHRpb25hbBIbCg5vcHRpb25h",
+            "bF9pbnQzMhgBIAEoBUgAiAEBEhsKDm9wdGlvbmFsX2ludDY0GAIgASgDSAGI",
+            "AQESHAoPb3B0aW9uYWxfdWludDMyGAMgASgNSAKIAQESHAoPb3B0aW9uYWxf",
+            "dWludDY0GAQgASgESAOIAQESHAoPb3B0aW9uYWxfc2ludDMyGAUgASgRSASI",
+            "AQESHAoPb3B0aW9uYWxfc2ludDY0GAYgASgSSAWIAQESHQoQb3B0aW9uYWxf",
+            "Zml4ZWQzMhgHIAEoB0gGiAEBEh0KEG9wdGlvbmFsX2ZpeGVkNjQYCCABKAZI",
+            "B4gBARIeChFvcHRpb25hbF9zZml4ZWQzMhgJIAEoD0gIiAEBEh4KEW9wdGlv",
+            "bmFsX3NmaXhlZDY0GAogASgQSAmIAQESGwoOb3B0aW9uYWxfZmxvYXQYCyAB",
+            "KAJICogBARIcCg9vcHRpb25hbF9kb3VibGUYDCABKAFIC4gBARIaCg1vcHRp",
+            "b25hbF9ib29sGA0gASgISAyIAQESHAoPb3B0aW9uYWxfc3RyaW5nGA4gASgJ",
+            "SA2IAQESGwoOb3B0aW9uYWxfYnl0ZXMYDyABKAxIDogBARIeCg1vcHRpb25h",
+            "bF9jb3JkGBAgASgJQgIIAUgPiAEBElkKF29wdGlvbmFsX25lc3RlZF9tZXNz",
+            "YWdlGBIgASgLMjMucHJvdG9idWZfdW5pdHRlc3QuVGVzdFByb3RvM09wdGlv",
+            "bmFsLk5lc3RlZE1lc3NhZ2VIEIgBARJZChNsYXp5X25lc3RlZF9tZXNzYWdl",
+            "GBMgASgLMjMucHJvdG9idWZfdW5pdHRlc3QuVGVzdFByb3RvM09wdGlvbmFs",
+            "Lk5lc3RlZE1lc3NhZ2VCAigBSBGIAQESUwoUb3B0aW9uYWxfbmVzdGVkX2Vu",
+            "dW0YFSABKA4yMC5wcm90b2J1Zl91bml0dGVzdC5UZXN0UHJvdG8zT3B0aW9u",
+            "YWwuTmVzdGVkRW51bUgSiAEBEhYKDnNpbmd1bGFyX2ludDMyGBYgASgFEhYK",
+            "DnNpbmd1bGFyX2ludDY0GBcgASgDGicKDU5lc3RlZE1lc3NhZ2USDwoCYmIY",
+            "ASABKAVIAIgBAUIFCgNfYmIiSgoKTmVzdGVkRW51bRIPCgtVTlNQRUNJRklF",
+            "RBAAEgcKA0ZPTxABEgcKA0JBUhACEgcKA0JBWhADEhAKA05FRxD/////////",
+            "//8BQhEKD19vcHRpb25hbF9pbnQzMkIRCg9fb3B0aW9uYWxfaW50NjRCEgoQ",
+            "X29wdGlvbmFsX3VpbnQzMkISChBfb3B0aW9uYWxfdWludDY0QhIKEF9vcHRp",
+            "b25hbF9zaW50MzJCEgoQX29wdGlvbmFsX3NpbnQ2NEITChFfb3B0aW9uYWxf",
+            "Zml4ZWQzMkITChFfb3B0aW9uYWxfZml4ZWQ2NEIUChJfb3B0aW9uYWxfc2Zp",
+            "eGVkMzJCFAoSX29wdGlvbmFsX3NmaXhlZDY0QhEKD19vcHRpb25hbF9mbG9h",
+            "dEISChBfb3B0aW9uYWxfZG91YmxlQhAKDl9vcHRpb25hbF9ib29sQhIKEF9v",
+            "cHRpb25hbF9zdHJpbmdCEQoPX29wdGlvbmFsX2J5dGVzQhAKDl9vcHRpb25h",
+            "bF9jb3JkQhoKGF9vcHRpb25hbF9uZXN0ZWRfbWVzc2FnZUIWChRfbGF6eV9u",
+            "ZXN0ZWRfbWVzc2FnZUIXChVfb3B0aW9uYWxfbmVzdGVkX2VudW0iiQIKGVRl",
+            "c3RQcm90bzNPcHRpb25hbE1lc3NhZ2USUgoObmVzdGVkX21lc3NhZ2UYASAB",
+            "KAsyOi5wcm90b2J1Zl91bml0dGVzdC5UZXN0UHJvdG8zT3B0aW9uYWxNZXNz",
+            "YWdlLk5lc3RlZE1lc3NhZ2USYAoXb3B0aW9uYWxfbmVzdGVkX21lc3NhZ2UY",
+            "AiABKAsyOi5wcm90b2J1Zl91bml0dGVzdC5UZXN0UHJvdG8zT3B0aW9uYWxN",
+            "ZXNzYWdlLk5lc3RlZE1lc3NhZ2VIAIgBARoaCg1OZXN0ZWRNZXNzYWdlEgkK",
+            "AXMYASABKAlCGgoYX29wdGlvbmFsX25lc3RlZF9tZXNzYWdlIqkBChhQcm90",
+            "bzNPcHRpb25hbEV4dGVuc2lvbnMyPAoPZXh0X25vX29wdGlvbmFsEh8uZ29v",
+            "Z2xlLnByb3RvYnVmLk1lc3NhZ2VPcHRpb25zGIjN2akBIAEoBTJBChFleHRf",
+            "d2l0aF9vcHRpb25hbBIfLmdvb2dsZS5wcm90b2J1Zi5NZXNzYWdlT3B0aW9u",
+            "cxiJzdmpASABKAWIAQE6DMDozM0KCMjozM0KEEIlCiFjb20uZ29vZ2xlLnBy",
+            "b3RvYnVmLnRlc3RpbmcucHJvdG9QAWIGcHJvdG8z"));
       descriptor = pbr::FileDescriptor.FromGeneratedCode(descriptorData,
-          new pbr::FileDescriptor[] { },
+          new pbr::FileDescriptor[] { global::Google.Protobuf.Reflection.DescriptorReflection.Descriptor, },
           new pbr::GeneratedClrTypeInfo(null, null, new pbr::GeneratedClrTypeInfo[] {
             new pbr::GeneratedClrTypeInfo(typeof(global::ProtobufUnittest.TestProto3Optional), global::ProtobufUnittest.TestProto3Optional.Parser, new[]{ "OptionalInt32", "OptionalInt64", "OptionalUint32", "OptionalUint64", "OptionalSint32", "OptionalSint64", "OptionalFixed32", "OptionalFixed64", "OptionalSfixed32", "OptionalSfixed64", "OptionalFloat", "OptionalDouble", "OptionalBool", "OptionalString", "OptionalBytes", "OptionalCord", "OptionalNestedMessage", "LazyNestedMessage", "OptionalNestedEnum", "SingularInt32", "SingularInt64" }, new[]{ "OptionalInt32", "OptionalInt64", "OptionalUint32", "OptionalUint64", "OptionalSint32", "OptionalSint64", "OptionalFixed32", "OptionalFixed64", "OptionalSfixed32", "OptionalSfixed64", "OptionalFloat", "OptionalDouble", "OptionalBool", "OptionalString", "OptionalBytes", "OptionalCord", "OptionalNestedMessage", "LazyNestedMessage", "OptionalNestedEnum" }, new[]{ typeof(global::ProtobufUnittest.TestProto3Optional.Types.NestedEnum) }, null, new pbr::GeneratedClrTypeInfo[] { new pbr::GeneratedClrTypeInfo(typeof(global::ProtobufUnittest.TestProto3Optional.Types.NestedMessage), global::ProtobufUnittest.TestProto3Optional.Types.NestedMessage.Parser, new[]{ "Bb" }, new[]{ "Bb" }, null, null, null)}),
-            new pbr::GeneratedClrTypeInfo(typeof(global::ProtobufUnittest.TestProto3OptionalMessage), global::ProtobufUnittest.TestProto3OptionalMessage.Parser, new[]{ "NestedMessage", "OptionalNestedMessage" }, new[]{ "OptionalNestedMessage" }, null, null, new pbr::GeneratedClrTypeInfo[] { new pbr::GeneratedClrTypeInfo(typeof(global::ProtobufUnittest.TestProto3OptionalMessage.Types.NestedMessage), global::ProtobufUnittest.TestProto3OptionalMessage.Types.NestedMessage.Parser, new[]{ "S" }, null, null, null, null)})
+            new pbr::GeneratedClrTypeInfo(typeof(global::ProtobufUnittest.TestProto3OptionalMessage), global::ProtobufUnittest.TestProto3OptionalMessage.Parser, new[]{ "NestedMessage", "OptionalNestedMessage" }, new[]{ "OptionalNestedMessage" }, null, null, new pbr::GeneratedClrTypeInfo[] { new pbr::GeneratedClrTypeInfo(typeof(global::ProtobufUnittest.TestProto3OptionalMessage.Types.NestedMessage), global::ProtobufUnittest.TestProto3OptionalMessage.Types.NestedMessage.Parser, new[]{ "S" }, null, null, null, null)}),
+            new pbr::GeneratedClrTypeInfo(typeof(global::ProtobufUnittest.Proto3OptionalExtensions), global::ProtobufUnittest.Proto3OptionalExtensions.Parser, null, null, null, new pb::Extension[] { global::ProtobufUnittest.Proto3OptionalExtensions.Extensions.ExtNoOptional, global::ProtobufUnittest.Proto3OptionalExtensions.Extensions.ExtWithOptional }, null)
           }));
     }
     #endregion
@@ -1789,6 +1794,153 @@ namespace ProtobufUnittest {
 
   }
 
+  public sealed partial class Proto3OptionalExtensions : pb::IMessage<Proto3OptionalExtensions>
+  #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
+      , pb::IBufferMessage
+  #endif
+  {
+    private static readonly pb::MessageParser<Proto3OptionalExtensions> _parser = new pb::MessageParser<Proto3OptionalExtensions>(() => new Proto3OptionalExtensions());
+    private pb::UnknownFieldSet _unknownFields;
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public static pb::MessageParser<Proto3OptionalExtensions> Parser { get { return _parser; } }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::ProtobufUnittest.UnittestProto3OptionalReflection.Descriptor.MessageTypes[2]; }
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    pbr::MessageDescriptor pb::IMessage.Descriptor {
+      get { return Descriptor; }
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public Proto3OptionalExtensions() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public Proto3OptionalExtensions(Proto3OptionalExtensions other) : this() {
+      _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public Proto3OptionalExtensions Clone() {
+      return new Proto3OptionalExtensions(this);
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public override bool Equals(object other) {
+      return Equals(other as Proto3OptionalExtensions);
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public bool Equals(Proto3OptionalExtensions other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      return Equals(_unknownFields, other._unknownFields);
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public override int GetHashCode() {
+      int hash = 1;
+      if (_unknownFields != null) {
+        hash ^= _unknownFields.GetHashCode();
+      }
+      return hash;
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public override string ToString() {
+      return pb::JsonFormatter.ToDiagnosticString(this);
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public void WriteTo(pb::CodedOutputStream output) {
+    #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
+      output.WriteRawMessage(this);
+    #else
+      if (_unknownFields != null) {
+        _unknownFields.WriteTo(output);
+      }
+    #endif
+    }
+
+    #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
+      if (_unknownFields != null) {
+        _unknownFields.WriteTo(ref output);
+      }
+    }
+    #endif
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public int CalculateSize() {
+      int size = 0;
+      if (_unknownFields != null) {
+        size += _unknownFields.CalculateSize();
+      }
+      return size;
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public void MergeFrom(Proto3OptionalExtensions other) {
+      if (other == null) {
+        return;
+      }
+      _unknownFields = pb::UnknownFieldSet.MergeFrom(_unknownFields, other._unknownFields);
+    }
+
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public void MergeFrom(pb::CodedInputStream input) {
+    #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
+      input.ReadRawMessage(this);
+    #else
+      uint tag;
+      while ((tag = input.ReadTag()) != 0) {
+        switch(tag) {
+          default:
+            _unknownFields = pb::UnknownFieldSet.MergeFieldFrom(_unknownFields, input);
+            break;
+        }
+      }
+    #endif
+    }
+
+    #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
+      uint tag;
+      while ((tag = input.ReadTag()) != 0) {
+        switch(tag) {
+          default:
+            _unknownFields = pb::UnknownFieldSet.MergeFieldFrom(_unknownFields, ref input);
+            break;
+        }
+      }
+    }
+    #endif
+
+    #region Extensions
+    /// <summary>Container for extensions for other messages declared in the Proto3OptionalExtensions message type.</summary>
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public static partial class Extensions {
+      public static readonly pb::Extension<global::Google.Protobuf.Reflection.MessageOptions, int> ExtNoOptional =
+        new pb::Extension<global::Google.Protobuf.Reflection.MessageOptions, int>(355886728, pb::FieldCodec.ForInt32(2847093824, 0));
+      public static readonly pb::Extension<global::Google.Protobuf.Reflection.MessageOptions, int> ExtWithOptional =
+        new pb::Extension<global::Google.Protobuf.Reflection.MessageOptions, int>(355886729, pb::FieldCodec.ForInt32(2847093832, 0));
+    }
+    #endregion
+
+  }
+
   #endregion
 
 }

java/core/src/main/java/com/google/protobuf/CodedInputStream.java

@@ -2055,6 +2055,44 @@ public abstract class CodedInputStream {
       totalBytesRetired = 0;
     }
 
+    /*
+     * The following wrapper methods exist so that InvalidProtocolBufferExceptions thrown by the
+     * InputStream can be differentiated from ones thrown by CodedInputStream itself. Each call to
+     * an InputStream method that can throw IOException must be wrapped like this. We do this
+     * because we sometimes need to modify IPBE instances after they are thrown far away from where
+     * they are thrown (ex. to add unfinished messages) and we use this signal elsewhere in the
+     * exception catch chain to know when to perform these operations directly or to wrap the
+     * exception in their own IPBE so the extra information can be communicated without trampling
+     * downstream information.
+     */
+    private static int read(InputStream input, byte[] data, int offset, int length)
+        throws IOException {
+      try {
+        return input.read(data, offset, length);
+      } catch (InvalidProtocolBufferException e) {
+        e.setThrownFromInputStream();
+        throw e;
+      }
+    }
+
+    private static long skip(InputStream input, long length) throws IOException {
+      try {
+        return input.skip(length);
+      } catch (InvalidProtocolBufferException e) {
+        e.setThrownFromInputStream();
+        throw e;
+      }
+    }
+
+    private static int available(InputStream input) throws IOException {
+      try {
+        return input.available();
+      } catch (InvalidProtocolBufferException e) {
+        e.setThrownFromInputStream();
+        throw e;
+      }
+    }
+
     @Override
     public int readTag() throws IOException {
       if (isAtEnd()) {
@@ -2783,7 +2821,8 @@ public abstract class CodedInputStream {
 
       // Here we should refill the buffer as many bytes as possible.
       int bytesRead =
-          input.read(
+          read(
+              input,
               buffer,
               bufferSize,
               Math.min(
@@ -2905,7 +2944,7 @@ public abstract class CodedInputStream {
       // Determine the number of bytes we need to read from the input stream.
       int sizeLeft = size - bufferedBytes;
       // TODO(nathanmittler): Consider using a value larger than DEFAULT_BUFFER_SIZE.
-      if (sizeLeft < DEFAULT_BUFFER_SIZE || sizeLeft <= input.available()) {
+      if (sizeLeft < DEFAULT_BUFFER_SIZE || sizeLeft <= available(input)) {
         // Either the bytes we need are known to be available, or the required buffer is
         // within an allowed threshold - go ahead and allocate the buffer now.
         final byte[] bytes = new byte[size];
@@ -2919,7 +2958,7 @@ public abstract class CodedInputStream {
         // Fill the remaining bytes from the input stream.
         int tempPos = bufferedBytes;
         while (tempPos < bytes.length) {
-          int n = input.read(bytes, tempPos, size - tempPos);
+          int n = read(input, bytes, tempPos, size - tempPos);
           if (n == -1) {
             throw InvalidProtocolBufferException.truncatedMessage();
           }
@@ -3047,7 +3086,7 @@ public abstract class CodedInputStream {
         try {
           while (totalSkipped < size) {
             int toSkip = size - totalSkipped;
-            long skipped = input.skip(toSkip);
+            long skipped = skip(input, toSkip);
             if (skipped < 0 || skipped > toSkip) {
               throw new IllegalStateException(
                   input.getClass()

java/core/src/main/java/com/google/protobuf/FieldSet.java

@@ -282,7 +282,7 @@ final class FieldSet<T extends FieldSet.FieldDescriptorLite<T>> {
 
       // Wrap the contents in a new list so that the caller cannot change
       // the list's contents after setting it.
-      final List newList = new ArrayList();
+      final List newList = new ArrayList<>();
       newList.addAll((List) value);
       for (final Object element : newList) {
         verifyType(descriptor, element);

java/core/src/main/java/com/google/protobuf/GeneratedMessageLite.java

@@ -1537,11 +1537,16 @@ public abstract class GeneratedMessageLite<
       Schema<T> schema = Protobuf.getInstance().schemaFor(result);
       schema.mergeFrom(result, CodedInputStreamReader.forCodedInput(input), extensionRegistry);
       schema.makeImmutable(result);
+    } catch (InvalidProtocolBufferException e) {
+      if (e.getThrownFromInputStream()) {
+        e = new InvalidProtocolBufferException(e);
+      }
+      throw e.setUnfinishedMessage(result);
     } catch (IOException e) {
       if (e.getCause() instanceof InvalidProtocolBufferException) {
         throw (InvalidProtocolBufferException) e.getCause();
       }
-      throw new InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(result);
+      throw new InvalidProtocolBufferException(e).setUnfinishedMessage(result);
     } catch (RuntimeException e) {
       if (e.getCause() instanceof InvalidProtocolBufferException) {
         throw (InvalidProtocolBufferException) e.getCause();
@@ -1565,11 +1570,16 @@ public abstract class GeneratedMessageLite<
       if (result.memoizedHashCode != 0) {
         throw new RuntimeException();
       }
+    } catch (InvalidProtocolBufferException e) {
+      if (e.getThrownFromInputStream()) {
+        e = new InvalidProtocolBufferException(e);
+      }
+      throw e.setUnfinishedMessage(result);
     } catch (IOException e) {
       if (e.getCause() instanceof InvalidProtocolBufferException) {
         throw (InvalidProtocolBufferException) e.getCause();
       }
-      throw new InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(result);
+      throw new InvalidProtocolBufferException(e).setUnfinishedMessage(result);
     } catch (IndexOutOfBoundsException e) {
       throw InvalidProtocolBufferException.truncatedMessage().setUnfinishedMessage(result);
     }
@@ -1727,8 +1737,13 @@ public abstract class GeneratedMessageLite<
         return null;
       }
       size = CodedInputStream.readRawVarint32(firstByte, input);
+    } catch (InvalidProtocolBufferException e) {
+      if (e.getThrownFromInputStream()) {
+        e = new InvalidProtocolBufferException(e);
+      }
+      throw e;
     } catch (IOException e) {
-      throw new InvalidProtocolBufferException(e.getMessage());
+      throw new InvalidProtocolBufferException(e);
     }
     InputStream limitedInput = new LimitedInputStream(input, size);
     CodedInputStream codedInput = CodedInputStream.newInstance(limitedInput);

java/core/src/main/java/com/google/protobuf/InvalidProtocolBufferException.java

@@ -41,6 +41,7 @@ import java.io.IOException;
 public class InvalidProtocolBufferException extends IOException {
   private static final long serialVersionUID = -1616151763072450476L;
   private MessageLite unfinishedMessage = null;
+  private boolean wasThrownFromInputStream;
 
   public InvalidProtocolBufferException(final String description) {
     super(description);
@@ -72,6 +73,28 @@ public class InvalidProtocolBufferException extends IOException {
     return unfinishedMessage;
   }
 
+  /** Set by CodedInputStream */
+  void setThrownFromInputStream() {
+    /* This write can be racy if the same exception is stored and then thrown by multiple custom
+     * InputStreams on different threads. But since it only ever moves from false->true, there's no
+     * problem. A thread checking this condition after catching this exception from a delegate
+     * stram of CodedInputStream is guaranteed to always observe true, because a write on the same
+     * thread set the value when the exception left the delegate. A thread checking the same
+     * condition with an exception created by CodedInputStream is guaranteed to always see false,
+     * because the exception has not been exposed to any code that could publish it to other threads
+     * and cause a write.
+     */
+    wasThrownFromInputStream = true;
+  }
+
+  /**
+   * Allows code catching IOException from CodedInputStream to tell whether this instance was thrown
+   * by a delegate InputStream, rather than directly by a parse failure.
+   */
+  boolean getThrownFromInputStream() {
+    return wasThrownFromInputStream;
+  }
+
   /**
    * Unwraps the underlying {@link IOException} if this exception was caused by an I/O problem.
    * Otherwise, returns {@code this}.

java/core/src/main/java/com/google/protobuf/UnsafeUtil.java

@@ -346,7 +346,7 @@ final class UnsafeUtil {
     return MEMORY_ACCESSOR.supportsUnsafeByteBufferOperations();
   }
 
-  private static boolean determineAndroidSupportByAddressSize(Class<?> addressClass) {
+  static boolean determineAndroidSupportByAddressSize(Class<?> addressClass) {
     if (!Android.isOnAndroidDevice()) {
       return false;
     }

java/lite/src/test/java/com/google/protobuf/LiteTest.java

@@ -38,6 +38,7 @@ import com.google.protobuf.UnittestImportLite.ImportEnumLite;
 import com.google.protobuf.UnittestImportPublicLite.PublicImportMessageLite;
 import com.google.protobuf.UnittestLite.ForeignEnumLite;
 import com.google.protobuf.UnittestLite.ForeignMessageLite;
+import com.google.protobuf.UnittestLite.RecursiveMessage;
 import com.google.protobuf.UnittestLite.TestAllExtensionsLite;
 import com.google.protobuf.UnittestLite.TestAllTypesLite;
 import com.google.protobuf.UnittestLite.TestAllTypesLite.NestedEnum;
@@ -61,6 +62,7 @@ import protobuf_unittest.lite_equals_and_hash.LiteEqualsAndHash.TestRecursiveOne
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.OutputStream;
 import java.lang.reflect.Field;
 import java.nio.ByteBuffer;
@@ -1638,6 +1640,160 @@ public class LiteTest extends TestCase {
     }
   }
 
+  public void testParseFromStream_IOExceptionNotLost() throws Exception {
+    final IOException readException = new IOException();
+    try {
+      TestAllTypesLite.parseFrom(
+          CodedInputStream.newInstance(
+              new InputStream() {
+                @Override
+                public int read() throws IOException {
+                  throw readException;
+                }
+              }));
+      fail();
+    } catch (InvalidProtocolBufferException expected) {
+      boolean found = false;
+      for (Throwable exception = expected; exception != null; exception = exception.getCause()) {
+        if (exception == readException) {
+          found = true;
+          break;
+        }
+      }
+      if (!found) {
+        throw new AssertionError("Lost cause of parsing error", expected);
+      }
+    }
+  }
+
+  public void testParseDelimitedFromStream_IOExceptionNotLost() throws Exception {
+    final IOException readException = new IOException();
+    try {
+      TestAllTypesLite.parseDelimitedFrom(
+          new InputStream() {
+            @Override
+            public int read() throws IOException {
+              throw readException;
+            }
+          });
+      fail();
+    } catch (InvalidProtocolBufferException expected) {
+      boolean found = false;
+      for (Throwable exception = expected; exception != null; exception = exception.getCause()) {
+        if (exception == readException) {
+          found = true;
+          break;
+        }
+      }
+      if (!found) {
+        throw new AssertionError("Lost cause of parsing error", expected);
+      }
+    }
+  }
+
+  public void testParseFromArray_manyNestedMessagesError() throws Exception {
+    RecursiveMessage.Builder recursiveMessage =
+        RecursiveMessage.newBuilder().setPayload(ByteString.copyFrom(new byte[1]));
+    for (int i = 0; i < 20; i++) {
+      recursiveMessage = RecursiveMessage.newBuilder().setRecurse(recursiveMessage.build());
+    }
+    byte[] result = recursiveMessage.build().toByteArray();
+    result[
+            result.length
+                - CodedOutputStream.computeTagSize(RecursiveMessage.PAYLOAD_FIELD_NUMBER)
+                - CodedOutputStream.computeLengthDelimitedFieldSize(1)] =
+        0; // Set invalid tag
+    try {
+      RecursiveMessage.parseFrom(result);
+      fail("Result was: " + Arrays.toString(result));
+    } catch (InvalidProtocolBufferException expected) {
+      boolean found = false;
+      int exceptionCount = 0;
+      for (Throwable exception = expected; exception != null; exception = exception.getCause()) {
+        if (exception instanceof InvalidProtocolBufferException) {
+          exceptionCount++;
+        }
+        for (StackTraceElement element : exception.getStackTrace()) {
+          if (InvalidProtocolBufferException.class.getName().equals(element.getClassName())
+              && "invalidTag".equals(element.getMethodName())) {
+            found = true;
+          } else if (Android.isOnAndroidDevice()
+              && "decodeUnknownField".equals(element.getMethodName())) {
+            // Android is missing the first element of the stack trace - b/181147885
+            found = true;
+          }
+        }
+      }
+      if (!found) {
+        throw new AssertionError("Lost cause of parsing error", expected);
+      }
+      if (exceptionCount > 1) {
+        throw new AssertionError(exceptionCount + " nested parsing exceptions", expected);
+      }
+    }
+  }
+
+  public void testParseFromStream_manyNestedMessagesError() throws Exception {
+    RecursiveMessage.Builder recursiveMessage =
+        RecursiveMessage.newBuilder().setPayload(ByteString.copyFrom(new byte[1]));
+    for (int i = 0; i < 20; i++) {
+      recursiveMessage = RecursiveMessage.newBuilder().setRecurse(recursiveMessage.build());
+    }
+    byte[] result = recursiveMessage.build().toByteArray();
+    result[
+            result.length
+                - CodedOutputStream.computeTagSize(RecursiveMessage.PAYLOAD_FIELD_NUMBER)
+                - CodedOutputStream.computeLengthDelimitedFieldSize(1)] =
+        0; // Set invalid tag
+    try {
+      RecursiveMessage.parseFrom(CodedInputStream.newInstance(new ByteArrayInputStream(result)));
+      fail("Result was: " + Arrays.toString(result));
+    } catch (InvalidProtocolBufferException expected) {
+      boolean found = false;
+      int exceptionCount = 0;
+      for (Throwable exception = expected; exception != null; exception = exception.getCause()) {
+        if (exception instanceof InvalidProtocolBufferException) {
+          exceptionCount++;
+        }
+        for (StackTraceElement element : exception.getStackTrace()) {
+          if (InvalidProtocolBufferException.class.getName().equals(element.getClassName())
+              && "invalidTag".equals(element.getMethodName())) {
+            found = true;
+          } else if (Android.isOnAndroidDevice() && "readTag".equals(element.getMethodName())) {
+            // Android is missing the first element of the stack trace - b/181147885
+            found = true;
+          }
+        }
+      }
+      if (!found) {
+        throw new AssertionError("Lost cause of parsing error", expected);
+      }
+      if (exceptionCount > 1) {
+        throw new AssertionError(exceptionCount + " nested parsing exceptions", expected);
+      }
+    }
+  }
+
+  public void testParseFromStream_sneakyNestedException() throws Exception {
+    final InvalidProtocolBufferException sketchy =
+        new InvalidProtocolBufferException("Created in a sketchy way!")
+            .setUnfinishedMessage(TestAllTypesLite.getDefaultInstance());
+    try {
+      RecursiveMessage.parseFrom(
+          CodedInputStream.newInstance(
+              new InputStream() {
+                @Override
+                public int read() throws IOException {
+                  throw sketchy;
+                }
+              }));
+      fail();
+    } catch (InvalidProtocolBufferException expected) {
+      assertNotSame(expected, sketchy);
+    }
+    assertEquals(sketchy.getUnfinishedMessage(), TestAllTypesLite.getDefaultInstance());
+  }
+
   public void testMergeFrom_sanity() throws Exception {
     TestAllTypesLite one = TestUtilLite.getAllLiteSetBuilder().build();
     byte[] bytes = one.toByteArray();

python/setup.py

@@ -279,8 +279,6 @@ if __name__ == '__main__':
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
         ],
       namespace_packages=['google'],
       packages=find_packages(

src/google/protobuf/any.pb.cc

@@ -68,10 +68,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2fany_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2fany_2eproto, file_level_enum_descriptors_google_2fprotobuf_2fany_2eproto, file_level_service_descriptors_google_2fprotobuf_2fany_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2fany_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2fany_2eproto);
-  return descriptor_table_google_2fprotobuf_2fany_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2fany_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2fany_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -323,10 +321,11 @@ void Any::InternalSwap(Any* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Any::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fany_2eproto_getter, &descriptor_table_google_2fprotobuf_2fany_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fany_2eproto[0]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/any.pb.h

@@ -53,7 +53,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2fany_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2fany_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2fany_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class Any;
 struct AnyDefaultTypeInternal;
@@ -96,10 +95,10 @@ class PROTOBUF_EXPORT Any PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Any& default_instance() {
     return *internal_default_instance();
@@ -200,12 +199,6 @@ class PROTOBUF_EXPORT Any PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fany_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -218,10 +211,8 @@ class PROTOBUF_EXPORT Any PROTOBUF_FINAL :
   // string type_url = 1;
   void clear_type_url();
   const std::string& type_url() const;
-  void set_type_url(const std::string& value);
-  void set_type_url(std::string&& value);
-  void set_type_url(const char* value);
-  void set_type_url(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_type_url(ArgT0&& arg0, ArgT... args);
   std::string* mutable_type_url();
   std::string* release_type_url();
   void set_allocated_type_url(std::string* type_url);
@@ -234,10 +225,8 @@ class PROTOBUF_EXPORT Any PROTOBUF_FINAL :
   // bytes value = 2;
   void clear_value();
   const std::string& value() const;
-  void set_value(const std::string& value);
-  void set_value(std::string&& value);
-  void set_value(const char* value);
-  void set_value(const void* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_value(ArgT0&& arg0, ArgT... args);
   std::string* mutable_value();
   std::string* release_value();
   void set_allocated_value(std::string* value);
@@ -279,8 +268,11 @@ inline const std::string& Any::type_url() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Any.type_url)
   return _internal_type_url();
 }
-inline void Any::set_type_url(const std::string& value) {
-  _internal_set_type_url(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Any::set_type_url(ArgT0&& arg0, ArgT... args) {
+ 
+ type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Any.type_url)
 }
 inline std::string* Any::mutable_type_url() {
@@ -294,25 +286,6 @@ inline void Any::_internal_set_type_url(const std::string& value) {
   
   type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Any::set_type_url(std::string&& value) {
-  
-  type_url_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Any.type_url)
-}
-inline void Any::set_type_url(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Any.type_url)
-}
-inline void Any::set_type_url(const char* value,
-    size_t size) {
-  
-  type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Any.type_url)
-}
 inline std::string* Any::_internal_mutable_type_url() {
   
   return type_url_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -340,8 +313,11 @@ inline const std::string& Any::value() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Any.value)
   return _internal_value();
 }
-inline void Any::set_value(const std::string& value) {
-  _internal_set_value(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Any::set_value(ArgT0&& arg0, ArgT... args) {
+ 
+ value_.SetBytes(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Any.value)
 }
 inline std::string* Any::mutable_value() {
@@ -355,25 +331,6 @@ inline void Any::_internal_set_value(const std::string& value) {
   
   value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Any::set_value(std::string&& value) {
-  
-  value_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Any.value)
-}
-inline void Any::set_value(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Any.value)
-}
-inline void Any::set_value(const void* value,
-    size_t size) {
-  
-  value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Any.value)
-}
 inline std::string* Any::_internal_mutable_value() {
   
   return value_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());

src/google/protobuf/api.pb.cc

@@ -150,10 +150,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2fapi_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2fapi_2eproto, file_level_enum_descriptors_google_2fprotobuf_2fapi_2eproto, file_level_service_descriptors_google_2fprotobuf_2fapi_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2fapi_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2fapi_2eproto);
-  return descriptor_table_google_2fprotobuf_2fapi_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2fapi_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2fapi_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -575,10 +573,11 @@ void Api::InternalSwap(Api* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Api::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fapi_2eproto_getter, &descriptor_table_google_2fprotobuf_2fapi_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fapi_2eproto[0]);
 }
 
-
 // ===================================================================
 
 class Method::_Internal {
@@ -968,10 +967,11 @@ void Method::InternalSwap(Method* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Method::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fapi_2eproto_getter, &descriptor_table_google_2fprotobuf_2fapi_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fapi_2eproto[1]);
 }
 
-
 // ===================================================================
 
 class Mixin::_Internal {
@@ -1206,10 +1206,11 @@ void Mixin::InternalSwap(Mixin* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Mixin::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fapi_2eproto_getter, &descriptor_table_google_2fprotobuf_2fapi_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fapi_2eproto[2]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/api.pb.h

@@ -55,7 +55,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2fapi_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2fapi_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2fapi_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class Api;
 struct ApiDefaultTypeInternal;
@@ -106,10 +105,10 @@ class PROTOBUF_EXPORT Api PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Api& default_instance() {
     return *internal_default_instance();
@@ -177,12 +176,6 @@ class PROTOBUF_EXPORT Api PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fapi_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -254,10 +247,8 @@ class PROTOBUF_EXPORT Api PROTOBUF_FINAL :
   // string name = 1;
   void clear_name();
   const std::string& name() const;
-  void set_name(const std::string& value);
-  void set_name(std::string&& value);
-  void set_name(const char* value);
-  void set_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_name();
   std::string* release_name();
   void set_allocated_name(std::string* name);
@@ -270,10 +261,8 @@ class PROTOBUF_EXPORT Api PROTOBUF_FINAL :
   // string version = 4;
   void clear_version();
   const std::string& version() const;
-  void set_version(const std::string& value);
-  void set_version(std::string&& value);
-  void set_version(const char* value);
-  void set_version(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_version(ArgT0&& arg0, ArgT... args);
   std::string* mutable_version();
   std::string* release_version();
   void set_allocated_version(std::string* version);
@@ -359,10 +348,10 @@ class PROTOBUF_EXPORT Method PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Method& default_instance() {
     return *internal_default_instance();
@@ -430,12 +419,6 @@ class PROTOBUF_EXPORT Method PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fapi_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -471,10 +454,8 @@ class PROTOBUF_EXPORT Method PROTOBUF_FINAL :
   // string name = 1;
   void clear_name();
   const std::string& name() const;
-  void set_name(const std::string& value);
-  void set_name(std::string&& value);
-  void set_name(const char* value);
-  void set_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_name();
   std::string* release_name();
   void set_allocated_name(std::string* name);
@@ -487,10 +468,8 @@ class PROTOBUF_EXPORT Method PROTOBUF_FINAL :
   // string request_type_url = 2;
   void clear_request_type_url();
   const std::string& request_type_url() const;
-  void set_request_type_url(const std::string& value);
-  void set_request_type_url(std::string&& value);
-  void set_request_type_url(const char* value);
-  void set_request_type_url(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_request_type_url(ArgT0&& arg0, ArgT... args);
   std::string* mutable_request_type_url();
   std::string* release_request_type_url();
   void set_allocated_request_type_url(std::string* request_type_url);
@@ -503,10 +482,8 @@ class PROTOBUF_EXPORT Method PROTOBUF_FINAL :
   // string response_type_url = 4;
   void clear_response_type_url();
   const std::string& response_type_url() const;
-  void set_response_type_url(const std::string& value);
-  void set_response_type_url(std::string&& value);
-  void set_response_type_url(const char* value);
-  void set_response_type_url(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_response_type_url(ArgT0&& arg0, ArgT... args);
   std::string* mutable_response_type_url();
   std::string* release_response_type_url();
   void set_allocated_response_type_url(std::string* response_type_url);
@@ -592,10 +569,10 @@ class PROTOBUF_EXPORT Mixin PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Mixin& default_instance() {
     return *internal_default_instance();
@@ -663,12 +640,6 @@ class PROTOBUF_EXPORT Mixin PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fapi_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -681,10 +652,8 @@ class PROTOBUF_EXPORT Mixin PROTOBUF_FINAL :
   // string name = 1;
   void clear_name();
   const std::string& name() const;
-  void set_name(const std::string& value);
-  void set_name(std::string&& value);
-  void set_name(const char* value);
-  void set_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_name();
   std::string* release_name();
   void set_allocated_name(std::string* name);
@@ -697,10 +666,8 @@ class PROTOBUF_EXPORT Mixin PROTOBUF_FINAL :
   // string root = 2;
   void clear_root();
   const std::string& root() const;
-  void set_root(const std::string& value);
-  void set_root(std::string&& value);
-  void set_root(const char* value);
-  void set_root(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_root(ArgT0&& arg0, ArgT... args);
   std::string* mutable_root();
   std::string* release_root();
   void set_allocated_root(std::string* root);
@@ -741,8 +708,11 @@ inline const std::string& Api::name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Api.name)
   return _internal_name();
 }
-inline void Api::set_name(const std::string& value) {
-  _internal_set_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Api::set_name(ArgT0&& arg0, ArgT... args) {
+ 
+ name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Api.name)
 }
 inline std::string* Api::mutable_name() {
@@ -756,25 +726,6 @@ inline void Api::_internal_set_name(const std::string& value) {
   
   name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Api::set_name(std::string&& value) {
-  
-  name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Api.name)
-}
-inline void Api::set_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Api.name)
-}
-inline void Api::set_name(const char* value,
-    size_t size) {
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Api.name)
-}
 inline std::string* Api::_internal_mutable_name() {
   
   return name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -877,8 +828,11 @@ inline const std::string& Api::version() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Api.version)
   return _internal_version();
 }
-inline void Api::set_version(const std::string& value) {
-  _internal_set_version(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Api::set_version(ArgT0&& arg0, ArgT... args) {
+ 
+ version_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Api.version)
 }
 inline std::string* Api::mutable_version() {
@@ -892,25 +846,6 @@ inline void Api::_internal_set_version(const std::string& value) {
   
   version_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Api::set_version(std::string&& value) {
-  
-  version_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Api.version)
-}
-inline void Api::set_version(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  version_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Api.version)
-}
-inline void Api::set_version(const char* value,
-    size_t size) {
-  
-  version_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Api.version)
-}
 inline std::string* Api::_internal_mutable_version() {
   
   return version_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1078,8 +1013,11 @@ inline const std::string& Method::name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Method.name)
   return _internal_name();
 }
-inline void Method::set_name(const std::string& value) {
-  _internal_set_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Method::set_name(ArgT0&& arg0, ArgT... args) {
+ 
+ name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Method.name)
 }
 inline std::string* Method::mutable_name() {
@@ -1093,25 +1031,6 @@ inline void Method::_internal_set_name(const std::string& value) {
   
   name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Method::set_name(std::string&& value) {
-  
-  name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Method.name)
-}
-inline void Method::set_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Method.name)
-}
-inline void Method::set_name(const char* value,
-    size_t size) {
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Method.name)
-}
 inline std::string* Method::_internal_mutable_name() {
   
   return name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1139,8 +1058,11 @@ inline const std::string& Method::request_type_url() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Method.request_type_url)
   return _internal_request_type_url();
 }
-inline void Method::set_request_type_url(const std::string& value) {
-  _internal_set_request_type_url(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Method::set_request_type_url(ArgT0&& arg0, ArgT... args) {
+ 
+ request_type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Method.request_type_url)
 }
 inline std::string* Method::mutable_request_type_url() {
@@ -1154,25 +1076,6 @@ inline void Method::_internal_set_request_type_url(const std::string& value) {
   
   request_type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Method::set_request_type_url(std::string&& value) {
-  
-  request_type_url_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Method.request_type_url)
-}
-inline void Method::set_request_type_url(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  request_type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Method.request_type_url)
-}
-inline void Method::set_request_type_url(const char* value,
-    size_t size) {
-  
-  request_type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Method.request_type_url)
-}
 inline std::string* Method::_internal_mutable_request_type_url() {
   
   return request_type_url_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1220,8 +1123,11 @@ inline const std::string& Method::response_type_url() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Method.response_type_url)
   return _internal_response_type_url();
 }
-inline void Method::set_response_type_url(const std::string& value) {
-  _internal_set_response_type_url(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Method::set_response_type_url(ArgT0&& arg0, ArgT... args) {
+ 
+ response_type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Method.response_type_url)
 }
 inline std::string* Method::mutable_response_type_url() {
@@ -1235,25 +1141,6 @@ inline void Method::_internal_set_response_type_url(const std::string& value) {
   
   response_type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Method::set_response_type_url(std::string&& value) {
-  
-  response_type_url_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Method.response_type_url)
-}
-inline void Method::set_response_type_url(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  response_type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Method.response_type_url)
-}
-inline void Method::set_response_type_url(const char* value,
-    size_t size) {
-  
-  response_type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Method.response_type_url)
-}
 inline std::string* Method::_internal_mutable_response_type_url() {
   
   return response_type_url_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1361,8 +1248,11 @@ inline const std::string& Mixin::name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Mixin.name)
   return _internal_name();
 }
-inline void Mixin::set_name(const std::string& value) {
-  _internal_set_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Mixin::set_name(ArgT0&& arg0, ArgT... args) {
+ 
+ name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Mixin.name)
 }
 inline std::string* Mixin::mutable_name() {
@@ -1376,25 +1266,6 @@ inline void Mixin::_internal_set_name(const std::string& value) {
   
   name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Mixin::set_name(std::string&& value) {
-  
-  name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Mixin.name)
-}
-inline void Mixin::set_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Mixin.name)
-}
-inline void Mixin::set_name(const char* value,
-    size_t size) {
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Mixin.name)
-}
 inline std::string* Mixin::_internal_mutable_name() {
   
   return name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1422,8 +1293,11 @@ inline const std::string& Mixin::root() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Mixin.root)
   return _internal_root();
 }
-inline void Mixin::set_root(const std::string& value) {
-  _internal_set_root(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Mixin::set_root(ArgT0&& arg0, ArgT... args) {
+ 
+ root_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Mixin.root)
 }
 inline std::string* Mixin::mutable_root() {
@@ -1437,25 +1311,6 @@ inline void Mixin::_internal_set_root(const std::string& value) {
   
   root_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Mixin::set_root(std::string&& value) {
-  
-  root_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Mixin.root)
-}
-inline void Mixin::set_root(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  root_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Mixin.root)
-}
-inline void Mixin::set_root(const char* value,
-    size_t size) {
-  
-  root_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Mixin.root)
-}
 inline std::string* Mixin::_internal_mutable_root() {
   
   return root_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());

src/google/protobuf/arenastring.h

@@ -193,6 +193,34 @@ struct PROTOBUF_EXPORT ArenaStringPtr {
   void Set(EmptyDefault, std::string&& value, ::google::protobuf::Arena* arena);
   void Set(NonEmptyDefault, ConstStringParam value, ::google::protobuf::Arena* arena);
   void Set(NonEmptyDefault, std::string&& value, ::google::protobuf::Arena* arena);
+  template <typename FirstParam>
+  void Set(FirstParam p1, const char* str, ::google::protobuf::Arena* arena) {
+    Set(p1, ConstStringParam(str), arena);
+  }
+  template <typename FirstParam>
+  void Set(FirstParam p1, const char* str, size_t size,
+           ::google::protobuf::Arena* arena) {
+    ConstStringParam sp{str, size};  // for string_view and `const string &`
+    Set(p1, sp, arena);
+  }
+  template <typename FirstParam, typename RefWrappedType>
+  void Set(FirstParam p1,
+           std::reference_wrapper<RefWrappedType> const_string_ref,
+           ::google::protobuf::Arena* arena) {
+    Set(p1, const_string_ref.get(), arena);
+  }
+
+  template <typename FirstParam, typename SecondParam>
+  void SetBytes(FirstParam p1, SecondParam&& p2, ::google::protobuf::Arena* arena) {
+    Set(p1, static_cast<SecondParam&&>(p2), arena);
+  }
+  template <typename FirstParam>
+  void SetBytes(FirstParam p1, const void* str, size_t size,
+                ::google::protobuf::Arena* arena) {
+    // must work whether ConstStringParam is string_view or `const string &`
+    ConstStringParam sp{static_cast<const char*>(str), size};
+    Set(p1, sp, arena);
+  }
 
   // Basic accessors.
   const std::string& Get() const PROTOBUF_NDEBUG_INLINE {

src/google/protobuf/compiler/command_line_interface.cc

@@ -1036,16 +1036,6 @@ int CommandLineInterface::Run(int argc, const char* const argv[]) {
   }
 
 
-  for (auto fd : parsed_files) {
-    if (!AllowProto3Optional(*fd) && ContainsProto3Optional(fd)) {
-      std::cerr << fd->name()
-                << ": This file contains proto3 optional fields, but "
-                   "--experimental_allow_proto3_optional was not set."
-                << std::endl;
-      return 1;
-    }
-  }
-
   // We construct a separate GeneratorContext for each output location.  Note
   // that two code generators may output to the same location, in which case
   // they should share a single GeneratorContext so that OpenForInsert() works.
@@ -1214,13 +1204,6 @@ PopulateSingleSimpleDescriptorDatabase(const std::string& descriptor_set_name) {
 
 }  // namespace
 
-bool CommandLineInterface::AllowProto3Optional(
-    const FileDescriptor& file) const {
-  // Proto3 optional is enabled by default now, the experimental flag is no
-  // longer required.
-  return true;
-}
-
 
 bool CommandLineInterface::VerifyInputFilesInDescriptors(
     DescriptorDatabase* database) {
@@ -1337,7 +1320,6 @@ void CommandLineInterface::Clear() {
   source_info_in_descriptor_set_ = false;
   disallow_services_ = false;
   direct_dependencies_explicitly_set_ = false;
-  allow_proto3_optional_ = false;
   deterministic_output_ = false;
 }
 
@@ -1857,8 +1839,7 @@ CommandLineInterface::InterpretArgument(const std::string& name,
 
 
   } else if (name == "--experimental_allow_proto3_optional") {
-    allow_proto3_optional_ = true;
-
+    // Flag is no longer observed, but we allow it for backward compat.
   } else if (name == "--encode" || name == "--decode" ||
              name == "--decode_raw") {
     if (mode_ != MODE_COMPILE) {

src/google/protobuf/compiler/command_line_interface.h

@@ -226,11 +226,6 @@ class PROTOC_EXPORT CommandLineInterface {
   bool MakeInputsBeProtoPathRelative(DiskSourceTree* source_tree,
                                      DescriptorDatabase* fallback_database);
 
-  // Is this .proto file whitelisted, or do we have a command-line flag allowing
-  // us to use proto3 optional? This is a temporary control to avoid people from
-  // using proto3 optional until code generators have implemented it.
-  bool AllowProto3Optional(const FileDescriptor& file) const;
-
   // Fails if these files use proto3 optional and the code generator doesn't
   // support it. This is a permanent check.
   bool EnforceProto3OptionalSupport(
@@ -448,9 +443,6 @@ class PROTOC_EXPORT CommandLineInterface {
   // Was the --disallow_services flag used?
   bool disallow_services_ = false;
 
-  // Was the --experimental_allow_proto3_optional flag used?
-  bool allow_proto3_optional_ = false;
-
   // When using --encode, this will be passed to SetSerializationDeterministic.
   bool deterministic_output_ = false;
 

src/google/protobuf/compiler/command_line_interface_unittest.cc

@@ -2378,7 +2378,6 @@ TEST_F(CommandLineInterfaceTest, MissingValueAtEndError) {
   ExpectErrorText("Missing value for flag: --test_out\n");
 }
 
-
 TEST_F(CommandLineInterfaceTest, Proto3OptionalDisallowedNoCodegenSupport) {
   CreateTempFile("google/foo.proto",
                  "syntax = \"proto3\";\n"

src/google/protobuf/compiler/cpp/cpp_file.cc

@@ -694,10 +694,6 @@ void FileGenerator::GenerateReflectionInitializationCode(io::Printer* printer) {
   if (!message_generators_.empty()) {
     format("static ::$proto_ns$::Metadata $file_level_metadata$[$1$];\n",
            message_generators_.size());
-  } else {
-    format(
-        "static "
-        "constexpr ::$proto_ns$::Metadata* $file_level_metadata$ = nullptr;\n");
   }
   if (!enum_generators_.empty()) {
     format(
@@ -855,24 +851,30 @@ void FileGenerator::GenerateReflectionInitializationCode(io::Printer* printer) {
       "  false, $1$, $2$, $3$, \"$filename$\", \n"
       "  &$desc_table$_once, $4$, $5$, $6$,\n"
       "  schemas, file_default_instances, $tablename$::offsets,\n"
-      "  $file_level_metadata$, $file_level_enum_descriptors$, "
+      "  $7$, $file_level_enum_descriptors$, "
       "$file_level_service_descriptors$,\n"
       "};\n"
       // This function exists to be marked as weak.
-      // It can significantly speed up compilation by breaking up the SCC.
+      // It can significantly speed up compilation by breaking up LLVM's SCC in
+      // the .pb.cc tranlation units. Large translation units see a reduction of
+      // more than 35% of walltime for optimized builds.
       // Without the weak attribute all the messages in the file, including all
-      // the vtables and everything they use become part of the same SCC.
+      // the vtables and everything they use become part of the same SCC through
+      // a cycle like:
+      // GetMetadata -> descriptor table -> default instances ->
+      //   vtables -> GetMetadata
       // By adding a weak function here we break the connection from the
       // individual vtables back into the descriptor table.
-      "PROTOBUF_ATTRIBUTE_WEAK ::$proto_ns$::Metadata\n"
-      "$desc_table$_metadata_getter(int index) {\n"
-      "  ::$proto_ns$::internal::AssignDescriptors(&$desc_table$);\n"
-      "  return $desc_table$.file_level_metadata[index];\n"
+      "PROTOBUF_ATTRIBUTE_WEAK const ::$proto_ns$::internal::DescriptorTable* "
+      "$desc_table$_getter() {\n"
+      "  return &$desc_table$;\n"
       "}\n"
       "\n",
       eager ? "true" : "false", file_data.size(), protodef_name,
       num_deps == 0 ? "nullptr" : variables_["desc_table"] + "_deps", num_deps,
-      message_generators_.size());
+      message_generators_.size(),
+      message_generators_.empty() ? "nullptr"
+                                  : variables_["file_level_metadata"]);
 
   // For descriptor.proto we want to avoid doing any dynamic initialization,
   // because in some situations that would otherwise pull in a lot of
@@ -1288,9 +1290,7 @@ void FileGenerator::GenerateGlobalStateFunctionDeclarations(
   if (HasDescriptorMethods(file_, options_)) {
     format(
         "extern $dllexport_decl $const ::$proto_ns$::internal::DescriptorTable "
-        "$desc_table$;\n"
-        "$dllexport_decl $::$proto_ns$::Metadata "
-        "$desc_table$_metadata_getter(int index);\n");
+        "$desc_table$;\n");
   }
 }
 

src/google/protobuf/compiler/cpp/cpp_message.cc

@@ -1076,19 +1076,9 @@ void MessageGenerator::GenerateClassDefinition(io::Printer* printer) {
     if (HasDescriptorMethods(descriptor_->file(), options_)) {
       format(
           "  void MergeFrom(const ::$proto_ns$::Message& other) final;\n"
-          "  ::$proto_ns$::Metadata GetMetadata() const final;\n"
-          "  private:\n"
-          "  static ::$proto_ns$::Metadata GetMetadataStatic() {\n"
-          "    ::$proto_ns$::internal::AssignDescriptors(&::$desc_table$);\n"
-          "    return ::$desc_table$.file_level_metadata[$1$];\n"
-          "  }\n"
-          "\n"
-          "  public:\n"
-          "};\n",
-          index_in_file_messages_);
-    } else {
-      format("};\n");
+          "  ::$proto_ns$::Metadata GetMetadata() const final;\n");
     }
+    format("};\n");
     return;
   }
 
@@ -1168,10 +1158,10 @@ void MessageGenerator::GenerateClassDefinition(io::Printer* printer) {
     // separately.
     format(
         "static const ::$proto_ns$::Descriptor* GetDescriptor() {\n"
-        "  return GetMetadataStatic().descriptor;\n"
+        "  return default_instance().GetMetadata().descriptor;\n"
         "}\n"
         "static const ::$proto_ns$::Reflection* GetReflection() {\n"
-        "  return GetMetadataStatic().reflection;\n"
+        "  return default_instance().GetMetadata().reflection;\n"
         "}\n");
   }
 
@@ -1380,12 +1370,6 @@ void MessageGenerator::GenerateClassDefinition(io::Printer* printer) {
   if (HasDescriptorMethods(descriptor_->file(), options_)) {
     format(
         "::$proto_ns$::Metadata GetMetadata() const final;\n"
-        "private:\n"
-        "static ::$proto_ns$::Metadata GetMetadataStatic() {\n"
-        "  return ::$desc_table$_metadata_getter(kIndexInFileMessages);\n"
-        "}\n"
-        "\n"
-        "public:\n"
         "\n");
   } else {
     format(
@@ -1889,8 +1873,11 @@ void MessageGenerator::GenerateClassMethods(io::Printer* printer) {
     if (HasDescriptorMethods(descriptor_->file(), options_)) {
       format(
           "::$proto_ns$::Metadata $classname$::GetMetadata() const {\n"
-          "  return GetMetadataStatic();\n"
-          "}\n");
+          "  return ::$proto_ns$::internal::AssignDescriptors(\n"
+          "      &$desc_table$_getter, &$desc_table$_once,\n"
+          "      $file_level_metadata$[$1$]);\n"
+          "}\n",
+          index_in_file_messages_);
       format(
           "void $classname$::MergeFrom(\n"
           "    const ::$proto_ns$::Message& other) {\n"
@@ -2029,9 +2016,11 @@ void MessageGenerator::GenerateClassMethods(io::Printer* printer) {
   if (HasDescriptorMethods(descriptor_->file(), options_)) {
     format(
         "::$proto_ns$::Metadata $classname$::GetMetadata() const {\n"
-        "  return GetMetadataStatic();\n"
-        "}\n"
-        "\n");
+        "  return ::$proto_ns$::internal::AssignDescriptors(\n"
+        "      &$desc_table$_getter, &$desc_table$_once,\n"
+        "      $file_level_metadata$[$1$]);\n"
+        "}\n",
+        index_in_file_messages_);
   } else {
     format(
         "std::string $classname$::GetTypeName() const {\n"

src/google/protobuf/compiler/cpp/cpp_plugin_unittest.cc

@@ -80,13 +80,9 @@ class TestGenerator : public CodeGenerator {
     // Check field accessors for a required string:
     TryInsert("test.pb.h", "field_get:foo.Bar.requiredString", context);
     TryInsert("test.pb.h", "field_set:foo.Bar.requiredString", context);
-    TryInsert("test.pb.h", "field_set_char:foo.Bar.requiredString", context);
-    TryInsert("test.pb.h", "field_set_pointer:foo.Bar.requiredString", context);
     TryInsert("test.pb.h", "field_mutable:foo.Bar.requiredString", context);
     TryInsert("test.pb.h", "field_set_allocated:foo.Bar.requiredString",
               context);
-    TryInsert("test.pb.h", "field_set_char:foo.Bar.requiredString", context);
-    TryInsert("test.pb.h", "field_set_pointer:foo.Bar.requiredString", context);
 
     // Check field accessors for a repeated string:
     TryInsert("test.pb.h", "field_get:foo.Bar.repeatedString", context);
@@ -104,12 +100,8 @@ class TestGenerator : public CodeGenerator {
     // Check field accessors for a string inside oneof{}:
     TryInsert("test.pb.h", "field_get:foo.Bar.oneOfString", context);
     TryInsert("test.pb.h", "field_set:foo.Bar.oneOfString", context);
-    TryInsert("test.pb.h", "field_set_char:foo.Bar.oneOfString", context);
-    TryInsert("test.pb.h", "field_set_pointer:foo.Bar.oneOfString", context);
     TryInsert("test.pb.h", "field_mutable:foo.Bar.oneOfString", context);
     TryInsert("test.pb.h", "field_set_allocated:foo.Bar.oneOfString", context);
-    TryInsert("test.pb.h", "field_set_char:foo.Bar.oneOfString", context);
-    TryInsert("test.pb.h", "field_set_pointer:foo.Bar.oneOfString", context);
 
     // Check field accessors for an optional message:
     TryInsert("test.pb.h", "field_get:foo.Bar.optMessage", context);

src/google/protobuf/compiler/cpp/cpp_string_field.cc

@@ -82,6 +82,8 @@ void SetStringVariables(const FieldDescriptor* descriptor,
                        : "lazy_variable"];
   (*variables)["pointer_type"] =
       descriptor->type() == FieldDescriptor::TYPE_BYTES ? "void" : "char";
+  (*variables)["setter"] =
+      descriptor->type() == FieldDescriptor::TYPE_BYTES ? "SetBytes" : "Set";
   (*variables)["null_check"] = (*variables)["DCHK"] + "(value != nullptr);\n";
   // NOTE: Escaped here to unblock proto1->proto2 migration.
   // TODO(liujisi): Extend this to apply for other conflicting methods.
@@ -155,19 +157,10 @@ void StringFieldGenerator::GenerateAccessorDeclarations(
 
   format(
       "$deprecated_attr$const std::string& ${1$$name$$}$() const;\n"
-      "$deprecated_attr$void ${1$set_$name$$}$(const std::string& value);\n"
-      "$deprecated_attr$void ${1$set_$name$$}$(std::string&& value);\n"
-      "$deprecated_attr$void ${1$set_$name$$}$(const char* value);\n",
+      "template <typename ArgT0 = const std::string&, typename... ArgT>\n"
+      "$deprecated_attr$void ${1$set_$name$$}$(ArgT0&& arg0, ArgT... args);\n",
       descriptor_);
-  if (!options_.opensource_runtime) {
-    format(
-        "$deprecated_attr$void ${1$set_$name$$}$(::StringPiece value);\n",
-        descriptor_);
-  }
   format(
-      "$deprecated_attr$void ${1$set_$name$$}$(const $pointer_type$* "
-      "value, size_t size)"
-      ";\n"
       "$deprecated_attr$std::string* ${1$mutable_$name$$}$();\n"
       "$deprecated_attr$std::string* ${1$$release_name$$}$();\n"
       "$deprecated_attr$void ${1$set_allocated_$name$$}$(std::string* "
@@ -202,9 +195,13 @@ void StringFieldGenerator::GenerateInlineAccessorDefinitions(
   format(
       "  return _internal_$name$();\n"
       "}\n"
-      "inline void $classname$::set_$name$(const std::string& value) {\n"
+      "template <typename ArgT0, typename... ArgT>\n"
+      "PROTOBUF_ALWAYS_INLINE\n"
+      "inline void $classname$::set_$name$(ArgT0&& arg0, ArgT... args) {\n"
       "$annotate_accessor$"
-      "  _internal_set_$name$(value);\n"
+      " $set_hasbit$\n"
+      " $name$_.$setter$($default_value_tag$, static_cast<ArgT0 &&>(arg0),"
+      " args..., GetArena());\n"
       "  // @@protoc_insertion_point(field_set:$full_name$)\n"
       "}\n"
       "inline std::string* $classname$::mutable_$name$() {\n"
@@ -219,40 +216,8 @@ void StringFieldGenerator::GenerateInlineAccessorDefinitions(
       "value) {\n"
       "  $set_hasbit$\n"
       "  $name$_.Set($default_value_tag$, value, GetArena());\n"
-      "}\n"
-      "inline void $classname$::set_$name$(std::string&& value) {\n"
-      "$annotate_accessor$"
-      "  $set_hasbit$\n"
-      "  $name$_.Set(\n"
-      "    $default_value_tag$, ::std::move(value), GetArena());\n"
-      "  // @@protoc_insertion_point(field_set_rvalue:$full_name$)\n"
-      "}\n"
-      "inline void $classname$::set_$name$(const char* value) {\n"
-      "$annotate_accessor$"
-      "  $null_check$"
-      "  $set_hasbit$\n"
-      "  $name$_.Set($default_value_tag$, $string_piece$(value), GetArena());\n"
-      "  // @@protoc_insertion_point(field_set_char:$full_name$)\n"
       "}\n");
-  if (!options_.opensource_runtime) {
-    format(
-        "inline void $classname$::set_$name$(::StringPiece value) {\n"
-        "$annotate_accessor$"
-        "  $set_hasbit$\n"
-        "  $name$_.Set($default_value_tag$, value,GetArena());\n"
-        "  // @@protoc_insertion_point(field_set_string_piece:$full_name$)\n"
-        "}\n");
-  }
   format(
-      "inline "
-      "void $classname$::set_$name$(const $pointer_type$* value,\n"
-      "    size_t size) {\n"
-      "$annotate_accessor$"
-      "  $set_hasbit$\n"
-      "  $name$_.Set($default_value_tag$, $string_piece$(\n"
-      "      reinterpret_cast<const char*>(value), size), GetArena());\n"
-      "  // @@protoc_insertion_point(field_set_pointer:$full_name$)\n"
-      "}\n"
       "inline std::string* $classname$::_internal_mutable_$name$() {\n"
       "  $set_hasbit$\n"
       "  return $name$_.Mutable($default_variable_or_tag$, GetArena());\n"
@@ -431,9 +396,16 @@ void StringOneofFieldGenerator::GenerateInlineAccessorDefinitions(
       "  // @@protoc_insertion_point(field_get:$full_name$)\n"
       "  return _internal_$name$();\n"
       "}\n"
-      "inline void $classname$::set_$name$(const std::string& value) {\n"
+      "template <typename ArgT0, typename... ArgT>\n"
+      "inline void $classname$::set_$name$(ArgT0&& arg0, ArgT... args) {\n"
       "$annotate_accessor$"
-      "  _internal_set_$name$(value);\n"
+      "  if (!_internal_has_$name$()) {\n"
+      "    clear_$oneof_name$();\n"
+      "    set_has_$name$();\n"
+      "    $field_member$.UnsafeSetDefault($init_value$);\n"
+      "  }\n"
+      "  $field_member$.$setter$($default_value_tag$,"
+      " static_cast<ArgT0 &&>(arg0), args..., GetArena());\n"
       "  // @@protoc_insertion_point(field_set:$full_name$)\n"
       "}\n"
       "inline std::string* $classname$::mutable_$name$() {\n"
@@ -455,60 +427,8 @@ void StringOneofFieldGenerator::GenerateInlineAccessorDefinitions(
       "    $field_member$.UnsafeSetDefault($init_value$);\n"
       "  }\n"
       "  $field_member$.Set($default_value_tag$, value, GetArena());\n"
-      "}\n"
-      "inline void $classname$::set_$name$(std::string&& value) {\n"
-      "$annotate_accessor$"
-      "  // @@protoc_insertion_point(field_set:$full_name$)\n"
-      "  if (!_internal_has_$name$()) {\n"
-      "    clear_$oneof_name$();\n"
-      "    set_has_$name$();\n"
-      "    $field_member$.UnsafeSetDefault($init_value$);\n"
-      "  }\n"
-      "  $field_member$.Set(\n"
-      "    $default_value_tag$, ::std::move(value), GetArena());\n"
-      "  // @@protoc_insertion_point(field_set_rvalue:$full_name$)\n"
-      "}\n"
-      "inline void $classname$::set_$name$(const char* value) {\n"
-      "$annotate_accessor$"
-      "  $null_check$"
-      "  if (!_internal_has_$name$()) {\n"
-      "    clear_$oneof_name$();\n"
-      "    set_has_$name$();\n"
-      "    $field_member$.UnsafeSetDefault($init_value$);\n"
-      "  }\n"
-      "  $field_member$.Set($default_value_tag$,\n"
-      "      $string_piece$(value), GetArena());\n"
-      "  // @@protoc_insertion_point(field_set_char:$full_name$)\n"
       "}\n");
-  if (!options_.opensource_runtime) {
-    format(
-        "inline void $classname$::set_$name$(::StringPiece value) {\n"
-        "$annotate_accessor$"
-        "  if (!_internal_has_$name$()) {\n"
-        "    clear_$oneof_name$();\n"
-        "    set_has_$name$();\n"
-        "    $field_member$.UnsafeSetDefault($init_value$);\n"
-        "  }\n"
-        "  $field_member$.Set($default_value_tag$, value, GetArena());\n"
-        "  // @@protoc_insertion_point(field_set_string_piece:$full_name$)\n"
-        "}\n");
-  }
   format(
-      "inline "
-      "void $classname$::set_$name$(const $pointer_type$* value,\n"
-      "                             size_t size) {\n"
-      "$annotate_accessor$"
-      "  if (!_internal_has_$name$()) {\n"
-      "    clear_$oneof_name$();\n"
-      "    set_has_$name$();\n"
-      "    $field_member$.UnsafeSetDefault($init_value$);\n"
-      "  }\n"
-      "  $field_member$.Set(\n"
-      "      $default_value_tag$, $string_piece$(\n"
-      "      reinterpret_cast<const char*>(value), size),\n"
-      "      GetArena());\n"
-      "  // @@protoc_insertion_point(field_set_pointer:$full_name$)\n"
-      "}\n"
       "inline std::string* $classname$::_internal_mutable_$name$() {\n"
       "  if (!_internal_has_$name$()) {\n"
       "    clear_$oneof_name$();\n"

src/google/protobuf/compiler/java/java_context.cc

@@ -108,6 +108,7 @@ void Context::InitializeFieldGeneratorInfoForMessage(
     InitializeFieldGeneratorInfoForMessage(message->nested_type(i));
   }
   std::vector<const FieldDescriptor*> fields;
+  fields.reserve(message->field_count());
   for (int i = 0; i < message->field_count(); ++i) {
     fields.push_back(message->field(i));
   }

src/google/protobuf/compiler/java/java_map_field_lite.cc

@@ -95,9 +95,13 @@ void SetMessageVariables(const FieldDescriptor* descriptor, int messageBitIndex,
   // We use `x.getClass()` as a null check because it generates less bytecode
   // than an `if (x == null) { throw ... }` statement.
   (*variables)["key_null_check"] =
-      IsReferenceType(keyJavaType) ? "key.getClass();" : "";
+      IsReferenceType(keyJavaType)
+          ? "java.lang.Class<?> keyClass = key.getClass();"
+          : "";
   (*variables)["value_null_check"] =
-      IsReferenceType(valueJavaType) ? "value.getClass();" : "";
+      IsReferenceType(valueJavaType)
+          ? "java.lang.Class<?> valueClass = value.getClass();"
+          : "";
 
   if (GetJavaType(value) == JAVATYPE_ENUM) {
     // We store enums as Integers internally.

src/google/protobuf/compiler/java/java_message.cc

@@ -571,6 +571,7 @@ void ImmutableMessageGenerator::GenerateMessageSerializationMethods(
       SortFieldsByNumber(descriptor_));
 
   std::vector<const Descriptor::ExtensionRange*> sorted_extensions;
+  sorted_extensions.reserve(descriptor_->extension_range_count());
   for (int i = 0; i < descriptor_->extension_range_count(); ++i) {
     sorted_extensions.push_back(descriptor_->extension_range(i));
   }

src/google/protobuf/compiler/java/java_primitive_field_lite.cc

@@ -127,7 +127,8 @@ void SetPrimitiveVariables(const FieldDescriptor* descriptor,
   if (IsReferenceType(javaType)) {
     // We use `x.getClass()` as a null check because it generates less bytecode
     // than an `if (x == null) { throw ... }` statement.
-    (*variables)["null_check"] = "  value.getClass();\n";
+    (*variables)["null_check"] =
+        "  java.lang.Class<?> valueClass = value.getClass();\n";
   } else {
     (*variables)["null_check"] = "";
   }

src/google/protobuf/compiler/java/java_string_field_lite.cc

@@ -77,7 +77,8 @@ void SetPrimitiveVariables(const FieldDescriptor* descriptor,
       WireFormat::TagSize(descriptor->number(), GetType(descriptor)));
   // We use `x.getClass()` as a null check because it generates less bytecode
   // than an `if (x == null) { throw ... }` statement.
-  (*variables)["null_check"] = "  value.getClass();\n";
+  (*variables)["null_check"] =
+      "  java.lang.Class<?> valueClass = value.getClass();\n";
 
   // TODO(birdo): Add @deprecated javadoc when generating javadoc is supported
   // by the proto compiler

src/google/protobuf/compiler/plugin.pb.cc

@@ -181,10 +181,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2fcompiler_2fplugin_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2fcompiler_2fplugin_2eproto, file_level_enum_descriptors_google_2fprotobuf_2fcompiler_2fplugin_2eproto, file_level_service_descriptors_google_2fprotobuf_2fcompiler_2fplugin_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto);
-  return descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -530,10 +528,11 @@ void Version::InternalSwap(Version* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Version::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_getter, &descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fcompiler_2fplugin_2eproto[0]);
 }
 
-
 // ===================================================================
 
 class CodeGeneratorRequest::_Internal {
@@ -873,10 +872,11 @@ void CodeGeneratorRequest::InternalSwap(CodeGeneratorRequest* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata CodeGeneratorRequest::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_getter, &descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fcompiler_2fplugin_2eproto[1]);
 }
 
-
 // ===================================================================
 
 class CodeGeneratorResponse_File::_Internal {
@@ -1235,10 +1235,11 @@ void CodeGeneratorResponse_File::InternalSwap(CodeGeneratorResponse_File* other)
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata CodeGeneratorResponse_File::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_getter, &descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fcompiler_2fplugin_2eproto[2]);
 }
 
-
 // ===================================================================
 
 class CodeGeneratorResponse::_Internal {
@@ -1520,10 +1521,11 @@ void CodeGeneratorResponse::InternalSwap(CodeGeneratorResponse* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata CodeGeneratorResponse::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_getter, &descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fcompiler_2fplugin_2eproto[3]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 }  // namespace compiler
 PROTOBUF_NAMESPACE_CLOSE

src/google/protobuf/compiler/plugin.pb.h

@@ -61,7 +61,6 @@ struct PROTOC_EXPORT TableStruct_google_2fprotobuf_2fcompiler_2fplugin_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOC_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto;
-PROTOC_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 namespace compiler {
 class CodeGeneratorRequest;
@@ -149,10 +148,10 @@ class PROTOC_EXPORT Version PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Version& default_instance() {
     return *internal_default_instance();
@@ -220,12 +219,6 @@ class PROTOC_EXPORT Version PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -244,10 +237,8 @@ class PROTOC_EXPORT Version PROTOBUF_FINAL :
   public:
   void clear_suffix();
   const std::string& suffix() const;
-  void set_suffix(const std::string& value);
-  void set_suffix(std::string&& value);
-  void set_suffix(const char* value);
-  void set_suffix(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_suffix(ArgT0&& arg0, ArgT... args);
   std::string* mutable_suffix();
   std::string* release_suffix();
   void set_allocated_suffix(std::string* suffix);
@@ -350,10 +341,10 @@ class PROTOC_EXPORT CodeGeneratorRequest PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const CodeGeneratorRequest& default_instance() {
     return *internal_default_instance();
@@ -421,12 +412,6 @@ class PROTOC_EXPORT CodeGeneratorRequest PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -487,10 +472,8 @@ class PROTOC_EXPORT CodeGeneratorRequest PROTOBUF_FINAL :
   public:
   void clear_parameter();
   const std::string& parameter() const;
-  void set_parameter(const std::string& value);
-  void set_parameter(std::string&& value);
-  void set_parameter(const char* value);
-  void set_parameter(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_parameter(ArgT0&& arg0, ArgT... args);
   std::string* mutable_parameter();
   std::string* release_parameter();
   void set_allocated_parameter(std::string* parameter);
@@ -572,10 +555,10 @@ class PROTOC_EXPORT CodeGeneratorResponse_File PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const CodeGeneratorResponse_File& default_instance() {
     return *internal_default_instance();
@@ -643,12 +626,6 @@ class PROTOC_EXPORT CodeGeneratorResponse_File PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -667,10 +644,8 @@ class PROTOC_EXPORT CodeGeneratorResponse_File PROTOBUF_FINAL :
   public:
   void clear_name();
   const std::string& name() const;
-  void set_name(const std::string& value);
-  void set_name(std::string&& value);
-  void set_name(const char* value);
-  void set_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_name();
   std::string* release_name();
   void set_allocated_name(std::string* name);
@@ -687,10 +662,8 @@ class PROTOC_EXPORT CodeGeneratorResponse_File PROTOBUF_FINAL :
   public:
   void clear_insertion_point();
   const std::string& insertion_point() const;
-  void set_insertion_point(const std::string& value);
-  void set_insertion_point(std::string&& value);
-  void set_insertion_point(const char* value);
-  void set_insertion_point(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_insertion_point(ArgT0&& arg0, ArgT... args);
   std::string* mutable_insertion_point();
   std::string* release_insertion_point();
   void set_allocated_insertion_point(std::string* insertion_point);
@@ -707,10 +680,8 @@ class PROTOC_EXPORT CodeGeneratorResponse_File PROTOBUF_FINAL :
   public:
   void clear_content();
   const std::string& content() const;
-  void set_content(const std::string& value);
-  void set_content(std::string&& value);
-  void set_content(const char* value);
-  void set_content(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_content(ArgT0&& arg0, ArgT... args);
   std::string* mutable_content();
   std::string* release_content();
   void set_allocated_content(std::string* content);
@@ -792,10 +763,10 @@ class PROTOC_EXPORT CodeGeneratorResponse PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const CodeGeneratorResponse& default_instance() {
     return *internal_default_instance();
@@ -863,12 +834,6 @@ class PROTOC_EXPORT CodeGeneratorResponse PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fcompiler_2fplugin_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -936,10 +901,8 @@ class PROTOC_EXPORT CodeGeneratorResponse PROTOBUF_FINAL :
   public:
   void clear_error();
   const std::string& error() const;
-  void set_error(const std::string& value);
-  void set_error(std::string&& value);
-  void set_error(const char* value);
-  void set_error(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_error(ArgT0&& arg0, ArgT... args);
   std::string* mutable_error();
   std::string* release_error();
   void set_allocated_error(std::string* error);
@@ -1087,8 +1050,11 @@ inline const std::string& Version::suffix() const {
   // @@protoc_insertion_point(field_get:google.protobuf.compiler.Version.suffix)
   return _internal_suffix();
 }
-inline void Version::set_suffix(const std::string& value) {
-  _internal_set_suffix(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Version::set_suffix(ArgT0&& arg0, ArgT... args) {
+ _has_bits_[0] |= 0x00000001u;
+ suffix_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.compiler.Version.suffix)
 }
 inline std::string* Version::mutable_suffix() {
@@ -1102,25 +1068,6 @@ inline void Version::_internal_set_suffix(const std::string& value) {
   _has_bits_[0] |= 0x00000001u;
   suffix_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Version::set_suffix(std::string&& value) {
-  _has_bits_[0] |= 0x00000001u;
-  suffix_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.compiler.Version.suffix)
-}
-inline void Version::set_suffix(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  _has_bits_[0] |= 0x00000001u;
-  suffix_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.compiler.Version.suffix)
-}
-inline void Version::set_suffix(const char* value,
-    size_t size) {
-  _has_bits_[0] |= 0x00000001u;
-  suffix_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.compiler.Version.suffix)
-}
 inline std::string* Version::_internal_mutable_suffix() {
   _has_bits_[0] |= 0x00000001u;
   return suffix_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1238,8 +1185,11 @@ inline const std::string& CodeGeneratorRequest::parameter() const {
   // @@protoc_insertion_point(field_get:google.protobuf.compiler.CodeGeneratorRequest.parameter)
   return _internal_parameter();
 }
-inline void CodeGeneratorRequest::set_parameter(const std::string& value) {
-  _internal_set_parameter(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void CodeGeneratorRequest::set_parameter(ArgT0&& arg0, ArgT... args) {
+ _has_bits_[0] |= 0x00000001u;
+ parameter_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.compiler.CodeGeneratorRequest.parameter)
 }
 inline std::string* CodeGeneratorRequest::mutable_parameter() {
@@ -1253,25 +1203,6 @@ inline void CodeGeneratorRequest::_internal_set_parameter(const std::string& val
   _has_bits_[0] |= 0x00000001u;
   parameter_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void CodeGeneratorRequest::set_parameter(std::string&& value) {
-  _has_bits_[0] |= 0x00000001u;
-  parameter_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.compiler.CodeGeneratorRequest.parameter)
-}
-inline void CodeGeneratorRequest::set_parameter(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  _has_bits_[0] |= 0x00000001u;
-  parameter_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.compiler.CodeGeneratorRequest.parameter)
-}
-inline void CodeGeneratorRequest::set_parameter(const char* value,
-    size_t size) {
-  _has_bits_[0] |= 0x00000001u;
-  parameter_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.compiler.CodeGeneratorRequest.parameter)
-}
 inline std::string* CodeGeneratorRequest::_internal_mutable_parameter() {
   _has_bits_[0] |= 0x00000001u;
   return parameter_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1434,8 +1365,11 @@ inline const std::string& CodeGeneratorResponse_File::name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.compiler.CodeGeneratorResponse.File.name)
   return _internal_name();
 }
-inline void CodeGeneratorResponse_File::set_name(const std::string& value) {
-  _internal_set_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void CodeGeneratorResponse_File::set_name(ArgT0&& arg0, ArgT... args) {
+ _has_bits_[0] |= 0x00000001u;
+ name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.compiler.CodeGeneratorResponse.File.name)
 }
 inline std::string* CodeGeneratorResponse_File::mutable_name() {
@@ -1449,25 +1383,6 @@ inline void CodeGeneratorResponse_File::_internal_set_name(const std::string& va
   _has_bits_[0] |= 0x00000001u;
   name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void CodeGeneratorResponse_File::set_name(std::string&& value) {
-  _has_bits_[0] |= 0x00000001u;
-  name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.compiler.CodeGeneratorResponse.File.name)
-}
-inline void CodeGeneratorResponse_File::set_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  _has_bits_[0] |= 0x00000001u;
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.compiler.CodeGeneratorResponse.File.name)
-}
-inline void CodeGeneratorResponse_File::set_name(const char* value,
-    size_t size) {
-  _has_bits_[0] |= 0x00000001u;
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.compiler.CodeGeneratorResponse.File.name)
-}
 inline std::string* CodeGeneratorResponse_File::_internal_mutable_name() {
   _has_bits_[0] |= 0x00000001u;
   return name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1507,8 +1422,11 @@ inline const std::string& CodeGeneratorResponse_File::insertion_point() const {
   // @@protoc_insertion_point(field_get:google.protobuf.compiler.CodeGeneratorResponse.File.insertion_point)
   return _internal_insertion_point();
 }
-inline void CodeGeneratorResponse_File::set_insertion_point(const std::string& value) {
-  _internal_set_insertion_point(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void CodeGeneratorResponse_File::set_insertion_point(ArgT0&& arg0, ArgT... args) {
+ _has_bits_[0] |= 0x00000002u;
+ insertion_point_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.compiler.CodeGeneratorResponse.File.insertion_point)
 }
 inline std::string* CodeGeneratorResponse_File::mutable_insertion_point() {
@@ -1522,25 +1440,6 @@ inline void CodeGeneratorResponse_File::_internal_set_insertion_point(const std:
   _has_bits_[0] |= 0x00000002u;
   insertion_point_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void CodeGeneratorResponse_File::set_insertion_point(std::string&& value) {
-  _has_bits_[0] |= 0x00000002u;
-  insertion_point_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.compiler.CodeGeneratorResponse.File.insertion_point)
-}
-inline void CodeGeneratorResponse_File::set_insertion_point(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  _has_bits_[0] |= 0x00000002u;
-  insertion_point_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.compiler.CodeGeneratorResponse.File.insertion_point)
-}
-inline void CodeGeneratorResponse_File::set_insertion_point(const char* value,
-    size_t size) {
-  _has_bits_[0] |= 0x00000002u;
-  insertion_point_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.compiler.CodeGeneratorResponse.File.insertion_point)
-}
 inline std::string* CodeGeneratorResponse_File::_internal_mutable_insertion_point() {
   _has_bits_[0] |= 0x00000002u;
   return insertion_point_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1580,8 +1479,11 @@ inline const std::string& CodeGeneratorResponse_File::content() const {
   // @@protoc_insertion_point(field_get:google.protobuf.compiler.CodeGeneratorResponse.File.content)
   return _internal_content();
 }
-inline void CodeGeneratorResponse_File::set_content(const std::string& value) {
-  _internal_set_content(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void CodeGeneratorResponse_File::set_content(ArgT0&& arg0, ArgT... args) {
+ _has_bits_[0] |= 0x00000004u;
+ content_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.compiler.CodeGeneratorResponse.File.content)
 }
 inline std::string* CodeGeneratorResponse_File::mutable_content() {
@@ -1595,25 +1497,6 @@ inline void CodeGeneratorResponse_File::_internal_set_content(const std::string&
   _has_bits_[0] |= 0x00000004u;
   content_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void CodeGeneratorResponse_File::set_content(std::string&& value) {
-  _has_bits_[0] |= 0x00000004u;
-  content_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.compiler.CodeGeneratorResponse.File.content)
-}
-inline void CodeGeneratorResponse_File::set_content(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  _has_bits_[0] |= 0x00000004u;
-  content_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.compiler.CodeGeneratorResponse.File.content)
-}
-inline void CodeGeneratorResponse_File::set_content(const char* value,
-    size_t size) {
-  _has_bits_[0] |= 0x00000004u;
-  content_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.compiler.CodeGeneratorResponse.File.content)
-}
 inline std::string* CodeGeneratorResponse_File::_internal_mutable_content() {
   _has_bits_[0] |= 0x00000004u;
   return content_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1736,8 +1619,11 @@ inline const std::string& CodeGeneratorResponse::error() const {
   // @@protoc_insertion_point(field_get:google.protobuf.compiler.CodeGeneratorResponse.error)
   return _internal_error();
 }
-inline void CodeGeneratorResponse::set_error(const std::string& value) {
-  _internal_set_error(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void CodeGeneratorResponse::set_error(ArgT0&& arg0, ArgT... args) {
+ _has_bits_[0] |= 0x00000001u;
+ error_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.compiler.CodeGeneratorResponse.error)
 }
 inline std::string* CodeGeneratorResponse::mutable_error() {
@@ -1751,25 +1637,6 @@ inline void CodeGeneratorResponse::_internal_set_error(const std::string& value)
   _has_bits_[0] |= 0x00000001u;
   error_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void CodeGeneratorResponse::set_error(std::string&& value) {
-  _has_bits_[0] |= 0x00000001u;
-  error_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.compiler.CodeGeneratorResponse.error)
-}
-inline void CodeGeneratorResponse::set_error(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  _has_bits_[0] |= 0x00000001u;
-  error_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.compiler.CodeGeneratorResponse.error)
-}
-inline void CodeGeneratorResponse::set_error(const char* value,
-    size_t size) {
-  _has_bits_[0] |= 0x00000001u;
-  error_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.compiler.CodeGeneratorResponse.error)
-}
 inline std::string* CodeGeneratorResponse::_internal_mutable_error() {
   _has_bits_[0] |= 0x00000001u;
   return error_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());

src/google/protobuf/descriptor.pb.cc

@@ -1055,10 +1055,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2fdescriptor_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto, file_level_enum_descriptors_google_2fprotobuf_2fdescriptor_2eproto, file_level_service_descriptors_google_2fprotobuf_2fdescriptor_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2fdescriptor_2eproto);
-  return descriptor_table_google_2fprotobuf_2fdescriptor_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -1424,10 +1422,11 @@ void FileDescriptorSet::InternalSwap(FileDescriptorSet* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata FileDescriptorSet::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[0]);
 }
 
-
 // ===================================================================
 
 class FileDescriptorProto::_Internal {
@@ -2077,10 +2076,11 @@ void FileDescriptorProto::InternalSwap(FileDescriptorProto* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata FileDescriptorProto::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[1]);
 }
 
-
 // ===================================================================
 
 class DescriptorProto_ExtensionRange::_Internal {
@@ -2372,10 +2372,11 @@ void DescriptorProto_ExtensionRange::InternalSwap(DescriptorProto_ExtensionRange
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata DescriptorProto_ExtensionRange::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[2]);
 }
 
-
 // ===================================================================
 
 class DescriptorProto_ReservedRange::_Internal {
@@ -2621,10 +2622,11 @@ void DescriptorProto_ReservedRange::InternalSwap(DescriptorProto_ReservedRange*
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata DescriptorProto_ReservedRange::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[3]);
 }
 
-
 // ===================================================================
 
 class DescriptorProto::_Internal {
@@ -3161,10 +3163,11 @@ void DescriptorProto::InternalSwap(DescriptorProto* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata DescriptorProto::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[4]);
 }
 
-
 // ===================================================================
 
 class ExtensionRangeOptions::_Internal {
@@ -3377,10 +3380,11 @@ void ExtensionRangeOptions::InternalSwap(ExtensionRangeOptions* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata ExtensionRangeOptions::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[5]);
 }
 
-
 // ===================================================================
 
 class FieldDescriptorProto::_Internal {
@@ -4000,10 +4004,11 @@ void FieldDescriptorProto::InternalSwap(FieldDescriptorProto* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata FieldDescriptorProto::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[6]);
 }
 
-
 // ===================================================================
 
 class OneofDescriptorProto::_Internal {
@@ -4271,10 +4276,11 @@ void OneofDescriptorProto::InternalSwap(OneofDescriptorProto* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata OneofDescriptorProto::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[7]);
 }
 
-
 // ===================================================================
 
 class EnumDescriptorProto_EnumReservedRange::_Internal {
@@ -4520,10 +4526,11 @@ void EnumDescriptorProto_EnumReservedRange::InternalSwap(EnumDescriptorProto_Enu
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata EnumDescriptorProto_EnumReservedRange::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[8]);
 }
 
-
 // ===================================================================
 
 class EnumDescriptorProto::_Internal {
@@ -4895,10 +4902,11 @@ void EnumDescriptorProto::InternalSwap(EnumDescriptorProto* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata EnumDescriptorProto::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[9]);
 }
 
-
 // ===================================================================
 
 class EnumValueDescriptorProto::_Internal {
@@ -5204,10 +5212,11 @@ void EnumValueDescriptorProto::InternalSwap(EnumValueDescriptorProto* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata EnumValueDescriptorProto::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[10]);
 }
 
-
 // ===================================================================
 
 class ServiceDescriptorProto::_Internal {
@@ -5508,10 +5517,11 @@ void ServiceDescriptorProto::InternalSwap(ServiceDescriptorProto* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata ServiceDescriptorProto::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[11]);
 }
 
-
 // ===================================================================
 
 class MethodDescriptorProto::_Internal {
@@ -5934,10 +5944,11 @@ void MethodDescriptorProto::InternalSwap(MethodDescriptorProto* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata MethodDescriptorProto::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[12]);
 }
 
-
 // ===================================================================
 
 class FileOptions::_Internal {
@@ -6913,10 +6924,11 @@ void FileOptions::InternalSwap(FileOptions* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata FileOptions::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[13]);
 }
 
-
 // ===================================================================
 
 class MessageOptions::_Internal {
@@ -7259,10 +7271,11 @@ void MessageOptions::InternalSwap(MessageOptions* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata MessageOptions::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[14]);
 }
 
-
 // ===================================================================
 
 class FieldOptions::_Internal {
@@ -7670,10 +7683,11 @@ void FieldOptions::InternalSwap(FieldOptions* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata FieldOptions::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[15]);
 }
 
-
 // ===================================================================
 
 class OneofOptions::_Internal {
@@ -7886,10 +7900,11 @@ void OneofOptions::InternalSwap(OneofOptions* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata OneofOptions::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[16]);
 }
 
-
 // ===================================================================
 
 class EnumOptions::_Internal {
@@ -8182,10 +8197,11 @@ void EnumOptions::InternalSwap(EnumOptions* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata EnumOptions::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[17]);
 }
 
-
 // ===================================================================
 
 class EnumValueOptions::_Internal {
@@ -8435,10 +8451,11 @@ void EnumValueOptions::InternalSwap(EnumValueOptions* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata EnumValueOptions::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[18]);
 }
 
-
 // ===================================================================
 
 class ServiceOptions::_Internal {
@@ -8688,10 +8705,11 @@ void ServiceOptions::InternalSwap(ServiceOptions* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata ServiceOptions::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[19]);
 }
 
-
 // ===================================================================
 
 class MethodOptions::_Internal {
@@ -8993,10 +9011,11 @@ void MethodOptions::InternalSwap(MethodOptions* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata MethodOptions::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[20]);
 }
 
-
 // ===================================================================
 
 class UninterpretedOption_NamePart::_Internal {
@@ -9263,10 +9282,11 @@ void UninterpretedOption_NamePart::InternalSwap(UninterpretedOption_NamePart* ot
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata UninterpretedOption_NamePart::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[21]);
 }
 
-
 // ===================================================================
 
 class UninterpretedOption::_Internal {
@@ -9700,10 +9720,11 @@ void UninterpretedOption::InternalSwap(UninterpretedOption* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata UninterpretedOption::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[22]);
 }
 
-
 // ===================================================================
 
 class SourceCodeInfo_Location::_Internal {
@@ -10085,10 +10106,11 @@ void SourceCodeInfo_Location::InternalSwap(SourceCodeInfo_Location* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata SourceCodeInfo_Location::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[23]);
 }
 
-
 // ===================================================================
 
 class SourceCodeInfo::_Internal {
@@ -10279,10 +10301,11 @@ void SourceCodeInfo::InternalSwap(SourceCodeInfo* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata SourceCodeInfo::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[24]);
 }
 
-
 // ===================================================================
 
 class GeneratedCodeInfo_Annotation::_Internal {
@@ -10612,10 +10635,11 @@ void GeneratedCodeInfo_Annotation::InternalSwap(GeneratedCodeInfo_Annotation* ot
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata GeneratedCodeInfo_Annotation::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[25]);
 }
 
-
 // ===================================================================
 
 class GeneratedCodeInfo::_Internal {
@@ -10806,10 +10830,11 @@ void GeneratedCodeInfo::InternalSwap(GeneratedCodeInfo* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata GeneratedCodeInfo::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_getter, &descriptor_table_google_2fprotobuf_2fdescriptor_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fdescriptor_2eproto[26]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/duration.pb.cc

@@ -67,10 +67,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2fduration_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2fduration_2eproto, file_level_enum_descriptors_google_2fprotobuf_2fduration_2eproto, file_level_service_descriptors_google_2fprotobuf_2fduration_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2fduration_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2fduration_2eproto);
-  return descriptor_table_google_2fprotobuf_2fduration_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2fduration_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2fduration_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -297,10 +295,11 @@ void Duration::InternalSwap(Duration* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Duration::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fduration_2eproto_getter, &descriptor_table_google_2fprotobuf_2fduration_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fduration_2eproto[0]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/duration.pb.h

@@ -53,7 +53,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2fduration_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2fduration_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2fduration_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class Duration;
 struct DurationDefaultTypeInternal;
@@ -96,10 +95,10 @@ class PROTOBUF_EXPORT Duration PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Duration& default_instance() {
     return *internal_default_instance();
@@ -167,12 +166,6 @@ class PROTOBUF_EXPORT Duration PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fduration_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 

src/google/protobuf/empty.pb.cc

@@ -62,10 +62,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2fempty_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2fempty_2eproto, file_level_enum_descriptors_google_2fprotobuf_2fempty_2eproto, file_level_service_descriptors_google_2fprotobuf_2fempty_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2fempty_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2fempty_2eproto);
-  return descriptor_table_google_2fprotobuf_2fempty_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2fempty_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2fempty_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -225,10 +223,11 @@ void Empty::InternalSwap(Empty* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Empty::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fempty_2eproto_getter, &descriptor_table_google_2fprotobuf_2fempty_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fempty_2eproto[0]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/empty.pb.h

@@ -53,7 +53,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2fempty_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2fempty_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2fempty_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class Empty;
 struct EmptyDefaultTypeInternal;
@@ -96,10 +95,10 @@ class PROTOBUF_EXPORT Empty PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Empty& default_instance() {
     return *internal_default_instance();
@@ -167,12 +166,6 @@ class PROTOBUF_EXPORT Empty PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fempty_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 

src/google/protobuf/field_mask.pb.cc

@@ -65,10 +65,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2ffield_5fmask_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2ffield_5fmask_2eproto, file_level_enum_descriptors_google_2fprotobuf_2ffield_5fmask_2eproto, file_level_service_descriptors_google_2fprotobuf_2ffield_5fmask_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto);
-  return descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -270,10 +268,11 @@ void FieldMask::InternalSwap(FieldMask* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata FieldMask::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto_getter, &descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2ffield_5fmask_2eproto[0]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/field_mask.pb.h

@@ -53,7 +53,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2ffield_5fmask_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class FieldMask;
 struct FieldMaskDefaultTypeInternal;
@@ -96,10 +95,10 @@ class PROTOBUF_EXPORT FieldMask PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const FieldMask& default_instance() {
     return *internal_default_instance();
@@ -167,12 +166,6 @@ class PROTOBUF_EXPORT FieldMask PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2ffield_5fmask_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 

src/google/protobuf/generated_message_reflection.cc

@@ -2520,6 +2520,17 @@ void RegisterAllTypesInternal(const Metadata* file_level_metadata, int size) {
 
 namespace internal {
 
+Metadata AssignDescriptors(const DescriptorTable* (*table)(),
+                           internal::once_flag* once,
+                           const Metadata& metadata) {
+  call_once(*once, [=] {
+    auto* t = table();
+    AssignDescriptorsImpl(t, t->is_eager);
+  });
+
+  return metadata;
+}
+
 void AssignDescriptors(const DescriptorTable* table, bool eager) {
   if (!eager) eager = table->is_eager;
   call_once(*table->once, AssignDescriptorsImpl, table, eager);

src/google/protobuf/generated_message_reflection.h

@@ -290,6 +290,14 @@ enum {
 void PROTOBUF_EXPORT AssignDescriptors(const DescriptorTable* table,
                                        bool eager = false);
 
+// Overload used to implement GetMetadataStatic in the generated code.
+// See comments in compiler/cpp/internal/file.cc as to why.
+// It takes a `Metadata` and returns it to allow for tail calls and reduce
+// binary size.
+Metadata PROTOBUF_EXPORT AssignDescriptors(const DescriptorTable* (*table)(),
+                                           internal::once_flag* once,
+                                           const Metadata& metadata);
+
 // These cannot be in lite so we put them in the reflection.
 PROTOBUF_EXPORT void UnknownFieldSetSerializer(const uint8* base, uint32 offset,
                                                uint32 tag, uint32 has_offset,

src/google/protobuf/io/coded_stream.h

@@ -851,11 +851,11 @@ class PROTOBUF_EXPORT EpsCopyOutputStream {
   }
 
   static constexpr int TagSize(uint32 tag) {
-    return (tag < (1 << 7))
-               ? 1
-               : (tag < (1 << 14))
-                     ? 2
-                     : (tag < (1 << 21)) ? 3 : (tag < (1 << 28)) ? 4 : 5;
+    return (tag < (1 << 7))    ? 1
+           : (tag < (1 << 14)) ? 2
+           : (tag < (1 << 21)) ? 3
+           : (tag < (1 << 28)) ? 4
+                               : 5;
   }
 
   PROTOBUF_ALWAYS_INLINE uint8* WriteTag(uint32 num, uint32 wt, uint8* ptr) {
@@ -1181,12 +1181,11 @@ class PROTOBUF_EXPORT CodedOutputStream {
   // Compile-time equivalent of VarintSize32().
   template <uint32 Value>
   struct StaticVarintSize32 {
-    static const size_t value =
-        (Value < (1 << 7))
-            ? 1
-            : (Value < (1 << 14))
-                  ? 2
-                  : (Value < (1 << 21)) ? 3 : (Value < (1 << 28)) ? 4 : 5;
+    static const size_t value = (Value < (1 << 7))    ? 1
+                                : (Value < (1 << 14)) ? 2
+                                : (Value < (1 << 21)) ? 3
+                                : (Value < (1 << 28)) ? 4
+                                                      : 5;
   };
 
   // Returns the total number of bytes written since this object was created.

src/google/protobuf/metadata_lite.h

@@ -67,7 +67,7 @@ class InternalMetadata {
   template <typename T>
   void Delete() {
     // Note that Delete<> should be called not more than once.
-    if (have_unknown_fields() && arena() == NULL) {
+    if (have_unknown_fields()) {
       DeleteOutOfLineHelper<T>();
     }
   }
@@ -204,7 +204,9 @@ class InternalMetadata {
 
   template <typename T>
   PROTOBUF_NOINLINE void DeleteOutOfLineHelper() {
-    delete PtrValue<Container<T>>();
+    if (arena() == NULL) {
+      delete PtrValue<Container<T>>();
+    }
   }
 
   template <typename T>

src/google/protobuf/port_def.inc

@@ -198,22 +198,24 @@
 //   You can #define these annotations yourself if the default implementation
 //   is not right for you.
 
+#ifndef PROTOBUF_NO_INLINE
 #ifdef GOOGLE_ATTRIBUTE_ALWAYS_INLINE
 #define PROTOBUF_ALWAYS_INLINE GOOGLE_ATTRIBUTE_ALWAYS_INLINE
 #define PROTOBUF_NDEBUG_INLINE GOOGLE_ATTRIBUTE_ALWAYS_INLINE
-#else
-#if defined(__GNUC__) && \
+#elif defined(__GNUC__) && \
     (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
 // For functions we want to force inline.
 // Introduced in gcc 3.1.
 #define PROTOBUF_ALWAYS_INLINE __attribute__((always_inline))
 #define PROTOBUF_NDEBUG_INLINE __attribute__((always_inline))
-#else
+#endif
+#endif
+
+#ifndef PROTOBUF_ALWAYS_INLINE
 // Other compilers will have to figure it out for themselves.
 #define PROTOBUF_ALWAYS_INLINE
 #define PROTOBUF_NDEBUG_INLINE
 #endif
-#endif
 
 #ifdef GOOGLE_ATTRIBUTE_NOINLINE
 #define PROTOBUF_NOINLINE GOOGLE_ATTRIBUTE_NOINLINE

src/google/protobuf/proto3_arena_unittest.cc

@@ -317,6 +317,35 @@ TEST(Proto3OptionalTest, OptionalFieldDescriptor) {
   }
 }
 
+TEST(Proto3OptionalTest, Extensions) {
+  const DescriptorPool* p = DescriptorPool::generated_pool();
+  const FieldDescriptor* no_optional = p->FindExtensionByName(
+      "protobuf_unittest.Proto3OptionalExtensions.ext_no_optional");
+  const FieldDescriptor* with_optional = p->FindExtensionByName(
+      "protobuf_unittest.Proto3OptionalExtensions.ext_with_optional");
+  GOOGLE_CHECK(no_optional);
+  GOOGLE_CHECK(with_optional);
+  EXPECT_FALSE(no_optional->has_optional_keyword());
+  EXPECT_TRUE(with_optional->has_optional_keyword());
+
+  const Descriptor* d = protobuf_unittest::Proto3OptionalExtensions::descriptor();
+  EXPECT_TRUE(d->options().HasExtension(
+      protobuf_unittest::Proto3OptionalExtensions::ext_no_optional));
+  EXPECT_TRUE(d->options().HasExtension(
+      protobuf_unittest::Proto3OptionalExtensions::ext_with_optional));
+  EXPECT_EQ(8, d->options().GetExtension(
+                   protobuf_unittest::Proto3OptionalExtensions::ext_no_optional));
+  EXPECT_EQ(16,
+            d->options().GetExtension(
+                protobuf_unittest::Proto3OptionalExtensions::ext_with_optional));
+
+  const Descriptor* d2 = protobuf_unittest::TestProto3Optional::descriptor();
+  EXPECT_FALSE(d2->options().HasExtension(
+      protobuf_unittest::Proto3OptionalExtensions::ext_no_optional));
+  EXPECT_FALSE(d2->options().HasExtension(
+      protobuf_unittest::Proto3OptionalExtensions::ext_with_optional));
+}
+
 TEST(Proto3OptionalTest, OptionalField) {
   protobuf_unittest::TestProto3Optional msg;
   EXPECT_FALSE(msg.has_optional_int32());

src/google/protobuf/repeated_field.cc

@@ -98,6 +98,15 @@ void RepeatedPtrFieldBase::Reserve(int new_size) {
   }
 }
 
+void* RepeatedPtrFieldBase::AddOutOfLineHelper(void* obj) {
+  if (!rep_ || rep_->allocated_size == total_size_) {
+    InternalExtend(1);  // Equivalent to "Reserve(total_size_ + 1)"
+  }
+  ++rep_->allocated_size;
+  rep_->elements[current_size_++] = obj;
+  return obj;
+}
+
 void RepeatedPtrFieldBase::CloseGap(int start, int num) {
   if (rep_ == NULL) return;
   // Close up a gap of "num" elements starting at offset "start".

src/google/protobuf/repeated_field.h

@@ -171,9 +171,14 @@ class RepeatedField final {
  public:
   constexpr RepeatedField();
   explicit RepeatedField(Arena* arena);
+
   RepeatedField(const RepeatedField& other);
-  template <typename Iter>
-  RepeatedField(Iter begin, const Iter& end);
+
+  template <typename Iter,
+            typename = typename std::enable_if<std::is_constructible<
+                Element, decltype(*std::declval<Iter>())>::value>::type>
+  RepeatedField(Iter begin, Iter end);
+
   ~RepeatedField();
 
   RepeatedField& operator=(const RepeatedField& other);
@@ -769,6 +774,11 @@ class PROTOBUF_EXPORT RepeatedPtrFieldBase {
   // Reserve() and MergeFrom() to reduce code size. |extend_amount| must be > 0.
   void** InternalExtend(int extend_amount);
 
+  // Internal helper for Add: add "obj" as the next element in the
+  // array, including potentially resizing the array with Reserve if
+  // needed
+  void* AddOutOfLineHelper(void* obj);
+
   // The reflection implementation needs to call protected methods directly,
   // reinterpreting pointers as being to Message instead of a specific Message
   // subclass.
@@ -923,8 +933,12 @@ class RepeatedPtrField final : private internal::RepeatedPtrFieldBase {
   explicit RepeatedPtrField(Arena* arena);
 
   RepeatedPtrField(const RepeatedPtrField& other);
-  template <typename Iter>
-  RepeatedPtrField(Iter begin, const Iter& end);
+
+  template <typename Iter,
+            typename = typename std::enable_if<std::is_constructible<
+                Element, decltype(*std::declval<Iter>())>::value>::type>
+  RepeatedPtrField(Iter begin, Iter end);
+
   ~RepeatedPtrField();
 
   RepeatedPtrField& operator=(const RepeatedPtrField& other);
@@ -1197,8 +1211,8 @@ inline RepeatedField<Element>::RepeatedField(const RepeatedField& other)
 }
 
 template <typename Element>
-template <typename Iter>
-RepeatedField<Element>::RepeatedField(Iter begin, const Iter& end)
+template <typename Iter, typename>
+RepeatedField<Element>::RepeatedField(Iter begin, Iter end)
     : current_size_(0), total_size_(0), arena_or_elements_(nullptr) {
   Add(begin, end);
 }
@@ -1747,14 +1761,10 @@ inline typename TypeHandler::Type* RepeatedPtrFieldBase::Add(
   if (rep_ != NULL && current_size_ < rep_->allocated_size) {
     return cast<TypeHandler>(rep_->elements[current_size_++]);
   }
-  if (!rep_ || rep_->allocated_size == total_size_) {
-    Reserve(total_size_ + 1);
-  }
-  ++rep_->allocated_size;
   typename TypeHandler::Type* result =
       TypeHandler::NewFromPrototype(prototype, arena_);
-  rep_->elements[current_size_++] = result;
-  return result;
+  return reinterpret_cast<typename TypeHandler::Type*>(
+      AddOutOfLineHelper(result));
 }
 
 template <typename TypeHandler,
@@ -1828,9 +1838,19 @@ template <typename TypeHandler>
 void RepeatedPtrFieldBase::MergeFromInnerLoop(void** our_elems,
                                               void** other_elems, int length,
                                               int already_allocated) {
-  // Split into two loops, over ranges [0, allocated) and [allocated, length),
-  // to avoid a branch within the loop.
-  for (int i = 0; i < already_allocated && i < length; i++) {
+  if (already_allocated < length) {
+    Arena* arena = GetArena();
+    typename TypeHandler::Type* elem_prototype =
+        reinterpret_cast<typename TypeHandler::Type*>(other_elems[0]);
+    for (int i = already_allocated; i < length; i++) {
+      // Allocate a new empty element that we'll merge into below
+      typename TypeHandler::Type* new_elem =
+          TypeHandler::NewFromPrototype(elem_prototype, arena);
+      our_elems[i] = new_elem;
+    }
+  }
+  // Main loop that does the actual merging
+  for (int i = 0; i < length; i++) {
     // Already allocated: use existing element.
     typename TypeHandler::Type* other_elem =
         reinterpret_cast<typename TypeHandler::Type*>(other_elems[i]);
@@ -1838,16 +1858,6 @@ void RepeatedPtrFieldBase::MergeFromInnerLoop(void** our_elems,
         reinterpret_cast<typename TypeHandler::Type*>(our_elems[i]);
     TypeHandler::Merge(*other_elem, new_elem);
   }
-  Arena* arena = GetArena();
-  for (int i = already_allocated; i < length; i++) {
-    // Not allocated: alloc a new element first, then merge it.
-    typename TypeHandler::Type* other_elem =
-        reinterpret_cast<typename TypeHandler::Type*>(other_elems[i]);
-    typename TypeHandler::Type* new_elem =
-        TypeHandler::NewFromPrototype(other_elem, arena);
-    TypeHandler::Merge(*other_elem, new_elem);
-    our_elems[i] = new_elem;
-  }
 }
 
 template <typename TypeHandler>
@@ -2110,9 +2120,8 @@ inline RepeatedPtrField<Element>::RepeatedPtrField(
 }
 
 template <typename Element>
-template <typename Iter>
-inline RepeatedPtrField<Element>::RepeatedPtrField(Iter begin,
-                                                   const Iter& end) {
+template <typename Iter, typename>
+inline RepeatedPtrField<Element>::RepeatedPtrField(Iter begin, Iter end) {
   int reserve = internal::CalculateReserve(begin, end);
   if (reserve != -1) {
     Reserve(reserve);

src/google/protobuf/source_context.pb.cc

@@ -65,10 +65,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2fsource_5fcontext_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2fsource_5fcontext_2eproto, file_level_enum_descriptors_google_2fprotobuf_2fsource_5fcontext_2eproto, file_level_service_descriptors_google_2fprotobuf_2fsource_5fcontext_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto);
-  return descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -271,10 +269,11 @@ void SourceContext::InternalSwap(SourceContext* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata SourceContext::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto_getter, &descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fsource_5fcontext_2eproto[0]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/source_context.pb.h

@@ -53,7 +53,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2fsource_5fcontext_2eproto
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class SourceContext;
 struct SourceContextDefaultTypeInternal;
@@ -96,10 +95,10 @@ class PROTOBUF_EXPORT SourceContext PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const SourceContext& default_instance() {
     return *internal_default_instance();
@@ -167,12 +166,6 @@ class PROTOBUF_EXPORT SourceContext PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fsource_5fcontext_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -184,10 +177,8 @@ class PROTOBUF_EXPORT SourceContext PROTOBUF_FINAL :
   // string file_name = 1;
   void clear_file_name();
   const std::string& file_name() const;
-  void set_file_name(const std::string& value);
-  void set_file_name(std::string&& value);
-  void set_file_name(const char* value);
-  void set_file_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_file_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_file_name();
   std::string* release_file_name();
   void set_allocated_file_name(std::string* file_name);
@@ -227,8 +218,11 @@ inline const std::string& SourceContext::file_name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.SourceContext.file_name)
   return _internal_file_name();
 }
-inline void SourceContext::set_file_name(const std::string& value) {
-  _internal_set_file_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void SourceContext::set_file_name(ArgT0&& arg0, ArgT... args) {
+ 
+ file_name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.SourceContext.file_name)
 }
 inline std::string* SourceContext::mutable_file_name() {
@@ -242,25 +236,6 @@ inline void SourceContext::_internal_set_file_name(const std::string& value) {
   
   file_name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void SourceContext::set_file_name(std::string&& value) {
-  
-  file_name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.SourceContext.file_name)
-}
-inline void SourceContext::set_file_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  file_name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.SourceContext.file_name)
-}
-inline void SourceContext::set_file_name(const char* value,
-    size_t size) {
-  
-  file_name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.SourceContext.file_name)
-}
 inline std::string* SourceContext::_internal_mutable_file_name() {
   
   return file_name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());

src/google/protobuf/struct.pb.cc

@@ -143,10 +143,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2fstruct_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2fstruct_2eproto, file_level_enum_descriptors_google_2fprotobuf_2fstruct_2eproto, file_level_service_descriptors_google_2fprotobuf_2fstruct_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2fstruct_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2fstruct_2eproto);
-  return descriptor_table_google_2fprotobuf_2fstruct_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2fstruct_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2fstruct_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -175,7 +173,9 @@ void Struct_FieldsEntry_DoNotUse::MergeFrom(const Struct_FieldsEntry_DoNotUse& o
   MergeFromInternal(other);
 }
 ::PROTOBUF_NAMESPACE_ID::Metadata Struct_FieldsEntry_DoNotUse::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fstruct_2eproto_getter, &descriptor_table_google_2fprotobuf_2fstruct_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fstruct_2eproto[0]);
 }
 void Struct_FieldsEntry_DoNotUse::MergeFrom(
     const ::PROTOBUF_NAMESPACE_ID::Message& other) {
@@ -408,10 +408,11 @@ void Struct::InternalSwap(Struct* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Struct::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fstruct_2eproto_getter, &descriptor_table_google_2fprotobuf_2fstruct_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fstruct_2eproto[1]);
 }
 
-
 // ===================================================================
 
 class Value::_Internal {
@@ -847,10 +848,11 @@ void Value::InternalSwap(Value* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Value::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fstruct_2eproto_getter, &descriptor_table_google_2fprotobuf_2fstruct_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fstruct_2eproto[2]);
 }
 
-
 // ===================================================================
 
 class ListValue::_Internal {
@@ -1041,10 +1043,11 @@ void ListValue::InternalSwap(ListValue* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata ListValue::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fstruct_2eproto_getter, &descriptor_table_google_2fprotobuf_2fstruct_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fstruct_2eproto[3]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/struct.pb.h

@@ -57,7 +57,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2fstruct_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2fstruct_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2fstruct_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class ListValue;
 struct ListValueDefaultTypeInternal;
@@ -127,13 +126,6 @@ public:
   static bool ValidateValue(void*) { return true; }
   void MergeFrom(const ::PROTOBUF_NAMESPACE_ID::Message& other) final;
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&::descriptor_table_google_2fprotobuf_2fstruct_2eproto);
-    return ::descriptor_table_google_2fprotobuf_2fstruct_2eproto.file_level_metadata[0];
-  }
-
-  public:
 };
 
 // -------------------------------------------------------------------
@@ -168,10 +160,10 @@ class PROTOBUF_EXPORT Struct PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Struct& default_instance() {
     return *internal_default_instance();
@@ -239,12 +231,6 @@ class PROTOBUF_EXPORT Struct PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fstruct_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -318,10 +304,10 @@ class PROTOBUF_EXPORT Value PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Value& default_instance() {
     return *internal_default_instance();
@@ -399,12 +385,6 @@ class PROTOBUF_EXPORT Value PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fstruct_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -451,10 +431,8 @@ class PROTOBUF_EXPORT Value PROTOBUF_FINAL :
   public:
   void clear_string_value();
   const std::string& string_value() const;
-  void set_string_value(const std::string& value);
-  void set_string_value(std::string&& value);
-  void set_string_value(const char* value);
-  void set_string_value(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_string_value(ArgT0&& arg0, ArgT... args);
   std::string* mutable_string_value();
   std::string* release_string_value();
   void set_allocated_string_value(std::string* string_value);
@@ -578,10 +556,10 @@ class PROTOBUF_EXPORT ListValue PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const ListValue& default_instance() {
     return *internal_default_instance();
@@ -649,12 +627,6 @@ class PROTOBUF_EXPORT ListValue PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fstruct_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -834,8 +806,14 @@ inline const std::string& Value::string_value() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Value.string_value)
   return _internal_string_value();
 }
-inline void Value::set_string_value(const std::string& value) {
-  _internal_set_string_value(value);
+template <typename ArgT0, typename... ArgT>
+inline void Value::set_string_value(ArgT0&& arg0, ArgT... args) {
+  if (!_internal_has_string_value()) {
+    clear_kind();
+    set_has_string_value();
+    kind_.string_value_.UnsafeSetDefault(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited());
+  }
+  kind_.string_value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Value.string_value)
 }
 inline std::string* Value::mutable_string_value() {
@@ -856,41 +834,6 @@ inline void Value::_internal_set_string_value(const std::string& value) {
   }
   kind_.string_value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Value::set_string_value(std::string&& value) {
-  // @@protoc_insertion_point(field_set:google.protobuf.Value.string_value)
-  if (!_internal_has_string_value()) {
-    clear_kind();
-    set_has_string_value();
-    kind_.string_value_.UnsafeSetDefault(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited());
-  }
-  kind_.string_value_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Value.string_value)
-}
-inline void Value::set_string_value(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  if (!_internal_has_string_value()) {
-    clear_kind();
-    set_has_string_value();
-    kind_.string_value_.UnsafeSetDefault(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited());
-  }
-  kind_.string_value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{},
-      ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Value.string_value)
-}
-inline void Value::set_string_value(const char* value,
-                             size_t size) {
-  if (!_internal_has_string_value()) {
-    clear_kind();
-    set_has_string_value();
-    kind_.string_value_.UnsafeSetDefault(&::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited());
-  }
-  kind_.string_value_.Set(
-      ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size),
-      GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Value.string_value)
-}
 inline std::string* Value::_internal_mutable_string_value() {
   if (!_internal_has_string_value()) {
     clear_kind();

src/google/protobuf/timestamp.pb.cc

@@ -67,10 +67,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2ftimestamp_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2ftimestamp_2eproto, file_level_enum_descriptors_google_2fprotobuf_2ftimestamp_2eproto, file_level_service_descriptors_google_2fprotobuf_2ftimestamp_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2ftimestamp_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2ftimestamp_2eproto);
-  return descriptor_table_google_2fprotobuf_2ftimestamp_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2ftimestamp_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2ftimestamp_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -297,10 +295,11 @@ void Timestamp::InternalSwap(Timestamp* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Timestamp::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2ftimestamp_2eproto_getter, &descriptor_table_google_2fprotobuf_2ftimestamp_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2ftimestamp_2eproto[0]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/timestamp.pb.h

@@ -53,7 +53,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2ftimestamp_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2ftimestamp_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2ftimestamp_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class Timestamp;
 struct TimestampDefaultTypeInternal;
@@ -96,10 +95,10 @@ class PROTOBUF_EXPORT Timestamp PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Timestamp& default_instance() {
     return *internal_default_instance();
@@ -167,12 +166,6 @@ class PROTOBUF_EXPORT Timestamp PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2ftimestamp_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 

src/google/protobuf/type.pb.cc

@@ -229,10 +229,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2ftype_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2ftype_2eproto, file_level_enum_descriptors_google_2fprotobuf_2ftype_2eproto, file_level_service_descriptors_google_2fprotobuf_2ftype_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2ftype_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2ftype_2eproto);
-  return descriptor_table_google_2fprotobuf_2ftype_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2ftype_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2ftype_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -712,10 +710,11 @@ void Type::InternalSwap(Type* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Type::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2ftype_2eproto_getter, &descriptor_table_google_2fprotobuf_2ftype_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2ftype_2eproto[0]);
 }
 
-
 // ===================================================================
 
 class Field::_Internal {
@@ -1189,10 +1188,11 @@ void Field::InternalSwap(Field* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Field::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2ftype_2eproto_getter, &descriptor_table_google_2fprotobuf_2ftype_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2ftype_2eproto[1]);
 }
 
-
 // ===================================================================
 
 class Enum::_Internal {
@@ -1535,10 +1535,11 @@ void Enum::InternalSwap(Enum* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Enum::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2ftype_2eproto_getter, &descriptor_table_google_2fprotobuf_2ftype_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2ftype_2eproto[2]);
 }
 
-
 // ===================================================================
 
 class EnumValue::_Internal {
@@ -1794,10 +1795,11 @@ void EnumValue::InternalSwap(EnumValue* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata EnumValue::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2ftype_2eproto_getter, &descriptor_table_google_2fprotobuf_2ftype_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2ftype_2eproto[3]);
 }
 
-
 // ===================================================================
 
 class Option::_Internal {
@@ -2042,10 +2044,11 @@ void Option::InternalSwap(Option* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Option::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2ftype_2eproto_getter, &descriptor_table_google_2fprotobuf_2ftype_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2ftype_2eproto[4]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/type.pb.h

@@ -56,7 +56,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2ftype_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2ftype_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2ftype_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class Enum;
 struct EnumDefaultTypeInternal;
@@ -209,10 +208,10 @@ class PROTOBUF_EXPORT Type PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Type& default_instance() {
     return *internal_default_instance();
@@ -280,12 +279,6 @@ class PROTOBUF_EXPORT Type PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2ftype_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -362,10 +355,8 @@ class PROTOBUF_EXPORT Type PROTOBUF_FINAL :
   // string name = 1;
   void clear_name();
   const std::string& name() const;
-  void set_name(const std::string& value);
-  void set_name(std::string&& value);
-  void set_name(const char* value);
-  void set_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_name();
   std::string* release_name();
   void set_allocated_name(std::string* name);
@@ -450,10 +441,10 @@ class PROTOBUF_EXPORT Field PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Field& default_instance() {
     return *internal_default_instance();
@@ -521,12 +512,6 @@ class PROTOBUF_EXPORT Field PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2ftype_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -663,10 +648,8 @@ class PROTOBUF_EXPORT Field PROTOBUF_FINAL :
   // string name = 4;
   void clear_name();
   const std::string& name() const;
-  void set_name(const std::string& value);
-  void set_name(std::string&& value);
-  void set_name(const char* value);
-  void set_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_name();
   std::string* release_name();
   void set_allocated_name(std::string* name);
@@ -679,10 +662,8 @@ class PROTOBUF_EXPORT Field PROTOBUF_FINAL :
   // string type_url = 6;
   void clear_type_url();
   const std::string& type_url() const;
-  void set_type_url(const std::string& value);
-  void set_type_url(std::string&& value);
-  void set_type_url(const char* value);
-  void set_type_url(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_type_url(ArgT0&& arg0, ArgT... args);
   std::string* mutable_type_url();
   std::string* release_type_url();
   void set_allocated_type_url(std::string* type_url);
@@ -695,10 +676,8 @@ class PROTOBUF_EXPORT Field PROTOBUF_FINAL :
   // string json_name = 10;
   void clear_json_name();
   const std::string& json_name() const;
-  void set_json_name(const std::string& value);
-  void set_json_name(std::string&& value);
-  void set_json_name(const char* value);
-  void set_json_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_json_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_json_name();
   std::string* release_json_name();
   void set_allocated_json_name(std::string* json_name);
@@ -711,10 +690,8 @@ class PROTOBUF_EXPORT Field PROTOBUF_FINAL :
   // string default_value = 11;
   void clear_default_value();
   const std::string& default_value() const;
-  void set_default_value(const std::string& value);
-  void set_default_value(std::string&& value);
-  void set_default_value(const char* value);
-  void set_default_value(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_default_value(ArgT0&& arg0, ArgT... args);
   std::string* mutable_default_value();
   std::string* release_default_value();
   void set_allocated_default_value(std::string* default_value);
@@ -821,10 +798,10 @@ class PROTOBUF_EXPORT Enum PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Enum& default_instance() {
     return *internal_default_instance();
@@ -892,12 +869,6 @@ class PROTOBUF_EXPORT Enum PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2ftype_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -949,10 +920,8 @@ class PROTOBUF_EXPORT Enum PROTOBUF_FINAL :
   // string name = 1;
   void clear_name();
   const std::string& name() const;
-  void set_name(const std::string& value);
-  void set_name(std::string&& value);
-  void set_name(const char* value);
-  void set_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_name();
   std::string* release_name();
   void set_allocated_name(std::string* name);
@@ -1036,10 +1005,10 @@ class PROTOBUF_EXPORT EnumValue PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const EnumValue& default_instance() {
     return *internal_default_instance();
@@ -1107,12 +1076,6 @@ class PROTOBUF_EXPORT EnumValue PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2ftype_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -1144,10 +1107,8 @@ class PROTOBUF_EXPORT EnumValue PROTOBUF_FINAL :
   // string name = 1;
   void clear_name();
   const std::string& name() const;
-  void set_name(const std::string& value);
-  void set_name(std::string&& value);
-  void set_name(const char* value);
-  void set_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_name();
   std::string* release_name();
   void set_allocated_name(std::string* name);
@@ -1211,10 +1172,10 @@ class PROTOBUF_EXPORT Option PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Option& default_instance() {
     return *internal_default_instance();
@@ -1282,12 +1243,6 @@ class PROTOBUF_EXPORT Option PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2ftype_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -1300,10 +1255,8 @@ class PROTOBUF_EXPORT Option PROTOBUF_FINAL :
   // string name = 1;
   void clear_name();
   const std::string& name() const;
-  void set_name(const std::string& value);
-  void set_name(std::string&& value);
-  void set_name(const char* value);
-  void set_name(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_name(ArgT0&& arg0, ArgT... args);
   std::string* mutable_name();
   std::string* release_name();
   void set_allocated_name(std::string* name);
@@ -1362,8 +1315,11 @@ inline const std::string& Type::name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Type.name)
   return _internal_name();
 }
-inline void Type::set_name(const std::string& value) {
-  _internal_set_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Type::set_name(ArgT0&& arg0, ArgT... args) {
+ 
+ name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Type.name)
 }
 inline std::string* Type::mutable_name() {
@@ -1377,25 +1333,6 @@ inline void Type::_internal_set_name(const std::string& value) {
   
   name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Type::set_name(std::string&& value) {
-  
-  name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Type.name)
-}
-inline void Type::set_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Type.name)
-}
-inline void Type::set_name(const char* value,
-    size_t size) {
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Type.name)
-}
 inline std::string* Type::_internal_mutable_name() {
   
   return name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1736,8 +1673,11 @@ inline const std::string& Field::name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Field.name)
   return _internal_name();
 }
-inline void Field::set_name(const std::string& value) {
-  _internal_set_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Field::set_name(ArgT0&& arg0, ArgT... args) {
+ 
+ name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Field.name)
 }
 inline std::string* Field::mutable_name() {
@@ -1751,25 +1691,6 @@ inline void Field::_internal_set_name(const std::string& value) {
   
   name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Field::set_name(std::string&& value) {
-  
-  name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Field.name)
-}
-inline void Field::set_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Field.name)
-}
-inline void Field::set_name(const char* value,
-    size_t size) {
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Field.name)
-}
 inline std::string* Field::_internal_mutable_name() {
   
   return name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1797,8 +1718,11 @@ inline const std::string& Field::type_url() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Field.type_url)
   return _internal_type_url();
 }
-inline void Field::set_type_url(const std::string& value) {
-  _internal_set_type_url(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Field::set_type_url(ArgT0&& arg0, ArgT... args) {
+ 
+ type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Field.type_url)
 }
 inline std::string* Field::mutable_type_url() {
@@ -1812,25 +1736,6 @@ inline void Field::_internal_set_type_url(const std::string& value) {
   
   type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Field::set_type_url(std::string&& value) {
-  
-  type_url_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Field.type_url)
-}
-inline void Field::set_type_url(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Field.type_url)
-}
-inline void Field::set_type_url(const char* value,
-    size_t size) {
-  
-  type_url_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Field.type_url)
-}
 inline std::string* Field::_internal_mutable_type_url() {
   
   return type_url_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1937,8 +1842,11 @@ inline const std::string& Field::json_name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Field.json_name)
   return _internal_json_name();
 }
-inline void Field::set_json_name(const std::string& value) {
-  _internal_set_json_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Field::set_json_name(ArgT0&& arg0, ArgT... args) {
+ 
+ json_name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Field.json_name)
 }
 inline std::string* Field::mutable_json_name() {
@@ -1952,25 +1860,6 @@ inline void Field::_internal_set_json_name(const std::string& value) {
   
   json_name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Field::set_json_name(std::string&& value) {
-  
-  json_name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Field.json_name)
-}
-inline void Field::set_json_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  json_name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Field.json_name)
-}
-inline void Field::set_json_name(const char* value,
-    size_t size) {
-  
-  json_name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Field.json_name)
-}
 inline std::string* Field::_internal_mutable_json_name() {
   
   return json_name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1998,8 +1887,11 @@ inline const std::string& Field::default_value() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Field.default_value)
   return _internal_default_value();
 }
-inline void Field::set_default_value(const std::string& value) {
-  _internal_set_default_value(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Field::set_default_value(ArgT0&& arg0, ArgT... args) {
+ 
+ default_value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Field.default_value)
 }
 inline std::string* Field::mutable_default_value() {
@@ -2013,25 +1905,6 @@ inline void Field::_internal_set_default_value(const std::string& value) {
   
   default_value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Field::set_default_value(std::string&& value) {
-  
-  default_value_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Field.default_value)
-}
-inline void Field::set_default_value(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  default_value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Field.default_value)
-}
-inline void Field::set_default_value(const char* value,
-    size_t size) {
-  
-  default_value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Field.default_value)
-}
 inline std::string* Field::_internal_mutable_default_value() {
   
   return default_value_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -2063,8 +1936,11 @@ inline const std::string& Enum::name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Enum.name)
   return _internal_name();
 }
-inline void Enum::set_name(const std::string& value) {
-  _internal_set_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Enum::set_name(ArgT0&& arg0, ArgT... args) {
+ 
+ name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Enum.name)
 }
 inline std::string* Enum::mutable_name() {
@@ -2078,25 +1954,6 @@ inline void Enum::_internal_set_name(const std::string& value) {
   
   name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Enum::set_name(std::string&& value) {
-  
-  name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Enum.name)
-}
-inline void Enum::set_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Enum.name)
-}
-inline void Enum::set_name(const char* value,
-    size_t size) {
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Enum.name)
-}
 inline std::string* Enum::_internal_mutable_name() {
   
   return name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -2303,8 +2160,11 @@ inline const std::string& EnumValue::name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.EnumValue.name)
   return _internal_name();
 }
-inline void EnumValue::set_name(const std::string& value) {
-  _internal_set_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void EnumValue::set_name(ArgT0&& arg0, ArgT... args) {
+ 
+ name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.EnumValue.name)
 }
 inline std::string* EnumValue::mutable_name() {
@@ -2318,25 +2178,6 @@ inline void EnumValue::_internal_set_name(const std::string& value) {
   
   name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void EnumValue::set_name(std::string&& value) {
-  
-  name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.EnumValue.name)
-}
-inline void EnumValue::set_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.EnumValue.name)
-}
-inline void EnumValue::set_name(const char* value,
-    size_t size) {
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.EnumValue.name)
-}
 inline std::string* EnumValue::_internal_mutable_name() {
   
   return name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -2427,8 +2268,11 @@ inline const std::string& Option::name() const {
   // @@protoc_insertion_point(field_get:google.protobuf.Option.name)
   return _internal_name();
 }
-inline void Option::set_name(const std::string& value) {
-  _internal_set_name(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void Option::set_name(ArgT0&& arg0, ArgT... args) {
+ 
+ name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.Option.name)
 }
 inline std::string* Option::mutable_name() {
@@ -2442,25 +2286,6 @@ inline void Option::_internal_set_name(const std::string& value) {
   
   name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void Option::set_name(std::string&& value) {
-  
-  name_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.Option.name)
-}
-inline void Option::set_name(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.Option.name)
-}
-inline void Option::set_name(const char* value,
-    size_t size) {
-  
-  name_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.Option.name)
-}
 inline std::string* Option::_internal_mutable_name() {
   
   return name_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());

src/google/protobuf/unittest_lite.proto

@@ -494,3 +494,8 @@ message DupEnum {
     BAR2 = 2;
   }
 }
+
+message RecursiveMessage {
+  optional RecursiveMessage recurse = 1;
+  optional bytes payload = 2;
+}

src/google/protobuf/unittest_proto3_optional.proto

@@ -32,6 +32,8 @@ syntax = "proto3";
 
 package protobuf_unittest;
 
+import "google/protobuf/descriptor.proto";
+
 option java_multiple_files = true;
 option java_package = "com.google.protobuf.testing.proto";
 
@@ -86,3 +88,13 @@ message TestProto3OptionalMessage {
   NestedMessage nested_message = 1;
   optional NestedMessage optional_nested_message = 2;
 }
+
+message Proto3OptionalExtensions {
+  option (protobuf_unittest.Proto3OptionalExtensions.ext_no_optional) = 8;
+  option (protobuf_unittest.Proto3OptionalExtensions.ext_with_optional) = 16;
+
+  extend google.protobuf.MessageOptions {
+    int32 ext_no_optional = 355886728;
+    optional int32 ext_with_optional = 355886729;
+  }
+}

src/google/protobuf/util/internal/constants.h

@@ -31,6 +31,8 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_CONSTANTS_H__
 #define GOOGLE_PROTOBUF_UTIL_CONVERTER_CONSTANTS_H__
 
+#include <cstdint>
+
 #include <google/protobuf/stubs/common.h>
 
 // This file contains constants used by //net/proto2/util/converter.
@@ -50,19 +52,19 @@ const char kRfc3339TimeFormat[] = "%E4Y-%m-%dT%H:%M:%S";
 const char kRfc3339TimeFormatNoPadding[] = "%Y-%m-%dT%H:%M:%S";
 
 // Minimum seconds allowed in a google.protobuf.Timestamp value.
-const int64 kTimestampMinSeconds = -62135596800LL;
+const int64_t kTimestampMinSeconds = -62135596800LL;
 
 // Maximum seconds allowed in a google.protobuf.Timestamp value.
-const int64 kTimestampMaxSeconds = 253402300799LL;
+const int64_t kTimestampMaxSeconds = 253402300799LL;
 
 // Minimum seconds allowed in a google.protobuf.Duration value.
-const int64 kDurationMinSeconds = -315576000000LL;
+const int64_t kDurationMinSeconds = -315576000000LL;
 
 // Maximum seconds allowed in a google.protobuf.Duration value.
-const int64 kDurationMaxSeconds = 315576000000LL;
+const int64_t kDurationMaxSeconds = 315576000000LL;
 
 // Nano seconds in a second.
-const int32 kNanosPerSecond = 1000000000;
+const int32_t kNanosPerSecond = 1000000000;
 
 // Type url representing NULL values in google.protobuf.Struct type.
 const char kStructNullValueTypeUrl[] =

src/google/protobuf/util/internal/datapiece.cc

@@ -31,6 +31,7 @@
 #include <google/protobuf/util/internal/datapiece.h>
 
 #include <cmath>
+#include <cstdint>
 #include <limits>
 
 #include <google/protobuf/struct.pb.h>
@@ -114,54 +115,56 @@ util::StatusOr<float> DoubleToFloat(double before) {
 
 }  // namespace
 
-util::StatusOr<int32> DataPiece::ToInt32() const {
-  if (type_ == TYPE_STRING) return StringToNumber<int32>(safe_strto32);
+util::StatusOr<int32_t> DataPiece::ToInt32() const {
+  if (type_ == TYPE_STRING)
+    return StringToNumber<int32_t>(safe_strto32);
 
   if (type_ == TYPE_DOUBLE)
-    return FloatingPointToIntConvertAndCheck<int32, double>(double_);
+    return FloatingPointToIntConvertAndCheck<int32_t, double>(double_);
 
   if (type_ == TYPE_FLOAT)
-    return FloatingPointToIntConvertAndCheck<int32, float>(float_);
+    return FloatingPointToIntConvertAndCheck<int32_t, float>(float_);
 
-  return GenericConvert<int32>();
+  return GenericConvert<int32_t>();
 }
 
-util::StatusOr<uint32> DataPiece::ToUint32() const {
+util::StatusOr<uint32_t> DataPiece::ToUint32() const {
   if (type_ == TYPE_STRING)
-    return StringToNumber<uint32>(safe_strtou32);
+    return StringToNumber<uint32_t>(safe_strtou32);
 
   if (type_ == TYPE_DOUBLE)
-    return FloatingPointToIntConvertAndCheck<uint32, double>(double_);
+    return FloatingPointToIntConvertAndCheck<uint32_t, double>(double_);
 
   if (type_ == TYPE_FLOAT)
-    return FloatingPointToIntConvertAndCheck<uint32, float>(float_);
+    return FloatingPointToIntConvertAndCheck<uint32_t, float>(float_);
 
-  return GenericConvert<uint32>();
+  return GenericConvert<uint32_t>();
 }
 
-util::StatusOr<int64> DataPiece::ToInt64() const {
-  if (type_ == TYPE_STRING) return StringToNumber<int64>(safe_strto64);
+util::StatusOr<int64_t> DataPiece::ToInt64() const {
+  if (type_ == TYPE_STRING)
+    return StringToNumber<int64_t>(safe_strto64);
 
   if (type_ == TYPE_DOUBLE)
-    return FloatingPointToIntConvertAndCheck<int64, double>(double_);
+    return FloatingPointToIntConvertAndCheck<int64_t, double>(double_);
 
   if (type_ == TYPE_FLOAT)
-    return FloatingPointToIntConvertAndCheck<int64, float>(float_);
+    return FloatingPointToIntConvertAndCheck<int64_t, float>(float_);
 
-  return GenericConvert<int64>();
+  return GenericConvert<int64_t>();
 }
 
-util::StatusOr<uint64> DataPiece::ToUint64() const {
+util::StatusOr<uint64_t> DataPiece::ToUint64() const {
   if (type_ == TYPE_STRING)
-    return StringToNumber<uint64>(safe_strtou64);
+    return StringToNumber<uint64_t>(safe_strtou64);
 
   if (type_ == TYPE_DOUBLE)
-    return FloatingPointToIntConvertAndCheck<uint64, double>(double_);
+    return FloatingPointToIntConvertAndCheck<uint64_t, double>(double_);
 
   if (type_ == TYPE_FLOAT)
-    return FloatingPointToIntConvertAndCheck<uint64, float>(float_);
+    return FloatingPointToIntConvertAndCheck<uint64_t, float>(float_);
 
-  return GenericConvert<uint64>();
+  return GenericConvert<uint64_t>();
 }
 
 util::StatusOr<double> DataPiece::ToDouble() const {
@@ -286,7 +289,7 @@ util::StatusOr<int> DataPiece::ToEnum(const google::protobuf::Enum* enum_type,
     if (value != nullptr) return value->number();
 
     // Check if int version of enum is sent as string.
-    util::StatusOr<int32> int_value = ToInt32();
+    util::StatusOr<int32_t> int_value = ToInt32();
     if (int_value.ok()) {
       if (const google::protobuf::EnumValue* enum_value =
               FindEnumValueByNumberOrNull(enum_type, int_value.value())) {
@@ -334,13 +337,13 @@ template <typename To>
 util::StatusOr<To> DataPiece::GenericConvert() const {
   switch (type_) {
     case TYPE_INT32:
-      return NumberConvertAndCheck<To, int32>(i32_);
+      return NumberConvertAndCheck<To, int32_t>(i32_);
     case TYPE_INT64:
-      return NumberConvertAndCheck<To, int64>(i64_);
+      return NumberConvertAndCheck<To, int64_t>(i64_);
     case TYPE_UINT32:
-      return NumberConvertAndCheck<To, uint32>(u32_);
+      return NumberConvertAndCheck<To, uint32_t>(u32_);
     case TYPE_UINT64:
-      return NumberConvertAndCheck<To, uint64>(u64_);
+      return NumberConvertAndCheck<To, uint64_t>(u64_);
     case TYPE_DOUBLE:
       return NumberConvertAndCheck<To, double>(double_);
     case TYPE_FLOAT:

src/google/protobuf/util/internal/datapiece.h

@@ -31,6 +31,7 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_DATAPIECE_H__
 #define GOOGLE_PROTOBUF_UTIL_CONVERTER_DATAPIECE_H__
 
+#include <cstdint>
 #include <string>
 
 #include <google/protobuf/stubs/common.h>
@@ -75,13 +76,13 @@ class PROTOBUF_EXPORT DataPiece {
   };
 
   // Constructors and Destructor
-  explicit DataPiece(const int32 value)
+  explicit DataPiece(const int32_t value)
       : type_(TYPE_INT32), i32_(value), use_strict_base64_decoding_(false) {}
-  explicit DataPiece(const int64 value)
+  explicit DataPiece(const int64_t value)
       : type_(TYPE_INT64), i64_(value), use_strict_base64_decoding_(false) {}
-  explicit DataPiece(const uint32 value)
+  explicit DataPiece(const uint32_t value)
       : type_(TYPE_UINT32), u32_(value), use_strict_base64_decoding_(false) {}
-  explicit DataPiece(const uint64 value)
+  explicit DataPiece(const uint64_t value)
       : type_(TYPE_UINT64), u64_(value), use_strict_base64_decoding_(false) {}
   explicit DataPiece(const double value)
       : type_(TYPE_DOUBLE),
@@ -125,16 +126,16 @@ class PROTOBUF_EXPORT DataPiece {
 
 
   // Parses, casts or converts the value stored in the DataPiece into an int32.
-  util::StatusOr<int32> ToInt32() const;
+  util::StatusOr<int32_t> ToInt32() const;
 
   // Parses, casts or converts the value stored in the DataPiece into a uint32.
-  util::StatusOr<uint32> ToUint32() const;
+  util::StatusOr<uint32_t> ToUint32() const;
 
   // Parses, casts or converts the value stored in the DataPiece into an int64.
-  util::StatusOr<int64> ToInt64() const;
+  util::StatusOr<int64_t> ToInt64() const;
 
   // Parses, casts or converts the value stored in the DataPiece into a uint64.
-  util::StatusOr<uint64> ToUint64() const;
+  util::StatusOr<uint64_t> ToUint64() const;
 
   // Parses, casts or converts the value stored in the DataPiece into a double.
   util::StatusOr<double> ToDouble() const;
@@ -161,7 +162,7 @@ class PROTOBUF_EXPORT DataPiece {
   DataPiece();
 
   // Helper to create NULL or ENUM types.
-  DataPiece(Type type, int32 val)
+  DataPiece(Type type, int32_t val)
       : type_(type), i32_(val), use_strict_base64_decoding_(false) {}
 
   // Same as the ToEnum() method above but with additional flag to ignore
@@ -195,10 +196,10 @@ class PROTOBUF_EXPORT DataPiece {
 
   // Stored piece of data.
   union {
-    int32 i32_;
-    int64 i64_;
-    uint32 u32_;
-    uint64 u64_;
+    int32_t i32_;
+    int64_t i64_;
+    uint32_t u32_;
+    uint64_t u64_;
     double double_;
     float float_;
     bool bool_;

src/google/protobuf/util/internal/default_value_objectwriter.cc

@@ -30,6 +30,7 @@
 
 #include <google/protobuf/util/internal/default_value_objectwriter.h>
 
+#include <cstdint>
 #include <unordered_map>
 
 #include <google/protobuf/util/internal/constants.h>
@@ -85,7 +86,7 @@ DefaultValueObjectWriter* DefaultValueObjectWriter::RenderBool(
 }
 
 DefaultValueObjectWriter* DefaultValueObjectWriter::RenderInt32(
-    StringPiece name, int32 value) {
+    StringPiece name, int32_t value) {
   if (current_ == nullptr) {
     ow_->RenderInt32(name, value);
   } else {
@@ -95,7 +96,7 @@ DefaultValueObjectWriter* DefaultValueObjectWriter::RenderInt32(
 }
 
 DefaultValueObjectWriter* DefaultValueObjectWriter::RenderUint32(
-    StringPiece name, uint32 value) {
+    StringPiece name, uint32_t value) {
   if (current_ == nullptr) {
     ow_->RenderUint32(name, value);
   } else {
@@ -105,7 +106,7 @@ DefaultValueObjectWriter* DefaultValueObjectWriter::RenderUint32(
 }
 
 DefaultValueObjectWriter* DefaultValueObjectWriter::RenderInt64(
-    StringPiece name, int64 value) {
+    StringPiece name, int64_t value) {
   if (current_ == nullptr) {
     ow_->RenderInt64(name, value);
   } else {
@@ -115,7 +116,7 @@ DefaultValueObjectWriter* DefaultValueObjectWriter::RenderInt64(
 }
 
 DefaultValueObjectWriter* DefaultValueObjectWriter::RenderUint64(
-    StringPiece name, uint64 value) {
+    StringPiece name, uint64_t value) {
   if (current_ == nullptr) {
     ow_->RenderUint64(name, value);
   } else {
@@ -445,19 +446,20 @@ DataPiece DefaultValueObjectWriter::CreateDefaultDataPieceForField(
     case google::protobuf::Field::TYPE_INT64:
     case google::protobuf::Field::TYPE_SINT64:
     case google::protobuf::Field::TYPE_SFIXED64: {
-      return DataPiece(ConvertTo<int64>(
-          field.default_value(), &DataPiece::ToInt64, static_cast<int64>(0)));
+      return DataPiece(ConvertTo<int64_t>(
+          field.default_value(), &DataPiece::ToInt64, static_cast<int64_t>(0)));
     }
     case google::protobuf::Field::TYPE_UINT64:
     case google::protobuf::Field::TYPE_FIXED64: {
-      return DataPiece(ConvertTo<uint64>(
-          field.default_value(), &DataPiece::ToUint64, static_cast<uint64>(0)));
+      return DataPiece(ConvertTo<uint64_t>(field.default_value(),
+                                           &DataPiece::ToUint64,
+                                           static_cast<uint64_t>(0)));
     }
     case google::protobuf::Field::TYPE_INT32:
     case google::protobuf::Field::TYPE_SINT32:
     case google::protobuf::Field::TYPE_SFIXED32: {
-      return DataPiece(ConvertTo<int32>(
-          field.default_value(), &DataPiece::ToInt32, static_cast<int32>(0)));
+      return DataPiece(ConvertTo<int32_t>(
+          field.default_value(), &DataPiece::ToInt32, static_cast<int32_t>(0)));
     }
     case google::protobuf::Field::TYPE_BOOL: {
       return DataPiece(
@@ -471,8 +473,9 @@ DataPiece DefaultValueObjectWriter::CreateDefaultDataPieceForField(
     }
     case google::protobuf::Field::TYPE_UINT32:
     case google::protobuf::Field::TYPE_FIXED32: {
-      return DataPiece(ConvertTo<uint32>(
-          field.default_value(), &DataPiece::ToUint32, static_cast<uint32>(0)));
+      return DataPiece(ConvertTo<uint32_t>(field.default_value(),
+                                           &DataPiece::ToUint32,
+                                           static_cast<uint32_t>(0)));
     }
     case google::protobuf::Field::TYPE_ENUM: {
       return FindEnumDefault(field, typeinfo, use_ints_for_enums);

src/google/protobuf/util/internal/default_value_objectwriter.h

@@ -31,6 +31,7 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_DEFAULT_VALUE_OBJECTWRITER_H__
 #define GOOGLE_PROTOBUF_UTIL_CONVERTER_DEFAULT_VALUE_OBJECTWRITER_H__
 
+#include <cstdint>
 #include <functional>
 #include <memory>
 #include <stack>
@@ -95,16 +96,16 @@ class PROTOBUF_EXPORT DefaultValueObjectWriter : public ObjectWriter {
                                        bool value) override;
 
   DefaultValueObjectWriter* RenderInt32(StringPiece name,
-                                        int32 value) override;
+                                        int32_t value) override;
 
   DefaultValueObjectWriter* RenderUint32(StringPiece name,
-                                         uint32 value) override;
+                                         uint32_t value) override;
 
   DefaultValueObjectWriter* RenderInt64(StringPiece name,
-                                        int64 value) override;
+                                        int64_t value) override;
 
   DefaultValueObjectWriter* RenderUint64(StringPiece name,
-                                         uint64 value) override;
+                                         uint64_t value) override;
 
   DefaultValueObjectWriter* RenderDouble(StringPiece name,
                                          double value) override;

src/google/protobuf/util/internal/expecting_objectwriter.h

@@ -50,6 +50,8 @@
 //         ->RenderString("key", "value")
 //       ->EndObject();
 
+#include <cstdint>
+
 #include <google/protobuf/stubs/common.h>
 #include <google/protobuf/util/internal/object_writer.h>
 #include <gmock/gmock.h>
@@ -77,13 +79,13 @@ class MockObjectWriter : public ObjectWriter {
   MOCK_METHOD(ObjectWriter*, StartList, (StringPiece), (override));
   MOCK_METHOD(ObjectWriter*, EndList, (), (override));
   MOCK_METHOD(ObjectWriter*, RenderBool, (StringPiece, bool), (override));
-  MOCK_METHOD(ObjectWriter*, RenderInt32, (StringPiece, int32),
+  MOCK_METHOD(ObjectWriter*, RenderInt32, (StringPiece, int32_t),
               (override));
-  MOCK_METHOD(ObjectWriter*, RenderUint32, (StringPiece, uint32),
+  MOCK_METHOD(ObjectWriter*, RenderUint32, (StringPiece, uint32_t),
               (override));
-  MOCK_METHOD(ObjectWriter*, RenderInt64, (StringPiece, int64),
+  MOCK_METHOD(ObjectWriter*, RenderInt64, (StringPiece, int64_t),
               (override));
-  MOCK_METHOD(ObjectWriter*, RenderUint64, (StringPiece, uint64),
+  MOCK_METHOD(ObjectWriter*, RenderUint64, (StringPiece, uint64_t),
               (override));
   MOCK_METHOD(ObjectWriter*, RenderDouble, (StringPiece, double),
               (override));
@@ -139,41 +141,41 @@ class ExpectingObjectWriter : public ObjectWriter {
     return this;
   }
 
-  virtual ObjectWriter* RenderInt32(StringPiece name, int32 value) {
+  virtual ObjectWriter* RenderInt32(StringPiece name, int32_t value) {
     (name.empty()
-         ? EXPECT_CALL(*mock_, RenderInt32(IsEmpty(), TypedEq<int32>(value)))
+         ? EXPECT_CALL(*mock_, RenderInt32(IsEmpty(), TypedEq<int32_t>(value)))
          : EXPECT_CALL(*mock_, RenderInt32(Eq(std::string(name)),
-                                           TypedEq<int32>(value))))
+                                           TypedEq<int32_t>(value))))
         .WillOnce(Return(mock_))
         .RetiresOnSaturation();
     return this;
   }
 
-  virtual ObjectWriter* RenderUint32(StringPiece name, uint32 value) {
-    (name.empty()
-         ? EXPECT_CALL(*mock_, RenderUint32(IsEmpty(), TypedEq<uint32>(value)))
-         : EXPECT_CALL(*mock_, RenderUint32(Eq(std::string(name)),
-                                            TypedEq<uint32>(value))))
+  virtual ObjectWriter* RenderUint32(StringPiece name, uint32_t value) {
+    (name.empty() ? EXPECT_CALL(*mock_, RenderUint32(IsEmpty(),
+                                                     TypedEq<uint32_t>(value)))
+                  : EXPECT_CALL(*mock_, RenderUint32(Eq(std::string(name)),
+                                                     TypedEq<uint32_t>(value))))
         .WillOnce(Return(mock_))
         .RetiresOnSaturation();
     return this;
   }
 
-  virtual ObjectWriter* RenderInt64(StringPiece name, int64 value) {
+  virtual ObjectWriter* RenderInt64(StringPiece name, int64_t value) {
     (name.empty()
-         ? EXPECT_CALL(*mock_, RenderInt64(IsEmpty(), TypedEq<int64>(value)))
+         ? EXPECT_CALL(*mock_, RenderInt64(IsEmpty(), TypedEq<int64_t>(value)))
          : EXPECT_CALL(*mock_, RenderInt64(Eq(std::string(name)),
-                                           TypedEq<int64>(value))))
+                                           TypedEq<int64_t>(value))))
         .WillOnce(Return(mock_))
         .RetiresOnSaturation();
     return this;
   }
 
-  virtual ObjectWriter* RenderUint64(StringPiece name, uint64 value) {
-    (name.empty()
-         ? EXPECT_CALL(*mock_, RenderUint64(IsEmpty(), TypedEq<uint64>(value)))
-         : EXPECT_CALL(*mock_, RenderUint64(Eq(std::string(name)),
-                                            TypedEq<uint64>(value))))
+  virtual ObjectWriter* RenderUint64(StringPiece name, uint64_t value) {
+    (name.empty() ? EXPECT_CALL(*mock_, RenderUint64(IsEmpty(),
+                                                     TypedEq<uint64_t>(value)))
+                  : EXPECT_CALL(*mock_, RenderUint64(Eq(std::string(name)),
+                                                     TypedEq<uint64_t>(value))))
         .WillOnce(Return(mock_))
         .RetiresOnSaturation();
     return this;

src/google/protobuf/util/internal/json_escaping.cc

@@ -30,6 +30,8 @@
 
 #include <google/protobuf/util/internal/json_escaping.h>
 
+#include <cstdint>
+
 #include <google/protobuf/stubs/logging.h>
 #include <google/protobuf/stubs/common.h>
 
@@ -77,7 +79,7 @@ static const char kCommonEscapes[160][7] = {
 
 // Determines if the given char value is a unicode surrogate code unit (either
 // high-surrogate or low-surrogate).
-inline bool IsSurrogate(uint32 c) {
+inline bool IsSurrogate(uint32_t c) {
   // Optimized form of:
   // return c >= kMinHighSurrogate && c <= kMaxLowSurrogate;
   // (Reduced from 3 ALU instructions to 2 ALU instructions)
@@ -86,13 +88,13 @@ inline bool IsSurrogate(uint32 c) {
 
 // Returns true if the given unicode code point cp is a valid
 // unicode code point (i.e. in the range 0 <= cp <= kMaxCodePoint).
-inline bool IsValidCodePoint(uint32 cp) {
+inline bool IsValidCodePoint(uint32_t cp) {
   return cp <= JsonEscaping::kMaxCodePoint;
 }
 
 // Returns the low surrogate for the given unicode code point. The result is
 // meaningless if the given code point is not a supplementary character.
-inline uint16 ToLowSurrogate(uint32 cp) {
+inline uint16_t ToLowSurrogate(uint32_t cp) {
   return (cp &
           (JsonEscaping::kMaxLowSurrogate - JsonEscaping::kMinLowSurrogate)) +
          JsonEscaping::kMinLowSurrogate;
@@ -100,7 +102,7 @@ inline uint16 ToLowSurrogate(uint32 cp) {
 
 // Returns the high surrogate for the given unicode code point. The result is
 // meaningless if the given code point is not a supplementary character.
-inline uint16 ToHighSurrogate(uint32 cp) {
+inline uint16_t ToHighSurrogate(uint32_t cp) {
   return (cp >> 10) + (JsonEscaping::kMinHighSurrogate -
                        (JsonEscaping::kMinSupplementaryCodePoint >> 10));
 }
@@ -125,11 +127,11 @@ inline uint16 ToHighSurrogate(uint32 cp) {
 // Returns false if we encounter an invalid UTF-8 string. Returns true
 // otherwise, including the case when we reach the end of the input (str)
 // before a complete unicode code point is read.
-bool ReadCodePoint(StringPiece str, int index, uint32* cp, int* num_left,
-                   int* num_read) {
+bool ReadCodePoint(StringPiece str, int index, uint32_t* cp,
+                   int* num_left, int* num_read) {
   if (*num_left == 0) {
     // Last read was complete. Start reading a new unicode code point.
-    *cp = static_cast<uint8>(str[index++]);
+    *cp = static_cast<uint8_t>(str[index++]);
     *num_read = 1;
     // The length of the code point is determined from reading the first byte.
     //
@@ -178,7 +180,7 @@ bool ReadCodePoint(StringPiece str, int index, uint32* cp, int* num_left,
     *num_read = 0;
   }
   while (*num_left > 0 && index < str.size()) {
-    uint32 ch = static_cast<uint8>(str[index++]);
+    uint32_t ch = static_cast<uint8_t>(str[index++]);
     --(*num_left);
     ++(*num_read);
     *cp = (*cp << 6) | (ch & 0x3f);
@@ -190,7 +192,7 @@ bool ReadCodePoint(StringPiece str, int index, uint32* cp, int* num_left,
 // Stores the 16-bit unicode code point as its hexadecimal digits in buffer
 // and returns a StringPiece that points to this buffer. The input buffer needs
 // to be at least 6 bytes long.
-StringPiece ToHex(uint16 cp, char* buffer) {
+StringPiece ToHex(uint16_t cp, char* buffer) {
   buffer[5] = kHex[cp & 0x0f];
   cp >>= 4;
   buffer[4] = kHex[cp & 0x0f];
@@ -204,9 +206,9 @@ StringPiece ToHex(uint16 cp, char* buffer) {
 // Stores the 32-bit unicode code point as its hexadecimal digits in buffer
 // and returns a StringPiece that points to this buffer. The input buffer needs
 // to be at least 12 bytes long.
-StringPiece ToSurrogateHex(uint32 cp, char* buffer) {
-  uint16 low = ToLowSurrogate(cp);
-  uint16 high = ToHighSurrogate(cp);
+StringPiece ToSurrogateHex(uint32_t cp, char* buffer) {
+  uint16_t low = ToLowSurrogate(cp);
+  uint16_t high = ToHighSurrogate(cp);
 
   buffer[11] = kHex[low & 0x0f];
   low >>= 4;
@@ -234,7 +236,7 @@ StringPiece ToSurrogateHex(uint32 cp, char* buffer) {
 //
 // If the given unicode code point does not need escaping, an empty
 // StringPiece is returned.
-StringPiece EscapeCodePoint(uint32 cp, char* buffer) {
+StringPiece EscapeCodePoint(uint32_t cp, char* buffer) {
   if (cp < 0xa0) return kCommonEscapes[cp];
   switch (cp) {
     // These are not required by json spec
@@ -272,7 +274,8 @@ StringPiece EscapeCodePoint(uint32 cp, char* buffer) {
 // Tries to escape the given code point first. If the given code point
 // does not need to be escaped, but force_output is true, then render
 // the given multi-byte code point in UTF8 in the buffer and returns it.
-StringPiece EscapeCodePoint(uint32 cp, char* buffer, bool force_output) {
+StringPiece EscapeCodePoint(uint32_t cp, char* buffer,
+                                  bool force_output) {
   StringPiece sp = EscapeCodePoint(cp, buffer);
   if (force_output && sp.empty()) {
     buffer[5] = (cp & 0x3f) | 0x80;
@@ -301,7 +304,7 @@ StringPiece EscapeCodePoint(uint32 cp, char* buffer, bool force_output) {
 void JsonEscaping::Escape(strings::ByteSource* input,
                           strings::ByteSink* output) {
   char buffer[12] = "\\udead\\ubee";
-  uint32 cp = 0;     // Current unicode code point.
+  uint32_t cp = 0;   // Current unicode code point.
   int num_left = 0;  // Num of chars to read to complete the code point.
   while (input->Available() > 0) {
     StringPiece str = input->Peek();

src/google/protobuf/util/internal/json_escaping.h

@@ -31,6 +31,8 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_INTERNAL__JSON_ESCAPING_H__
 #define GOOGLE_PROTOBUF_UTIL_INTERNAL__JSON_ESCAPING_H__
 
+#include <cstdint>
+
 #include <google/protobuf/stubs/common.h>
 #include <google/protobuf/stubs/bytestream.h>
 
@@ -44,34 +46,34 @@ class JsonEscaping {
   // The minimum value of a unicode high-surrogate code unit in the utf-16
   // encoding. A high-surrogate is also known as a leading-surrogate.
   // See http://www.unicode.org/glossary/#high_surrogate_code_unit
-  static constexpr uint16 kMinHighSurrogate = 0xd800;
+  static constexpr uint16_t kMinHighSurrogate = 0xd800;
 
   // The maximum value of a unicide high-surrogate code unit in the utf-16
   // encoding. A high-surrogate is also known as a leading-surrogate.
   // See http://www.unicode.org/glossary/#high_surrogate_code_unit
-  static constexpr uint16 kMaxHighSurrogate = 0xdbff;
+  static constexpr uint16_t kMaxHighSurrogate = 0xdbff;
 
   // The minimum value of a unicode low-surrogate code unit in the utf-16
   // encoding. A low-surrogate is also known as a trailing-surrogate.
   // See http://www.unicode.org/glossary/#low_surrogate_code_unit
-  static constexpr uint16 kMinLowSurrogate = 0xdc00;
+  static constexpr uint16_t kMinLowSurrogate = 0xdc00;
 
   // The maximum value of a unicode low-surrogate code unit in the utf-16
   // encoding. A low-surrogate is also known as a trailing surrogate.
   // See http://www.unicode.org/glossary/#low_surrogate_code_unit
-  static constexpr uint16 kMaxLowSurrogate = 0xdfff;
+  static constexpr uint16_t kMaxLowSurrogate = 0xdfff;
 
   // The minimum value of a unicode supplementary code point.
   // See http://www.unicode.org/glossary/#supplementary_code_point
-  static constexpr uint32 kMinSupplementaryCodePoint = 0x010000;
+  static constexpr uint32_t kMinSupplementaryCodePoint = 0x010000;
 
   // The minimum value of a unicode code point.
   // See http://www.unicode.org/glossary/#code_point
-  static constexpr uint32 kMinCodePoint = 0x000000;
+  static constexpr uint32_t kMinCodePoint = 0x000000;
 
   // The maximum value of a unicode code point.
   // See http://www.unicode.org/glossary/#code_point
-  static constexpr uint32 kMaxCodePoint = 0x10ffff;
+  static constexpr uint32_t kMaxCodePoint = 0x10ffff;
 
   JsonEscaping() {}
   virtual ~JsonEscaping() {}

src/google/protobuf/util/internal/json_objectwriter.cc

@@ -31,6 +31,7 @@
 #include <google/protobuf/util/internal/json_objectwriter.h>
 
 #include <cmath>
+#include <cstdint>
 #include <limits>
 
 #include <google/protobuf/stubs/casts.h>
@@ -86,17 +87,17 @@ JsonObjectWriter* JsonObjectWriter::RenderBool(StringPiece name,
 }
 
 JsonObjectWriter* JsonObjectWriter::RenderInt32(StringPiece name,
-                                                int32 value) {
+                                                int32_t value) {
   return RenderSimple(name, StrCat(value));
 }
 
 JsonObjectWriter* JsonObjectWriter::RenderUint32(StringPiece name,
-                                                 uint32 value) {
+                                                 uint32_t value) {
   return RenderSimple(name, StrCat(value));
 }
 
 JsonObjectWriter* JsonObjectWriter::RenderInt64(StringPiece name,
-                                                int64 value) {
+                                                int64_t value) {
   WritePrefix(name);
   WriteChar('"');
   WriteRawString(StrCat(value));
@@ -105,7 +106,7 @@ JsonObjectWriter* JsonObjectWriter::RenderInt64(StringPiece name,
 }
 
 JsonObjectWriter* JsonObjectWriter::RenderUint64(StringPiece name,
-                                                 uint64 value) {
+                                                 uint64_t value) {
   WritePrefix(name);
   WriteChar('"');
   WriteRawString(StrCat(value));

src/google/protobuf/util/internal/json_objectwriter.h

@@ -31,6 +31,7 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_JSON_OBJECTWRITER_H__
 #define GOOGLE_PROTOBUF_UTIL_CONVERTER_JSON_OBJECTWRITER_H__
 
+#include <cstdint>
 #include <memory>
 #include <string>
 
@@ -118,10 +119,12 @@ class PROTOBUF_EXPORT JsonObjectWriter : public StructuredObjectWriter {
   JsonObjectWriter* StartList(StringPiece name) override;
   JsonObjectWriter* EndList() override;
   JsonObjectWriter* RenderBool(StringPiece name, bool value) override;
-  JsonObjectWriter* RenderInt32(StringPiece name, int32 value) override;
-  JsonObjectWriter* RenderUint32(StringPiece name, uint32 value) override;
-  JsonObjectWriter* RenderInt64(StringPiece name, int64 value) override;
-  JsonObjectWriter* RenderUint64(StringPiece name, uint64 value) override;
+  JsonObjectWriter* RenderInt32(StringPiece name, int32_t value) override;
+  JsonObjectWriter* RenderUint32(StringPiece name,
+                                 uint32_t value) override;
+  JsonObjectWriter* RenderInt64(StringPiece name, int64_t value) override;
+  JsonObjectWriter* RenderUint64(StringPiece name,
+                                 uint64_t value) override;
   JsonObjectWriter* RenderDouble(StringPiece name, double value) override;
   JsonObjectWriter* RenderFloat(StringPiece name, float value) override;
   JsonObjectWriter* RenderString(StringPiece name,
@@ -218,7 +221,7 @@ class PROTOBUF_EXPORT JsonObjectWriter : public StructuredObjectWriter {
       // Take the slow-path if we don't have sufficient characters remaining in
       // our buffer or we have a non-trivial indent string which would prevent
       // us from using memset.
-      uint8* out = nullptr;
+      uint8_t* out = nullptr;
       if (indent_count_ > 0) {
         out = stream_->GetDirectBufferForNBytesAndAdvance(len);
       }

src/google/protobuf/util/internal/json_objectwriter_test.cc

@@ -30,6 +30,8 @@
 
 #include <google/protobuf/util/internal/json_objectwriter.h>
 
+#include <cstdint>
+
 #include <google/protobuf/io/zero_copy_stream_impl_lite.h>
 #include <google/protobuf/util/internal/utility.h>
 #include <gtest/gtest.h>
@@ -147,8 +149,8 @@ TEST_F(JsonObjectWriterTest, RenderPrimitives) {
       ->RenderBool("bool", true)
       ->RenderDouble("double", std::numeric_limits<double>::max())
       ->RenderFloat("float", std::numeric_limits<float>::max())
-      ->RenderInt32("int", std::numeric_limits<int32>::min())
-      ->RenderInt64("long", std::numeric_limits<int64>::min())
+      ->RenderInt32("int", std::numeric_limits<int32_t>::min())
+      ->RenderInt64("long", std::numeric_limits<int64_t>::min())
       ->RenderBytes("bytes", "abracadabra")
       ->RenderString("string", "string")
       ->RenderBytes("emptybytes", "")

src/google/protobuf/util/internal/json_stream_parser.cc

@@ -32,16 +32,15 @@
 
 #include <algorithm>
 #include <cctype>
-#include <cerrno>
 #include <cmath>
-#include <cstdlib>
-#include <cstring>
-#include <limits>
 #include <memory>
+#include <stack>
+#include <string>
 
-#include <google/protobuf/stubs/logging.h>
 #include <google/protobuf/stubs/common.h>
+#include <google/protobuf/stubs/logging.h>
 #include <google/protobuf/stubs/strutil.h>
+#include <google/protobuf/stubs/status.h>
 #include <google/protobuf/util/internal/object_writer.h>
 #include <google/protobuf/util/internal/json_escaping.h>
 
@@ -50,14 +49,6 @@ namespace google {
 namespace protobuf {
 namespace util {
 
-// Allow these symbols to be referenced as util::Status, util::error::* in
-// this file.
-namespace error {
-using util::error::CANCELLED;
-using util::error::INTERNAL;
-using util::error::INVALID_ARGUMENT;
-}  // namespace error
-
 namespace converter {
 
 // Number of digits in an escaped UTF-16 code unit ('\\' 'u' X X X X)
@@ -146,6 +137,8 @@ JsonStreamParser::JsonStreamParser(ObjectWriter* ow)
       key_(),
       key_storage_(),
       finishing_(false),
+      seen_non_whitespace_(false),
+      allow_no_root_element_(false),
       parsed_(),
       parsed_storage_(),
       string_open_(0),
@@ -214,7 +207,8 @@ util::Status JsonStreamParser::FinishParse() {
   } else {
     p_ = json_ = leftover_;
     if (!is_valid_utf8) {
-      return ReportFailure("Encountered non UTF-8 code points.");
+      return ReportFailure("Encountered non UTF-8 code points.",
+                           ParseErrorType::NON_UTF_8);
     }
   }
 
@@ -225,7 +219,9 @@ util::Status JsonStreamParser::FinishParse() {
   if (result.ok()) {
     SkipWhitespace();
     if (!p_.empty()) {
-      result = ReportFailure("Parsing terminated before end of input.");
+      result =
+          ReportFailure("Parsing terminated before end of input.",
+                        ParseErrorType::PARSING_TERMINATED_BEFORE_END_OF_INPUT);
     }
   }
   return result;
@@ -249,7 +245,9 @@ util::Status JsonStreamParser::ParseChunk(StringPiece chunk) {
     // If we do not expect anything i.e. stack is empty, and we have non-empty
     // string left to parse, we report an error.
     if (stack_.empty()) {
-      return ReportFailure("Parsing terminated before end of input.");
+      return ReportFailure(
+          "Parsing terminated before end of input.",
+          ParseErrorType::PARSING_TERMINATED_BEFORE_END_OF_INPUT);
     }
     // If we expect future data i.e. stack is non-empty, and we have some
     // unparsed data left, we save it for later parse.
@@ -258,6 +256,17 @@ util::Status JsonStreamParser::ParseChunk(StringPiece chunk) {
   return util::Status();
 }
 
+bool JsonStreamParser::IsInputAllWhiteSpaces(TokenType type) {
+  // Conclude the whole input is full of white spaces by:
+  // - it is at the finishing stage
+  // - we have run out of the input data
+  // - haven't seen non-whitespace char so far
+  if (finishing_ && p_.empty() && type == UNKNOWN && !seen_non_whitespace_) {
+    return true;
+  }
+  return false;
+}
+
 util::Status JsonStreamParser::RunParser() {
   while (!stack_.empty()) {
     ParseType type = stack_.top();
@@ -266,6 +275,9 @@ util::Status JsonStreamParser::RunParser() {
     util::Status result;
     switch (type) {
       case VALUE:
+        if (allow_no_root_element_ && IsInputAllWhiteSpaces(t)) {
+          return util::Status();
+        }
         result = ParseValue(t);
         break;
 
@@ -330,7 +342,7 @@ util::Status JsonStreamParser::ParseValue(TokenType type) {
     case BEGIN_NULL:
       return ParseNull();
     case UNKNOWN:
-      return ReportUnknown("Expected a value.");
+      return ReportUnknown("Expected a value.", ParseErrorType::EXPECTED_VALUE);
     default: {
       if (allow_empty_null_ && IsEmptyNullAllowed(type)) {
         return ParseEmptyNull();
@@ -343,7 +355,8 @@ util::Status JsonStreamParser::ParseValue(TokenType type) {
       if (!finishing_ && p_.length() < kKeywordFalse.length()) {
         return util::Status(util::error::CANCELLED, "");
       }
-      return ReportFailure("Unexpected token.");
+      return ReportFailure("Unexpected token.",
+                           ParseErrorType::UNEXPECTED_TOKEN);
     }
   }
 }
@@ -381,7 +394,8 @@ util::Status JsonStreamParser::ParseStringHelper() {
         if (!finishing_) {
           return util::Status(util::error::CANCELLED, "");
         }
-        return ReportFailure("Closing quote expected in string.");
+        return ReportFailure("Closing quote expected in string.",
+                             ParseErrorType::EXPECTED_CLOSING_QUOTE);
       }
       // Parse a unicode escape if we found \u in the string.
       if (data[1] == 'u') {
@@ -451,7 +465,8 @@ util::Status JsonStreamParser::ParseStringHelper() {
   }
   // End of string reached without a closing quote, report an error.
   string_open_ = 0;
-  return ReportFailure("Closing quote expected in string.");
+  return ReportFailure("Closing quote expected in string.",
+                       ParseErrorType::EXPECTED_CLOSING_QUOTE);
 }
 
 // Converts a unicode escaped character to a decimal value stored in a char32
@@ -466,14 +481,16 @@ util::Status JsonStreamParser::ParseUnicodeEscape() {
     if (!finishing_) {
       return util::Status(util::error::CANCELLED, "");
     }
-    return ReportFailure("Illegal hex string.");
+    return ReportFailure("Illegal hex string.",
+                         ParseErrorType::ILLEGAL_HEX_STRING);
   }
   GOOGLE_DCHECK_EQ('\\', p_.data()[0]);
   GOOGLE_DCHECK_EQ('u', p_.data()[1]);
   uint32 code = 0;
   for (int i = 2; i < kUnicodeEscapedLength; ++i) {
     if (!isxdigit(p_.data()[i])) {
-      return ReportFailure("Invalid escape sequence.");
+      return ReportFailure("Invalid escape sequence.",
+                           ParseErrorType::INVALID_ESCAPE_SEQUENCE);
     }
     code = (code << 4) + hex_digit_to_int(p_.data()[i]);
   }
@@ -484,7 +501,8 @@ util::Status JsonStreamParser::ParseUnicodeEscape() {
         return util::Status(util::error::CANCELLED, "");
       }
       if (!coerce_to_utf8_) {
-        return ReportFailure("Missing low surrogate.");
+        return ReportFailure("Missing low surrogate.",
+                             ParseErrorType::MISSING_LOW_SURROGATE);
       }
     } else if (p_.data()[kUnicodeEscapedLength] == '\\' &&
                p_.data()[kUnicodeEscapedLength + 1] == 'u') {
@@ -492,7 +510,8 @@ util::Status JsonStreamParser::ParseUnicodeEscape() {
       for (int i = kUnicodeEscapedLength + 2; i < 2 * kUnicodeEscapedLength;
            ++i) {
         if (!isxdigit(p_.data()[i])) {
-          return ReportFailure("Invalid escape sequence.");
+          return ReportFailure("Invalid escape sequence.",
+                               ParseErrorType::INVALID_ESCAPE_SEQUENCE);
         }
         low_code = (low_code << 4) + hex_digit_to_int(p_.data()[i]);
       }
@@ -504,14 +523,17 @@ util::Status JsonStreamParser::ParseUnicodeEscape() {
         // Advance past the first code unit escape.
         p_.remove_prefix(kUnicodeEscapedLength);
       } else if (!coerce_to_utf8_) {
-        return ReportFailure("Invalid low surrogate.");
+        return ReportFailure("Invalid low surrogate.",
+                             ParseErrorType::INVALID_LOW_SURROGATE);
       }
     } else if (!coerce_to_utf8_) {
-      return ReportFailure("Missing low surrogate.");
+      return ReportFailure("Missing low surrogate.",
+                           ParseErrorType::MISSING_LOW_SURROGATE);
     }
   }
   if (!coerce_to_utf8_ && !IsValidCodePoint(code)) {
-    return ReportFailure("Invalid unicode code point.");
+    return ReportFailure("Invalid unicode code point.",
+                         ParseErrorType::INVALID_UNICODE);
   }
   char buf[UTFmax];
   int len = EncodeAsUTF8Char(code, buf);
@@ -542,7 +564,8 @@ util::Status JsonStreamParser::ParseNumber() {
         break;
 
       default:
-        return ReportFailure("Unable to parse number.");
+        return ReportFailure("Unable to parse number.",
+                             ParseErrorType::UNABLE_TO_PARSE_NUMBER);
     }
   }
   return result;
@@ -551,10 +574,12 @@ util::Status JsonStreamParser::ParseNumber() {
 util::Status JsonStreamParser::ParseDoubleHelper(const std::string& number,
                                                  NumberResult* result) {
   if (!safe_strtod(number, &result->double_val)) {
-    return ReportFailure("Unable to parse number.");
+    return ReportFailure("Unable to parse number.",
+                         ParseErrorType::UNABLE_TO_PARSE_NUMBER);
   }
   if (!loose_float_number_conversion_ && !std::isfinite(result->double_val)) {
-    return ReportFailure("Number exceeds the range of double.");
+    return ReportFailure("Number exceeds the range of double.",
+                         ParseErrorType::NUMBER_EXCEEDS_RANGE_DOUBLE);
   }
   result->type = NumberResult::DOUBLE;
   return util::Status();
@@ -606,7 +631,9 @@ util::Status JsonStreamParser::ParseNumberHelper(NumberResult* result) {
   if (!negative) {
     // Octal/Hex numbers are not valid JSON values.
     if (number.length() >= 2 && number[0] == '0') {
-      return ReportFailure("Octal/hex numbers are not valid JSON values.");
+      return ReportFailure(
+          "Octal/hex numbers are not valid JSON values.",
+          ParseErrorType::OCTAL_OR_HEX_ARE_NOT_VALID_JSON_VALUES);
     }
     if (safe_strtou64(number, &result->uint_val)) {
       result->type = NumberResult::UINT;
@@ -624,7 +651,9 @@ util::Status JsonStreamParser::ParseNumberHelper(NumberResult* result) {
 
   // Octal/Hex numbers are not valid JSON values.
   if (number.length() >= 3 && number[1] == '0') {
-    return ReportFailure("Octal/hex numbers are not valid JSON values.");
+    return ReportFailure(
+        "Octal/hex numbers are not valid JSON values.",
+        ParseErrorType::OCTAL_OR_HEX_ARE_NOT_VALID_JSON_VALUES);
   }
   // Negative non-floating point number, parse as an int64.
   if (safe_strto64(number, &result->int_val)) {
@@ -656,7 +685,8 @@ util::Status JsonStreamParser::HandleBeginObject() {
 
 util::Status JsonStreamParser::ParseObjectMid(TokenType type) {
   if (type == UNKNOWN) {
-    return ReportUnknown("Expected , or } after key:value pair.");
+    return ReportUnknown("Expected , or } after key:value pair.",
+                         ParseErrorType::EXPECTED_COMMA_OR_BRACES);
   }
 
   // Object is complete, advance past the comma and render the EndObject.
@@ -673,12 +703,14 @@ util::Status JsonStreamParser::ParseObjectMid(TokenType type) {
     return util::Status();
   }
   // Illegal token after key:value pair.
-  return ReportFailure("Expected , or } after key:value pair.");
+  return ReportFailure("Expected , or } after key:value pair.",
+                       ParseErrorType::EXPECTED_COMMA_OR_BRACES);
 }
 
 util::Status JsonStreamParser::ParseEntry(TokenType type) {
   if (type == UNKNOWN) {
-    return ReportUnknown("Expected an object key or }.");
+    return ReportUnknown("Expected an object key or }.",
+                         ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 
   // Close the object and return. This allows for trailing commas.
@@ -711,11 +743,13 @@ util::Status JsonStreamParser::ParseEntry(TokenType type) {
     result = ParseKey();
     if (result.ok() && (key_ == kKeywordNull || key_ == kKeywordTrue ||
                         key_ == kKeywordFalse)) {
-      result = ReportFailure("Expected an object key or }.");
+      result = ReportFailure("Expected an object key or }.",
+                             ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
     }
   } else {
     // Unknown key type, report an error.
-    result = ReportFailure("Expected an object key or }.");
+    result = ReportFailure("Expected an object key or }.",
+                           ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
   // On success we next expect an entry mid ':' then an object mid ',' or '}'
   if (result.ok()) {
@@ -727,14 +761,16 @@ util::Status JsonStreamParser::ParseEntry(TokenType type) {
 
 util::Status JsonStreamParser::ParseEntryMid(TokenType type) {
   if (type == UNKNOWN) {
-    return ReportUnknown("Expected : between key:value pair.");
+    return ReportUnknown("Expected : between key:value pair.",
+                         ParseErrorType::EXPECTED_COLON);
   }
   if (type == ENTRY_SEPARATOR) {
     Advance();
     stack_.push(VALUE);
     return util::Status();
   }
-  return ReportFailure("Expected : between key:value pair.");
+  return ReportFailure("Expected : between key:value pair.",
+                       ParseErrorType::EXPECTED_COLON);
 }
 
 util::Status JsonStreamParser::HandleBeginArray() {
@@ -748,7 +784,8 @@ util::Status JsonStreamParser::HandleBeginArray() {
 
 util::Status JsonStreamParser::ParseArrayValue(TokenType type) {
   if (type == UNKNOWN) {
-    return ReportUnknown("Expected a value or ] within an array.");
+    return ReportUnknown("Expected a value or ] within an array.",
+                         ParseErrorType::EXPECTED_VALUE_OR_BRACKET);
   }
 
   if (type == END_ARRAY) {
@@ -772,7 +809,8 @@ util::Status JsonStreamParser::ParseArrayValue(TokenType type) {
 
 util::Status JsonStreamParser::ParseArrayMid(TokenType type) {
   if (type == UNKNOWN) {
-    return ReportUnknown("Expected , or ] after array value.");
+    return ReportUnknown("Expected , or ] after array value.",
+                         ParseErrorType::EXPECTED_COMMA_OR_BRACKET);
   }
 
   if (type == END_ARRAY) {
@@ -788,7 +826,8 @@ util::Status JsonStreamParser::ParseArrayMid(TokenType type) {
     return util::Status();
   }
   // Illegal token after array value.
-  return ReportFailure("Expected , or ] after array value.");
+  return ReportFailure("Expected , or ] after array value.",
+                       ParseErrorType::EXPECTED_COMMA_OR_BRACKET);
 }
 
 util::Status JsonStreamParser::ParseTrue() {
@@ -824,7 +863,8 @@ bool JsonStreamParser::IsEmptyNullAllowed(TokenType type) {
          stack_.top() == OBJ_MID;
 }
 
-util::Status JsonStreamParser::ReportFailure(StringPiece message) {
+util::Status JsonStreamParser::ReportFailure(StringPiece message,
+                                             ParseErrorType parse_code) {
   static const int kContextLength = 20;
   const char* p_start = p_.data();
   const char* json_start = json_.data();
@@ -834,19 +874,24 @@ util::Status JsonStreamParser::ReportFailure(StringPiece message) {
   StringPiece segment(begin, end - begin);
   std::string location(p_start - begin, ' ');
   location.push_back('^');
-  return util::Status(util::error::INVALID_ARGUMENT,
-                      StrCat(message, "\n", segment, "\n", location));
+  auto status =
+      util::Status(util::error::INVALID_ARGUMENT,
+                   StrCat(message, "\n", segment, "\n", location));
+
+  return status;
 }
 
-util::Status JsonStreamParser::ReportUnknown(StringPiece message) {
+util::Status JsonStreamParser::ReportUnknown(StringPiece message,
+                                             ParseErrorType parse_code) {
   // If we aren't finishing the parse, cancel parsing and try later.
   if (!finishing_) {
     return util::Status(util::error::CANCELLED, "");
   }
   if (p_.empty()) {
-    return ReportFailure(StrCat("Unexpected end of string. ", message));
+    return ReportFailure(StrCat("Unexpected end of string. ", message),
+                         parse_code);
   }
-  return ReportFailure(message);
+  return ReportFailure(message, parse_code);
 }
 
 util::Status JsonStreamParser::IncrementRecursionDepth(
@@ -864,6 +909,9 @@ void JsonStreamParser::SkipWhitespace() {
   while (!p_.empty() && ascii_isspace(*p_.data())) {
     Advance();
   }
+  if (!p_.empty() && !ascii_isspace(*p_.data())) {
+    seen_non_whitespace_ = true;
+  }
 }
 
 void JsonStreamParser::Advance() {
@@ -878,11 +926,13 @@ util::Status JsonStreamParser::ParseKey() {
 
   if (allow_permissive_key_naming_) {
     if (!ConsumeKeyPermissive(&p_, &key_)) {
-      return ReportFailure("Invalid key or variable name.");
+      return ReportFailure("Invalid key or variable name.",
+                           ParseErrorType::INVALID_KEY_OR_VARIABLE_NAME);
     }
   } else {
     if (!ConsumeKey(&p_, &key_)) {
-      return ReportFailure("Invalid key or variable name.");
+      return ReportFailure("Invalid key or variable name.",
+                           ParseErrorType::INVALID_KEY_OR_VARIABLE_NAME);
     }
   }
 

src/google/protobuf/util/internal/json_stream_parser.h

@@ -31,6 +31,7 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_JSON_STREAM_PARSER_H__
 #define GOOGLE_PROTOBUF_UTIL_CONVERTER_JSON_STREAM_PARSER_H__
 
+#include <cstdint>
 #include <stack>
 #include <string>
 
@@ -46,6 +47,7 @@ namespace protobuf {
 namespace util {
 namespace converter {
 
+
 class ObjectWriter;
 
 // A JSON parser that can parse a stream of JSON chunks rather than needing the
@@ -74,11 +76,17 @@ class PROTOBUF_EXPORT JsonStreamParser {
   explicit JsonStreamParser(ObjectWriter* ow);
   virtual ~JsonStreamParser();
 
-  // Parses a UTF-8 encoded JSON string from a StringPiece.
+  // Parses a UTF-8 encoded JSON string from a StringPiece. If the returned
+  // status is non-ok, the status might contain a payload ParseErrorType with
+  // type_url kParseErrorTypeUrl and a payload containing string snippet of the
+  // error with type_url kParseErrorSnippetUrl.
   util::Status Parse(StringPiece json);
 
 
-  // Finish parsing the JSON string.
+  // Finish parsing the JSON string. If the returned status is non-ok, the
+  // status might contain a payload ParseErrorType with type_url
+  // kParseErrorTypeUrl and a payload containing string snippet of the error
+  // with type_url kParseErrorSnippetUrl.
   util::Status FinishParse();
 
 
@@ -89,6 +97,30 @@ class PROTOBUF_EXPORT JsonStreamParser {
     max_recursion_depth_ = max_depth;
   }
 
+  // Denotes the cause of error.
+  enum ParseErrorType {
+    UNKNOWN_PARSE_ERROR,
+    OCTAL_OR_HEX_ARE_NOT_VALID_JSON_VALUES,
+    EXPECTED_COLON,
+    EXPECTED_COMMA_OR_BRACKET,
+    EXPECTED_VALUE,
+    EXPECTED_COMMA_OR_BRACES,
+    EXPECTED_OBJECT_KEY_OR_BRACES,
+    EXPECTED_VALUE_OR_BRACKET,
+    INVALID_KEY_OR_VARIABLE_NAME,
+    NON_UTF_8,
+    PARSING_TERMINATED_BEFORE_END_OF_INPUT,
+    UNEXPECTED_TOKEN,
+    EXPECTED_CLOSING_QUOTE,
+    ILLEGAL_HEX_STRING,
+    INVALID_ESCAPE_SEQUENCE,
+    MISSING_LOW_SURROGATE,
+    INVALID_LOW_SURROGATE,
+    INVALID_UNICODE,
+    UNABLE_TO_PARSE_NUMBER,
+    NUMBER_EXCEEDS_RANGE_DOUBLE
+  };
+
  private:
   friend class JsonStreamParserTest;
   // Return the current recursion depth.
@@ -125,8 +157,8 @@ class PROTOBUF_EXPORT JsonStreamParser {
     Type type;
     union {
       double double_val;
-      int64 int_val;
-      uint64 uint_val;
+      int64_t int_val;
+      uint64_t uint_val;
     };
   };
 
@@ -198,13 +230,18 @@ class PROTOBUF_EXPORT JsonStreamParser {
   // Whether an empty-null is allowed in the current state.
   bool IsEmptyNullAllowed(TokenType type);
 
+  // Whether the whole input is all whitespaces.
+  bool IsInputAllWhiteSpaces(TokenType type);
+
   // Report a failure as a util::Status.
-  util::Status ReportFailure(StringPiece message);
+  util::Status ReportFailure(StringPiece message,
+                             ParseErrorType parse_code);
 
   // Report a failure due to an UNKNOWN token type. We check if we hit the
   // end of the stream and if we're finishing or not to detect what type of
   // status to return in this case.
-  util::Status ReportUnknown(StringPiece message);
+  util::Status ReportUnknown(StringPiece message,
+                             ParseErrorType parse_code);
 
   // Helper function to check recursion depth and increment it. It will return
   // Status::OK if the current depth is allowed. Otherwise an error is returned.
@@ -253,6 +290,15 @@ class PROTOBUF_EXPORT JsonStreamParser {
   // trying during the next chunk, but during FinishParse() it is an error.
   bool finishing_;
 
+  // Whether non whitespace tokens have been seen during parsing.
+  // It is used to handle the case of a pure whitespace stream input.
+  bool seen_non_whitespace_;
+
+  // The JsonStreamParser requires a root element by default and it will raise
+  // error if the root element is missing. If `allow_no_root_element_` is true,
+  // the JsonStreamParser can also handle this case.
+  bool allow_no_root_element_;
+
   // String we parsed during a call to ParseStringHelper().
   StringPiece parsed_;
 

src/google/protobuf/util/internal/json_stream_parser_test.cc

@@ -30,6 +30,8 @@
 
 #include <google/protobuf/util/internal/json_stream_parser.h>
 
+#include <cstdint>
+
 #include <google/protobuf/stubs/logging.h>
 #include <google/protobuf/stubs/common.h>
 #include <google/protobuf/util/internal/expecting_objectwriter.h>
@@ -42,11 +44,11 @@
 namespace google {
 namespace protobuf {
 namespace util {
-namespace error {
-using util::error::INVALID_ARGUMENT;
-}  // namespace error
 namespace converter {
 
+using ParseErrorType =
+    ::google::protobuf::util::converter::JsonStreamParser::ParseErrorType;
+
 
 // Tests for the JSON Stream Parser. These tests are intended to be
 // comprehensive and cover the following:
@@ -141,6 +143,17 @@ class JsonStreamParserTest : public ::testing::Test {
     EXPECT_EQ(error_prefix, error_message.substr(0, error_prefix.size()));
   }
 
+  void DoErrorTest(
+      StringPiece json, int split, StringPiece error_prefix,
+      ParseErrorType expected_parse_error_type,
+      std::function<void(JsonStreamParser*)> setup = [](JsonStreamParser* p) {
+      }) {
+    util::Status result = RunTest(json, split, setup);
+    EXPECT_EQ(util::error::INVALID_ARGUMENT, result.code());
+    StringPiece error_message(result.error_message());
+    EXPECT_EQ(error_prefix, error_message.substr(0, error_prefix.size()));
+  }
+
 
 #ifndef _MSC_VER
   // TODO(xiaofeng): We have to disable InSequence check for MSVC because it
@@ -233,7 +246,7 @@ TEST_F(JsonStreamParserTest, SimpleInt) {
 TEST_F(JsonStreamParserTest, SimpleNegativeInt) {
   StringPiece str = "-79497823553162765";
   for (int i = 0; i <= str.length(); ++i) {
-    ow_.RenderInt64("", int64{-79497823553162765});
+    ow_.RenderInt64("", int64_t{-79497823553162765});
     DoTest(str, i);
   }
 }
@@ -241,7 +254,7 @@ TEST_F(JsonStreamParserTest, SimpleNegativeInt) {
 TEST_F(JsonStreamParserTest, SimpleUnsignedInt) {
   StringPiece str = "11779497823553162765";
   for (int i = 0; i <= str.length(); ++i) {
-    ow_.RenderUint64("", uint64{11779497823553162765u});
+    ow_.RenderUint64("", uint64_t{11779497823553162765u});
     DoTest(str, i);
   }
 }
@@ -249,26 +262,31 @@ TEST_F(JsonStreamParserTest, SimpleUnsignedInt) {
 TEST_F(JsonStreamParserTest, OctalNumberIsInvalid) {
   StringPiece str = "01234";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Octal/hex numbers are not valid JSON values.");
+    DoErrorTest(str, i, "Octal/hex numbers are not valid JSON values.",
+                ParseErrorType::OCTAL_OR_HEX_ARE_NOT_VALID_JSON_VALUES);
   }
   str = "-01234";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Octal/hex numbers are not valid JSON values.");
+    DoErrorTest(str, i, "Octal/hex numbers are not valid JSON values.",
+                ParseErrorType::OCTAL_OR_HEX_ARE_NOT_VALID_JSON_VALUES);
   }
 }
 
 TEST_F(JsonStreamParserTest, HexNumberIsInvalid) {
   StringPiece str = "0x1234";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Octal/hex numbers are not valid JSON values.");
+    DoErrorTest(str, i, "Octal/hex numbers are not valid JSON values.",
+                ParseErrorType::OCTAL_OR_HEX_ARE_NOT_VALID_JSON_VALUES);
   }
   str = "-0x1234";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Octal/hex numbers are not valid JSON values.");
+    DoErrorTest(str, i, "Octal/hex numbers are not valid JSON values.",
+                ParseErrorType::OCTAL_OR_HEX_ARE_NOT_VALID_JSON_VALUES);
   }
   str = "12x34";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Unable to parse number.");
+    DoErrorTest(str, i, "Unable to parse number.",
+                ParseErrorType::UNABLE_TO_PARSE_NUMBER);
   }
 }
 
@@ -338,14 +356,16 @@ TEST_F(JsonStreamParserTest, UnquotedObjectKeyWithReservedPrefxes) {
 TEST_F(JsonStreamParserTest, UnquotedObjectKeyWithReservedKeyword) {
   StringPiece str = "{ null: \"a\", true: \"b\", false: \"c\"}";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Expected an object key or }.");
+    DoErrorTest(str, i, "Expected an object key or }.",
+                ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 }
 
 TEST_F(JsonStreamParserTest, UnquotedObjectKeyWithEmbeddedNonAlphanumeric) {
   StringPiece str = "{ foo-bar-baz: \"a\"}";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Expected : between key:value pair.");
+    DoErrorTest(str, i, "Expected : between key:value pair.",
+                ParseErrorType::EXPECTED_COLON);
   }
 }
 
@@ -376,7 +396,7 @@ TEST_F(JsonStreamParserTest, ArrayComplexValues) {
         ->RenderInt64("", -127)
         ->RenderDouble("", 45.3)
         ->RenderDouble("", -1056.4)
-        ->RenderUint64("", uint64{11779497823553162765u})
+        ->RenderUint64("", uint64_t{11779497823553162765u})
         ->EndList()
         ->StartObject("")
         ->RenderBool("key", true)
@@ -404,7 +424,7 @@ TEST_F(JsonStreamParserTest, ObjectValues) {
         ->RenderInt64("ni", -127)
         ->RenderDouble("pd", 45.3)
         ->RenderDouble("nd", -1056.4)
-        ->RenderUint64("pl", uint64{11779497823553162765u})
+        ->RenderUint64("pl", uint64_t{11779497823553162765u})
         ->StartList("l")
         ->StartList("")
         ->EndList()
@@ -421,13 +441,16 @@ TEST_F(JsonStreamParserTest, ObjectValues) {
 TEST_F(JsonStreamParserTest, RejectNonUtf8WhenNotCoerced) {
   StringPiece json = "{\"address\":\xFF\"חרושת 23, רעננה, ישראל\"}";
   for (int i = 0; i <= json.length(); ++i) {
-    DoErrorTest(json, i, "Encountered non UTF-8 code points.");
+    DoErrorTest(json, i, "Encountered non UTF-8 code points.",
+                ParseErrorType::NON_UTF_8);
   }
   json = "{\"address\": \"חרושת 23,\xFFרעננה, ישראל\"}";
   for (int i = 0; i <= json.length(); ++i) {
-    DoErrorTest(json, i, "Encountered non UTF-8 code points.");
+    DoErrorTest(json, i, "Encountered non UTF-8 code points.",
+                ParseErrorType::NON_UTF_8);
   }
-  DoErrorTest("\xFF{}", 0, "Encountered non UTF-8 code points.");
+  DoErrorTest("\xFF{}", 0, "Encountered non UTF-8 code points.",
+              ParseErrorType::NON_UTF_8);
 }
 
 // - unicode handling in strings
@@ -460,7 +483,8 @@ TEST_F(JsonStreamParserTest, UnicodeEscapingInvalidCodePointWhenNotCoerced) {
   // A low surrogate alone.
   StringPiece str = "[\"\\ude36\"]";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Invalid unicode code point.");
+    DoErrorTest(str, i, "Invalid unicode code point.",
+                ParseErrorType::INVALID_UNICODE);
   }
 }
 
@@ -468,22 +492,26 @@ TEST_F(JsonStreamParserTest, UnicodeEscapingMissingLowSurrogateWhenNotCoerced) {
   // A high surrogate alone.
   StringPiece str = "[\"\\ud83d\"]";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Missing low surrogate.");
+    DoErrorTest(str, i, "Missing low surrogate.",
+                ParseErrorType::MISSING_LOW_SURROGATE);
   }
   // A high surrogate with some trailing characters.
   str = "[\"\\ud83d|ude36\"]";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Missing low surrogate.");
+    DoErrorTest(str, i, "Missing low surrogate.",
+                ParseErrorType::MISSING_LOW_SURROGATE);
   }
   // A high surrogate with half a low surrogate.
   str = "[\"\\ud83d\\ude--\"]";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Invalid escape sequence.");
+    DoErrorTest(str, i, "Invalid escape sequence.",
+                ParseErrorType::INVALID_ESCAPE_SEQUENCE);
   }
   // Two high surrogates.
   str = "[\"\\ud83d\\ud83d\"]";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Invalid low surrogate.");
+    DoErrorTest(str, i, "Invalid low surrogate.",
+                ParseErrorType::INVALID_LOW_SURROGATE);
   }
 }
 
@@ -527,21 +555,24 @@ TEST_F(JsonStreamParserTest, ExtraTextAfterTrue) {
   StringPiece str = "truee";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.RenderBool("", true);
-    DoErrorTest(str, i, "Parsing terminated before end of input.");
+    DoErrorTest(str, i, "Parsing terminated before end of input.",
+                ParseErrorType::PARSING_TERMINATED_BEFORE_END_OF_INPUT);
   }
 }
 
 TEST_F(JsonStreamParserTest, InvalidNumberDashOnly) {
   StringPiece str = "-";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Unable to parse number.");
+    DoErrorTest(str, i, "Unable to parse number.",
+                ParseErrorType::UNABLE_TO_PARSE_NUMBER);
   }
 }
 
 TEST_F(JsonStreamParserTest, InvalidNumberDashName) {
   StringPiece str = "-foo";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Unable to parse number.");
+    DoErrorTest(str, i, "Unable to parse number.",
+                ParseErrorType::UNABLE_TO_PARSE_NUMBER);
   }
 }
 
@@ -549,7 +580,7 @@ TEST_F(JsonStreamParserTest, InvalidLiteralInArray) {
   StringPiece str = "[nule]";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartList("");
-    DoErrorTest(str, i, "Unexpected token.");
+    DoErrorTest(str, i, "Unexpected token.", ParseErrorType::UNEXPECTED_TOKEN);
   }
 }
 
@@ -557,7 +588,8 @@ TEST_F(JsonStreamParserTest, InvalidLiteralInObject) {
   StringPiece str = "{123false}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Expected an object key or }.");
+    DoErrorTest(str, i, "Expected an object key or }.",
+                ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 }
 
@@ -565,14 +597,16 @@ TEST_F(JsonStreamParserTest, InvalidLiteralInObject) {
 TEST_F(JsonStreamParserTest, MismatchedSingleQuotedLiteral) {
   StringPiece str = "'Some str\"";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Closing quote expected in string.");
+    DoErrorTest(str, i, "Closing quote expected in string.",
+                ParseErrorType::EXPECTED_CLOSING_QUOTE);
   }
 }
 
 TEST_F(JsonStreamParserTest, MismatchedDoubleQuotedLiteral) {
   StringPiece str = "\"Another string that ends poorly!'";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Closing quote expected in string.");
+    DoErrorTest(str, i, "Closing quote expected in string.",
+                ParseErrorType::EXPECTED_CLOSING_QUOTE);
   }
 }
 
@@ -580,14 +614,16 @@ TEST_F(JsonStreamParserTest, MismatchedDoubleQuotedLiteral) {
 TEST_F(JsonStreamParserTest, UnterminatedLiteralString) {
   StringPiece str = "\"Forgot the rest of i";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Closing quote expected in string.");
+    DoErrorTest(str, i, "Closing quote expected in string.",
+                ParseErrorType::EXPECTED_CLOSING_QUOTE);
   }
 }
 
 TEST_F(JsonStreamParserTest, UnterminatedStringEscape) {
   StringPiece str = "\"Forgot the rest of \\";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Closing quote expected in string.");
+    DoErrorTest(str, i, "Closing quote expected in string.",
+                ParseErrorType::EXPECTED_CLOSING_QUOTE);
   }
 }
 
@@ -595,7 +631,8 @@ TEST_F(JsonStreamParserTest, UnterminatedStringInArray) {
   StringPiece str = "[\"Forgot to close the string]";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartList("");
-    DoErrorTest(str, i, "Closing quote expected in string.");
+    DoErrorTest(str, i, "Closing quote expected in string.",
+                ParseErrorType::EXPECTED_CLOSING_QUOTE);
   }
 }
 
@@ -603,7 +640,8 @@ TEST_F(JsonStreamParserTest, UnterminatedStringInObject) {
   StringPiece str = "{f: \"Forgot to close the string}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Closing quote expected in string.");
+    DoErrorTest(str, i, "Closing quote expected in string.",
+                ParseErrorType::EXPECTED_CLOSING_QUOTE);
   }
 }
 
@@ -611,7 +649,8 @@ TEST_F(JsonStreamParserTest, UnterminatedObject) {
   StringPiece str = "{";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Unexpected end of string.");
+    DoErrorTest(str, i, "Unexpected end of string.",
+                ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 }
 
@@ -621,7 +660,8 @@ TEST_F(JsonStreamParserTest, MismatchedCloseObject) {
   StringPiece str = "{'key': true]";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("")->RenderBool("key", true);
-    DoErrorTest(str, i, "Expected , or } after key:value pair.");
+    DoErrorTest(str, i, "Expected , or } after key:value pair.",
+                ParseErrorType::EXPECTED_COMMA_OR_BRACES);
   }
 }
 
@@ -629,7 +669,8 @@ TEST_F(JsonStreamParserTest, MismatchedCloseArray) {
   StringPiece str = "[true, null}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartList("")->RenderBool("", true)->RenderNull("");
-    DoErrorTest(str, i, "Expected , or ] after array value.");
+    DoErrorTest(str, i, "Expected , or ] after array value.",
+                ParseErrorType::EXPECTED_COMMA_OR_BRACKET);
   }
 }
 
@@ -638,7 +679,8 @@ TEST_F(JsonStreamParserTest, InvalidNumericObjectKey) {
   StringPiece str = "{42: true}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Expected an object key or }.");
+    DoErrorTest(str, i, "Expected an object key or }.",
+                ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 }
 
@@ -646,7 +688,8 @@ TEST_F(JsonStreamParserTest, InvalidLiteralObjectInObject) {
   StringPiece str = "{{bob: true}}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Expected an object key or }.");
+    DoErrorTest(str, i, "Expected an object key or }.",
+                ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 }
 
@@ -654,7 +697,8 @@ TEST_F(JsonStreamParserTest, InvalidLiteralArrayInObject) {
   StringPiece str = "{[null]}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Expected an object key or }.");
+    DoErrorTest(str, i, "Expected an object key or }.",
+                ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 }
 
@@ -662,7 +706,8 @@ TEST_F(JsonStreamParserTest, InvalidLiteralValueInObject) {
   StringPiece str = "{false}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Expected an object key or }.");
+    DoErrorTest(str, i, "Expected an object key or }.",
+                ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 }
 
@@ -670,7 +715,8 @@ TEST_F(JsonStreamParserTest, MissingColonAfterStringInObject) {
   StringPiece str = "{\"key\"}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Expected : between key:value pair.");
+    DoErrorTest(str, i, "Expected : between key:value pair.",
+                ParseErrorType::EXPECTED_COLON);
   }
 }
 
@@ -678,7 +724,8 @@ TEST_F(JsonStreamParserTest, MissingColonAfterKeyInObject) {
   StringPiece str = "{key}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Expected : between key:value pair.");
+    DoErrorTest(str, i, "Expected : between key:value pair.",
+                ParseErrorType::EXPECTED_COLON);
   }
 }
 
@@ -686,7 +733,8 @@ TEST_F(JsonStreamParserTest, EndOfTextAfterKeyInObject) {
   StringPiece str = "{key";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Unexpected end of string.");
+    DoErrorTest(str, i, "Unexpected end of string.",
+                ParseErrorType::EXPECTED_COLON);
   }
 }
 
@@ -694,7 +742,7 @@ TEST_F(JsonStreamParserTest, MissingValueAfterColonInObject) {
   StringPiece str = "{key:}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Unexpected token.");
+    DoErrorTest(str, i, "Unexpected token.", ParseErrorType::UNEXPECTED_TOKEN);
   }
 }
 
@@ -702,7 +750,8 @@ TEST_F(JsonStreamParserTest, MissingCommaBetweenObjectEntries) {
   StringPiece str = "{key:20 'hello': true}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("")->RenderUint64("key", 20);
-    DoErrorTest(str, i, "Expected , or } after key:value pair.");
+    DoErrorTest(str, i, "Expected , or } after key:value pair.",
+                ParseErrorType::EXPECTED_COMMA_OR_BRACES);
   }
 }
 
@@ -710,7 +759,8 @@ TEST_F(JsonStreamParserTest, InvalidLiteralAsObjectKey) {
   StringPiece str = "{false: 20}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Expected an object key or }.");
+    DoErrorTest(str, i, "Expected an object key or }.",
+                ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 }
 
@@ -718,7 +768,8 @@ TEST_F(JsonStreamParserTest, ExtraCharactersAfterObject) {
   StringPiece str = "{}}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("")->EndObject();
-    DoErrorTest(str, i, "Parsing terminated before end of input.");
+    DoErrorTest(str, i, "Parsing terminated before end of input.",
+                ParseErrorType::PARSING_TERMINATED_BEFORE_END_OF_INPUT);
   }
 }
 
@@ -742,12 +793,14 @@ TEST_F(JsonStreamParserTest, DoubleTooBig) {
   StringPiece str = "[1.89769e+308]";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartList("");
-    DoErrorTest(str, i, "Number exceeds the range of double.");
+    DoErrorTest(str, i, "Number exceeds the range of double.",
+                ParseErrorType::NUMBER_EXCEEDS_RANGE_DOUBLE);
   }
   str = "[-1.89769e+308]";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartList("");
-    DoErrorTest(str, i, "Number exceeds the range of double.");
+    DoErrorTest(str, i, "Number exceeds the range of double.",
+                ParseErrorType::NUMBER_EXCEEDS_RANGE_DOUBLE);
   }
 }
 
@@ -756,7 +809,8 @@ TEST_F(JsonStreamParserTest, DoubleTooBig) {
 TEST_F(JsonStreamParserTest, UnfinishedEscape) {
   StringPiece str = "\"\\";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Closing quote expected in string.");
+    DoErrorTest(str, i, "Closing quote expected in string.",
+                ParseErrorType::EXPECTED_CLOSING_QUOTE);
   }
 }
 
@@ -764,7 +818,8 @@ TEST_F(JsonStreamParserTest, UnfinishedEscape) {
 TEST_F(JsonStreamParserTest, UnfinishedUnicodeEscape) {
   StringPiece str = "\"\\u";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Illegal hex string.");
+    DoErrorTest(str, i, "Illegal hex string.",
+                ParseErrorType::ILLEGAL_HEX_STRING);
   }
 }
 
@@ -772,7 +827,8 @@ TEST_F(JsonStreamParserTest, UnfinishedUnicodeEscape) {
 TEST_F(JsonStreamParserTest, UnicodeEscapeCutOff) {
   StringPiece str = "\"\\u12";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Illegal hex string.");
+    DoErrorTest(str, i, "Illegal hex string.",
+                ParseErrorType::ILLEGAL_HEX_STRING);
   }
 }
 
@@ -780,7 +836,8 @@ TEST_F(JsonStreamParserTest, UnicodeEscapeCutOff) {
 TEST_F(JsonStreamParserTest, BracketedUnicodeEscape) {
   StringPiece str = "\"\\u{1f36f}\"";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Invalid escape sequence.");
+    DoErrorTest(str, i, "Invalid escape sequence.",
+                ParseErrorType::INVALID_ESCAPE_SEQUENCE);
   }
 }
 
@@ -788,7 +845,8 @@ TEST_F(JsonStreamParserTest, BracketedUnicodeEscape) {
 TEST_F(JsonStreamParserTest, UnicodeEscapeInvalidCharacters) {
   StringPiece str = "\"\\u12$4hello";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Invalid escape sequence.");
+    DoErrorTest(str, i, "Invalid escape sequence.",
+                ParseErrorType::INVALID_ESCAPE_SEQUENCE);
   }
 }
 
@@ -796,7 +854,8 @@ TEST_F(JsonStreamParserTest, UnicodeEscapeInvalidCharacters) {
 TEST_F(JsonStreamParserTest, UnicodeEscapeLowHalfSurrogateInvalidCharacters) {
   StringPiece str = "\"\\ud800\\udcfg\"";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Invalid escape sequence.");
+    DoErrorTest(str, i, "Invalid escape sequence.",
+                ParseErrorType::INVALID_ESCAPE_SEQUENCE);
   }
 }
 
@@ -805,7 +864,8 @@ TEST_F(JsonStreamParserTest, ExtraCommaInObject) {
   StringPiece str = "{'k1': true,,'k2': false}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("")->RenderBool("k1", true);
-    DoErrorTest(str, i, "Expected an object key or }.");
+    DoErrorTest(str, i, "Expected an object key or }.",
+                ParseErrorType::EXPECTED_OBJECT_KEY_OR_BRACES);
   }
 }
 
@@ -813,7 +873,7 @@ TEST_F(JsonStreamParserTest, ExtraCommaInArray) {
   StringPiece str = "[true,,false}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartList("")->RenderBool("", true);
-    DoErrorTest(str, i, "Unexpected token.");
+    DoErrorTest(str, i, "Unexpected token.", ParseErrorType::UNEXPECTED_TOKEN);
   }
 }
 
@@ -822,7 +882,8 @@ TEST_F(JsonStreamParserTest, ExtraTextAfterLiteral) {
   StringPiece str = "'hello', 'world'";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.RenderString("", "hello");
-    DoErrorTest(str, i, "Parsing terminated before end of input.");
+    DoErrorTest(str, i, "Parsing terminated before end of input.",
+                ParseErrorType::PARSING_TERMINATED_BEFORE_END_OF_INPUT);
   }
 }
 
@@ -830,7 +891,8 @@ TEST_F(JsonStreamParserTest, ExtraTextAfterObject) {
   StringPiece str = "{'key': true} 'oops'";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("")->RenderBool("key", true)->EndObject();
-    DoErrorTest(str, i, "Parsing terminated before end of input.");
+    DoErrorTest(str, i, "Parsing terminated before end of input.",
+                ParseErrorType::PARSING_TERMINATED_BEFORE_END_OF_INPUT);
   }
 }
 
@@ -838,7 +900,8 @@ TEST_F(JsonStreamParserTest, ExtraTextAfterArray) {
   StringPiece str = "[null] 'oops'";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartList("")->RenderNull("")->EndList();
-    DoErrorTest(str, i, "Parsing terminated before end of input.");
+    DoErrorTest(str, i, "Parsing terminated before end of input.",
+                ParseErrorType::PARSING_TERMINATED_BEFORE_END_OF_INPUT);
   }
 }
 
@@ -846,7 +909,7 @@ TEST_F(JsonStreamParserTest, ExtraTextAfterArray) {
 TEST_F(JsonStreamParserTest, UnknownCharactersAsValue) {
   StringPiece str = "*&#25";
   for (int i = 0; i <= str.length(); ++i) {
-    DoErrorTest(str, i, "Expected a value.");
+    DoErrorTest(str, i, "Expected a value.", ParseErrorType::EXPECTED_VALUE);
   }
 }
 
@@ -854,7 +917,8 @@ TEST_F(JsonStreamParserTest, UnknownCharactersInArray) {
   StringPiece str = "[*&#25]";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartList("");
-    DoErrorTest(str, i, "Expected a value or ] within an array.");
+    DoErrorTest(str, i, "Expected a value or ] within an array.",
+                ParseErrorType::EXPECTED_VALUE_OR_BRACKET);
   }
 }
 
@@ -862,7 +926,7 @@ TEST_F(JsonStreamParserTest, UnknownCharactersInObject) {
   StringPiece str = "{'key': *&#25}";
   for (int i = 0; i <= str.length(); ++i) {
     ow_.StartObject("");
-    DoErrorTest(str, i, "Expected a value.");
+    DoErrorTest(str, i, "Expected a value.", ParseErrorType::EXPECTED_VALUE);
   }
 }
 

src/google/protobuf/util/internal/object_writer.h

@@ -31,6 +31,8 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_OBJECT_WRITER_H__
 #define GOOGLE_PROTOBUF_UTIL_CONVERTER_OBJECT_WRITER_H__
 
+#include <cstdint>
+
 #include <google/protobuf/stubs/common.h>
 #include <google/protobuf/stubs/strutil.h>
 
@@ -79,16 +81,18 @@ class PROTOBUF_EXPORT ObjectWriter {
   virtual ObjectWriter* RenderBool(StringPiece name, bool value) = 0;
 
   // Renders an 32-bit integer value.
-  virtual ObjectWriter* RenderInt32(StringPiece name, int32 value) = 0;
+  virtual ObjectWriter* RenderInt32(StringPiece name, int32_t value) = 0;
 
   // Renders an 32-bit unsigned integer value.
-  virtual ObjectWriter* RenderUint32(StringPiece name, uint32 value) = 0;
+  virtual ObjectWriter* RenderUint32(StringPiece name,
+                                     uint32_t value) = 0;
 
   // Renders a 64-bit integer value.
-  virtual ObjectWriter* RenderInt64(StringPiece name, int64 value) = 0;
+  virtual ObjectWriter* RenderInt64(StringPiece name, int64_t value) = 0;
 
   // Renders an 64-bit unsigned integer value.
-  virtual ObjectWriter* RenderUint64(StringPiece name, uint64 value) = 0;
+  virtual ObjectWriter* RenderUint64(StringPiece name,
+                                     uint64_t value) = 0;
 
 
   // Renders a double value.

src/google/protobuf/util/internal/proto_writer.cc

@@ -30,6 +30,7 @@
 
 #include <google/protobuf/util/internal/proto_writer.h>
 
+#include <cstdint>
 #include <functional>
 #include <stack>
 
@@ -122,7 +123,7 @@ namespace {
 // Writes an INT32 field, including tag to the stream.
 inline util::Status WriteInt32(int field_number, const DataPiece& data,
                                CodedOutputStream* stream) {
-  util::StatusOr<int32> i32 = data.ToInt32();
+  util::StatusOr<int32_t> i32 = data.ToInt32();
   if (i32.ok()) {
     WireFormatLite::WriteInt32(field_number, i32.value(), stream);
   }
@@ -132,7 +133,7 @@ inline util::Status WriteInt32(int field_number, const DataPiece& data,
 // writes an SFIXED32 field, including tag, to the stream.
 inline util::Status WriteSFixed32(int field_number, const DataPiece& data,
                                   CodedOutputStream* stream) {
-  util::StatusOr<int32> i32 = data.ToInt32();
+  util::StatusOr<int32_t> i32 = data.ToInt32();
   if (i32.ok()) {
     WireFormatLite::WriteSFixed32(field_number, i32.value(), stream);
   }
@@ -142,7 +143,7 @@ inline util::Status WriteSFixed32(int field_number, const DataPiece& data,
 // Writes an SINT32 field, including tag, to the stream.
 inline util::Status WriteSInt32(int field_number, const DataPiece& data,
                                 CodedOutputStream* stream) {
-  util::StatusOr<int32> i32 = data.ToInt32();
+  util::StatusOr<int32_t> i32 = data.ToInt32();
   if (i32.ok()) {
     WireFormatLite::WriteSInt32(field_number, i32.value(), stream);
   }
@@ -152,7 +153,7 @@ inline util::Status WriteSInt32(int field_number, const DataPiece& data,
 // Writes a FIXED32 field, including tag, to the stream.
 inline util::Status WriteFixed32(int field_number, const DataPiece& data,
                                  CodedOutputStream* stream) {
-  util::StatusOr<uint32> u32 = data.ToUint32();
+  util::StatusOr<uint32_t> u32 = data.ToUint32();
   if (u32.ok()) {
     WireFormatLite::WriteFixed32(field_number, u32.value(), stream);
   }
@@ -162,7 +163,7 @@ inline util::Status WriteFixed32(int field_number, const DataPiece& data,
 // Writes a UINT32 field, including tag, to the stream.
 inline util::Status WriteUInt32(int field_number, const DataPiece& data,
                                 CodedOutputStream* stream) {
-  util::StatusOr<uint32> u32 = data.ToUint32();
+  util::StatusOr<uint32_t> u32 = data.ToUint32();
   if (u32.ok()) {
     WireFormatLite::WriteUInt32(field_number, u32.value(), stream);
   }
@@ -172,7 +173,7 @@ inline util::Status WriteUInt32(int field_number, const DataPiece& data,
 // Writes an INT64 field, including tag, to the stream.
 inline util::Status WriteInt64(int field_number, const DataPiece& data,
                                CodedOutputStream* stream) {
-  util::StatusOr<int64> i64 = data.ToInt64();
+  util::StatusOr<int64_t> i64 = data.ToInt64();
   if (i64.ok()) {
     WireFormatLite::WriteInt64(field_number, i64.value(), stream);
   }
@@ -182,7 +183,7 @@ inline util::Status WriteInt64(int field_number, const DataPiece& data,
 // Writes an SFIXED64 field, including tag, to the stream.
 inline util::Status WriteSFixed64(int field_number, const DataPiece& data,
                                   CodedOutputStream* stream) {
-  util::StatusOr<int64> i64 = data.ToInt64();
+  util::StatusOr<int64_t> i64 = data.ToInt64();
   if (i64.ok()) {
     WireFormatLite::WriteSFixed64(field_number, i64.value(), stream);
   }
@@ -192,7 +193,7 @@ inline util::Status WriteSFixed64(int field_number, const DataPiece& data,
 // Writes an SINT64 field, including tag, to the stream.
 inline util::Status WriteSInt64(int field_number, const DataPiece& data,
                                 CodedOutputStream* stream) {
-  util::StatusOr<int64> i64 = data.ToInt64();
+  util::StatusOr<int64_t> i64 = data.ToInt64();
   if (i64.ok()) {
     WireFormatLite::WriteSInt64(field_number, i64.value(), stream);
   }
@@ -202,7 +203,7 @@ inline util::Status WriteSInt64(int field_number, const DataPiece& data,
 // Writes a FIXED64 field, including tag, to the stream.
 inline util::Status WriteFixed64(int field_number, const DataPiece& data,
                                  CodedOutputStream* stream) {
-  util::StatusOr<uint64> u64 = data.ToUint64();
+  util::StatusOr<uint64_t> u64 = data.ToUint64();
   if (u64.ok()) {
     WireFormatLite::WriteFixed64(field_number, u64.value(), stream);
   }
@@ -212,7 +213,7 @@ inline util::Status WriteFixed64(int field_number, const DataPiece& data,
 // Writes a UINT64 field, including tag, to the stream.
 inline util::Status WriteUInt64(int field_number, const DataPiece& data,
                                 CodedOutputStream* stream) {
-  util::StatusOr<uint64> u64 = data.ToUint64();
+  util::StatusOr<uint64_t> u64 = data.ToUint64();
   if (u64.ok()) {
     WireFormatLite::WriteUInt64(field_number, u64.value(), stream);
   }
@@ -431,11 +432,11 @@ std::string ProtoWriter::ProtoElement::ToString() const {
   return loc;
 }
 
-bool ProtoWriter::ProtoElement::IsOneofIndexTaken(int32 index) {
+bool ProtoWriter::ProtoElement::IsOneofIndexTaken(int32_t index) {
   return oneof_indices_[index];
 }
 
-void ProtoWriter::ProtoElement::TakeOneofIndex(int32 index) {
+void ProtoWriter::ProtoElement::TakeOneofIndex(int32_t index) {
   oneof_indices_[index] = true;
 }
 
@@ -801,8 +802,8 @@ void ProtoWriter::WriteRootMessage() {
     //   size_insert_.front().size: the size (integer) to be inserted.
     if (!size_insert_.empty() && curr_pos == size_insert_.front().pos) {
       // Varint32 occupies at most 10 bytes.
-      uint8 insert_buffer[10];
-      uint8* insert_buffer_pos = CodedOutputStream::WriteVarint32ToArray(
+      uint8_t insert_buffer[10];
+      uint8_t* insert_buffer_pos = CodedOutputStream::WriteVarint32ToArray(
           size_insert_.front().size, insert_buffer);
       output_->Append(reinterpret_cast<const char*>(insert_buffer),
                       insert_buffer_pos - insert_buffer);

src/google/protobuf/util/internal/proto_writer.h

@@ -31,6 +31,7 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_PROTO_WRITER_H__
 #define GOOGLE_PROTOBUF_UTIL_CONVERTER_PROTO_WRITER_H__
 
+#include <cstdint>
 #include <deque>
 #include <string>
 #include <vector>
@@ -82,16 +83,16 @@ class PROTOBUF_EXPORT ProtoWriter : public StructuredObjectWriter {
   ProtoWriter* RenderBool(StringPiece name, bool value) override {
     return RenderDataPiece(name, DataPiece(value));
   }
-  ProtoWriter* RenderInt32(StringPiece name, int32 value) override {
+  ProtoWriter* RenderInt32(StringPiece name, int32_t value) override {
     return RenderDataPiece(name, DataPiece(value));
   }
-  ProtoWriter* RenderUint32(StringPiece name, uint32 value) override {
+  ProtoWriter* RenderUint32(StringPiece name, uint32_t value) override {
     return RenderDataPiece(name, DataPiece(value));
   }
-  ProtoWriter* RenderInt64(StringPiece name, int64 value) override {
+  ProtoWriter* RenderInt64(StringPiece name, int64_t value) override {
     return RenderDataPiece(name, DataPiece(value));
   }
-  ProtoWriter* RenderUint64(StringPiece name, uint64 value) override {
+  ProtoWriter* RenderUint64(StringPiece name, uint64_t value) override {
     return RenderDataPiece(name, DataPiece(value));
   }
   ProtoWriter* RenderDouble(StringPiece name, double value) override {
@@ -204,11 +205,11 @@ class PROTOBUF_EXPORT ProtoWriter : public StructuredObjectWriter {
     }
 
     // Returns true if the index is already taken by a preceding oneof input.
-    bool IsOneofIndexTaken(int32 index);
+    bool IsOneofIndexTaken(int32_t index);
 
     // Marks the oneof 'index' as taken. Future inputs to this oneof will
     // generate an error.
-    void TakeOneofIndex(int32 index);
+    void TakeOneofIndex(int32_t index);
 
     bool proto3() { return proto3_; }
 

src/google/protobuf/util/internal/protostream_objectsource.cc

@@ -30,6 +30,7 @@
 
 #include <google/protobuf/util/internal/protostream_objectsource.h>
 
+#include <cstdint>
 #include <unordered_map>
 #include <utility>
 
@@ -83,7 +84,7 @@ const google::protobuf::EnumValue* FindEnumValueByNumber(
     const google::protobuf::Enum& tech_enum, int number);
 
 // Utility function to format nanos.
-const std::string FormatNanos(uint32 nanos, bool with_trailing_zeros);
+const std::string FormatNanos(uint32_t nanos, bool with_trailing_zeros);
 
 util::StatusOr<std::string> MapKeyDefaultValueAsString(
     const google::protobuf::Field& field) {
@@ -148,7 +149,7 @@ util::Status ProtoStreamObjectSource::NamedWriteTo(StringPiece name,
 }
 
 const google::protobuf::Field* ProtoStreamObjectSource::FindAndVerifyField(
-    const google::protobuf::Type& type, uint32 tag) const {
+    const google::protobuf::Type& type, uint32_t tag) const {
   // Lookup the new field in the type by tag number.
   const google::protobuf::Field* field = FindFieldByNumber(type, tag >> 3);
   // Verify if the field corresponds to the wire type in tag.
@@ -169,7 +170,8 @@ const google::protobuf::Field* ProtoStreamObjectSource::FindAndVerifyField(
 
 util::Status ProtoStreamObjectSource::WriteMessage(
     const google::protobuf::Type& type, StringPiece name,
-    const uint32 end_tag, bool include_start_and_end, ObjectWriter* ow) const {
+    const uint32_t end_tag, bool include_start_and_end,
+    ObjectWriter* ow) const {
 
   const TypeRenderer* type_renderer = FindTypeRenderer(type.name());
   if (type_renderer != nullptr) {
@@ -179,7 +181,7 @@ util::Status ProtoStreamObjectSource::WriteMessage(
   const google::protobuf::Field* field = nullptr;
   std::string field_name;
   // last_tag set to dummy value that is different from tag.
-  uint32 tag = stream_->ReadTag(), last_tag = tag + 1;
+  uint32_t tag = stream_->ReadTag(), last_tag = tag + 1;
   UnknownFieldSet unknown_fields;
 
 
@@ -230,10 +232,10 @@ util::Status ProtoStreamObjectSource::WriteMessage(
   return util::Status();
 }
 
-util::StatusOr<uint32> ProtoStreamObjectSource::RenderList(
+util::StatusOr<uint32_t> ProtoStreamObjectSource::RenderList(
     const google::protobuf::Field* field, StringPiece name,
-    uint32 list_tag, ObjectWriter* ow) const {
-  uint32 tag_to_return = 0;
+    uint32_t list_tag, ObjectWriter* ow) const {
+  uint32_t tag_to_return = 0;
   ow->StartList(name);
   if (IsPackable(*field) &&
       list_tag ==
@@ -252,19 +254,20 @@ util::StatusOr<uint32> ProtoStreamObjectSource::RenderList(
   return tag_to_return;
 }
 
-util::StatusOr<uint32> ProtoStreamObjectSource::RenderMap(
+util::StatusOr<uint32_t> ProtoStreamObjectSource::RenderMap(
     const google::protobuf::Field* field, StringPiece name,
-    uint32 list_tag, ObjectWriter* ow) const {
+    uint32_t list_tag, ObjectWriter* ow) const {
   const google::protobuf::Type* field_type =
       typeinfo_->GetTypeByTypeUrl(field->type_url());
-  uint32 tag_to_return = 0;
+  uint32_t tag_to_return = 0;
   do {
     // Render map entry message type.
-    uint32 buffer32;
+    uint32_t buffer32;
     stream_->ReadVarint32(&buffer32);  // message length
     int old_limit = stream_->PushLimit(buffer32);
     std::string map_key;
-    for (uint32 tag = stream_->ReadTag(); tag != 0; tag = stream_->ReadTag()) {
+    for (uint32_t tag = stream_->ReadTag(); tag != 0;
+         tag = stream_->ReadTag()) {
       const google::protobuf::Field* field =
           FindAndVerifyField(*field_type, tag);
       if (field == nullptr) {
@@ -301,7 +304,7 @@ util::StatusOr<uint32> ProtoStreamObjectSource::RenderMap(
 
 util::Status ProtoStreamObjectSource::RenderPacked(
     const google::protobuf::Field* field, ObjectWriter* ow) const {
-  uint32 length;
+  uint32_t length;
   stream_->ReadVarint32(&length);
   int old_limit = stream_->PushLimit(length);
   while (stream_->BytesUntilLimit() > 0) {
@@ -314,9 +317,9 @@ util::Status ProtoStreamObjectSource::RenderPacked(
 util::Status ProtoStreamObjectSource::RenderTimestamp(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  std::pair<int64, int32> p = os->ReadSecondsAndNanos(type);
-  int64 seconds = p.first;
-  int32 nanos = p.second;
+  std::pair<int64_t, int32_t> p = os->ReadSecondsAndNanos(type);
+  int64_t seconds = p.first;
+  int32_t nanos = p.second;
   if (seconds > kTimestampMaxSeconds || seconds < kTimestampMinSeconds) {
     return util::Status(
         util::error::INTERNAL,
@@ -339,9 +342,9 @@ util::Status ProtoStreamObjectSource::RenderTimestamp(
 util::Status ProtoStreamObjectSource::RenderDuration(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  std::pair<int64, int32> p = os->ReadSecondsAndNanos(type);
-  int64 seconds = p.first;
-  int32 nanos = p.second;
+  std::pair<int64_t, int32_t> p = os->ReadSecondsAndNanos(type);
+  int64_t seconds = p.first;
+  int32_t nanos = p.second;
   if (seconds > kDurationMaxSeconds || seconds < kDurationMinSeconds) {
     return util::Status(
         util::error::INTERNAL,
@@ -384,8 +387,8 @@ util::Status ProtoStreamObjectSource::RenderDuration(
 util::Status ProtoStreamObjectSource::RenderDouble(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
-  uint64 buffer64 = 0;  // default value of Double wrapper value
+  uint32_t tag = os->stream_->ReadTag();
+  uint64_t buffer64 = 0;  // default value of Double wrapper value
   if (tag != 0) {
     os->stream_->ReadLittleEndian64(&buffer64);
     os->stream_->ReadTag();
@@ -397,8 +400,8 @@ util::Status ProtoStreamObjectSource::RenderDouble(
 util::Status ProtoStreamObjectSource::RenderFloat(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
-  uint32 buffer32 = 0;  // default value of Float wrapper value
+  uint32_t tag = os->stream_->ReadTag();
+  uint32_t buffer32 = 0;  // default value of Float wrapper value
   if (tag != 0) {
     os->stream_->ReadLittleEndian32(&buffer32);
     os->stream_->ReadTag();
@@ -410,61 +413,61 @@ util::Status ProtoStreamObjectSource::RenderFloat(
 util::Status ProtoStreamObjectSource::RenderInt64(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
-  uint64 buffer64 = 0;  // default value of Int64 wrapper value
+  uint32_t tag = os->stream_->ReadTag();
+  uint64_t buffer64 = 0;  // default value of Int64 wrapper value
   if (tag != 0) {
     os->stream_->ReadVarint64(&buffer64);
     os->stream_->ReadTag();
   }
-  ow->RenderInt64(field_name, bit_cast<int64>(buffer64));
+  ow->RenderInt64(field_name, bit_cast<int64_t>(buffer64));
   return util::Status();
 }
 
 util::Status ProtoStreamObjectSource::RenderUInt64(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
-  uint64 buffer64 = 0;  // default value of UInt64 wrapper value
+  uint32_t tag = os->stream_->ReadTag();
+  uint64_t buffer64 = 0;  // default value of UInt64 wrapper value
   if (tag != 0) {
     os->stream_->ReadVarint64(&buffer64);
     os->stream_->ReadTag();
   }
-  ow->RenderUint64(field_name, bit_cast<uint64>(buffer64));
+  ow->RenderUint64(field_name, bit_cast<uint64_t>(buffer64));
   return util::Status();
 }
 
 util::Status ProtoStreamObjectSource::RenderInt32(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
-  uint32 buffer32 = 0;  // default value of Int32 wrapper value
+  uint32_t tag = os->stream_->ReadTag();
+  uint32_t buffer32 = 0;  // default value of Int32 wrapper value
   if (tag != 0) {
     os->stream_->ReadVarint32(&buffer32);
     os->stream_->ReadTag();
   }
-  ow->RenderInt32(field_name, bit_cast<int32>(buffer32));
+  ow->RenderInt32(field_name, bit_cast<int32_t>(buffer32));
   return util::Status();
 }
 
 util::Status ProtoStreamObjectSource::RenderUInt32(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
-  uint32 buffer32 = 0;  // default value of UInt32 wrapper value
+  uint32_t tag = os->stream_->ReadTag();
+  uint32_t buffer32 = 0;  // default value of UInt32 wrapper value
   if (tag != 0) {
     os->stream_->ReadVarint32(&buffer32);
     os->stream_->ReadTag();
   }
-  ow->RenderUint32(field_name, bit_cast<uint32>(buffer32));
+  ow->RenderUint32(field_name, bit_cast<uint32_t>(buffer32));
   return util::Status();
 }
 
 util::Status ProtoStreamObjectSource::RenderBool(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
-  uint64 buffer64 = 0;  // results in 'false' value as default, which is the
-                        // default value of Bool wrapper
+  uint32_t tag = os->stream_->ReadTag();
+  uint64_t buffer64 = 0;  // results in 'false' value as default, which is the
+                          // default value of Bool wrapper
   if (tag != 0) {
     os->stream_->ReadVarint64(&buffer64);
     os->stream_->ReadTag();
@@ -476,8 +479,8 @@ util::Status ProtoStreamObjectSource::RenderBool(
 util::Status ProtoStreamObjectSource::RenderString(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
-  uint32 buffer32;
+  uint32_t tag = os->stream_->ReadTag();
+  uint32_t buffer32;
   std::string str;  // default value of empty for String wrapper
   if (tag != 0) {
     os->stream_->ReadVarint32(&buffer32);  // string size.
@@ -491,8 +494,8 @@ util::Status ProtoStreamObjectSource::RenderString(
 util::Status ProtoStreamObjectSource::RenderBytes(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
-  uint32 buffer32;
+  uint32_t tag = os->stream_->ReadTag();
+  uint32_t buffer32;
   std::string str;
   if (tag != 0) {
     os->stream_->ReadVarint32(&buffer32);
@@ -507,7 +510,7 @@ util::Status ProtoStreamObjectSource::RenderStruct(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
   const google::protobuf::Field* field = nullptr;
-  uint32 tag = os->stream_->ReadTag();
+  uint32_t tag = os->stream_->ReadTag();
   ow->StartObject(field_name);
   while (tag != 0) {
     field = os->FindAndVerifyField(type, tag);
@@ -530,7 +533,7 @@ util::Status ProtoStreamObjectSource::RenderStructValue(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
   const google::protobuf::Field* field = nullptr;
-  for (uint32 tag = os->stream_->ReadTag(); tag != 0;
+  for (uint32_t tag = os->stream_->ReadTag(); tag != 0;
        tag = os->stream_->ReadTag()) {
     field = os->FindAndVerifyField(type, tag);
     if (field == nullptr) {
@@ -546,7 +549,7 @@ util::Status ProtoStreamObjectSource::RenderStructValue(
 util::Status ProtoStreamObjectSource::RenderStructListValue(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
-  uint32 tag = os->stream_->ReadTag();
+  uint32_t tag = os->stream_->ReadTag();
 
   // Render empty list when we find empty ListValue message.
   if (tag == 0) {
@@ -571,7 +574,7 @@ util::Status ProtoStreamObjectSource::RenderAny(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
   // An Any is of the form { string type_url = 1; bytes value = 2; }
-  uint32 tag;
+  uint32_t tag;
   std::string type_url;
   std::string value;
 
@@ -586,12 +589,12 @@ util::Status ProtoStreamObjectSource::RenderAny(
     // //google/protobuf/any.proto
     if (field->number() == 1) {
       // read type_url
-      uint32 type_url_size;
+      uint32_t type_url_size;
       os->stream_->ReadVarint32(&type_url_size);
       os->stream_->ReadString(&type_url, type_url_size);
     } else if (field->number() == 2) {
       // read value
-      uint32 value_size;
+      uint32_t value_size;
       os->stream_->ReadVarint32(&value_size);
       os->stream_->ReadString(&value, value_size);
     }
@@ -647,9 +650,9 @@ util::Status ProtoStreamObjectSource::RenderFieldMask(
     const ProtoStreamObjectSource* os, const google::protobuf::Type& type,
     StringPiece field_name, ObjectWriter* ow) {
   std::string combined;
-  uint32 buffer32;
-  uint32 paths_field_tag = 0;
-  for (uint32 tag = os->stream_->ReadTag(); tag != 0;
+  uint32_t buffer32;
+  uint32_t paths_field_tag = 0;
+  for (uint32_t tag = os->stream_->ReadTag(); tag != 0;
        tag = os->stream_->ReadTag()) {
     if (paths_field_tag == 0) {
       const google::protobuf::Field* field = os->FindAndVerifyField(type, tag);
@@ -737,7 +740,7 @@ util::Status ProtoStreamObjectSource::RenderField(
   // and ends up using a lot of stack space. Keep the stack usage of this
   // message small in order to preserve stack space and not crash.
   if (field->kind() == google::protobuf::Field::TYPE_MESSAGE) {
-    uint32 buffer32;
+    uint32_t buffer32;
     stream_->ReadVarint32(&buffer32);  // message length
     int old_limit = stream_->PushLimit(buffer32);
     // Get the nested message type for this field.
@@ -778,8 +781,8 @@ util::Status ProtoStreamObjectSource::RenderNonMessageField(
     const google::protobuf::Field* field, StringPiece field_name,
     ObjectWriter* ow) const {
   // Temporary buffers of different types.
-  uint32 buffer32 = 0;
-  uint64 buffer64 = 0;
+  uint32_t buffer32 = 0;
+  uint64_t buffer64 = 0;
   std::string strbuffer;
   switch (field->kind()) {
     case google::protobuf::Field::TYPE_BOOL: {
@@ -789,7 +792,7 @@ util::Status ProtoStreamObjectSource::RenderNonMessageField(
     }
     case google::protobuf::Field::TYPE_INT32: {
       stream_->ReadVarint32(&buffer32);
-      ow->RenderInt32(field_name, bit_cast<int32>(buffer32));
+      ow->RenderInt32(field_name, bit_cast<int32_t>(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_INT64: {
@@ -799,7 +802,7 @@ util::Status ProtoStreamObjectSource::RenderNonMessageField(
     }
     case google::protobuf::Field::TYPE_UINT32: {
       stream_->ReadVarint32(&buffer32);
-      ow->RenderUint32(field_name, bit_cast<uint32>(buffer32));
+      ow->RenderUint32(field_name, bit_cast<uint32_t>(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_UINT64: {
@@ -819,7 +822,7 @@ util::Status ProtoStreamObjectSource::RenderNonMessageField(
     }
     case google::protobuf::Field::TYPE_SFIXED32: {
       stream_->ReadLittleEndian32(&buffer32);
-      ow->RenderInt32(field_name, bit_cast<int32>(buffer32));
+      ow->RenderInt32(field_name, bit_cast<int32_t>(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_SFIXED64: {
@@ -829,7 +832,7 @@ util::Status ProtoStreamObjectSource::RenderNonMessageField(
     }
     case google::protobuf::Field::TYPE_FIXED32: {
       stream_->ReadLittleEndian32(&buffer32);
-      ow->RenderUint32(field_name, bit_cast<uint32>(buffer32));
+      ow->RenderUint32(field_name, bit_cast<uint32_t>(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_FIXED64: {
@@ -907,85 +910,85 @@ const std::string ProtoStreamObjectSource::ReadFieldValueAsString(
   std::string result;
   switch (field.kind()) {
     case google::protobuf::Field::TYPE_BOOL: {
-      uint64 buffer64;
+      uint64_t buffer64;
       stream_->ReadVarint64(&buffer64);
       result = buffer64 != 0 ? "true" : "false";
       break;
     }
     case google::protobuf::Field::TYPE_INT32: {
-      uint32 buffer32;
+      uint32_t buffer32;
       stream_->ReadVarint32(&buffer32);
-      result = StrCat(bit_cast<int32>(buffer32));
+      result = StrCat(bit_cast<int32_t>(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_INT64: {
-      uint64 buffer64;
+      uint64_t buffer64;
       stream_->ReadVarint64(&buffer64);
-      result = StrCat(bit_cast<int64>(buffer64));
+      result = StrCat(bit_cast<int64_t>(buffer64));
       break;
     }
     case google::protobuf::Field::TYPE_UINT32: {
-      uint32 buffer32;
+      uint32_t buffer32;
       stream_->ReadVarint32(&buffer32);
-      result = StrCat(bit_cast<uint32>(buffer32));
+      result = StrCat(bit_cast<uint32_t>(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_UINT64: {
-      uint64 buffer64;
+      uint64_t buffer64;
       stream_->ReadVarint64(&buffer64);
-      result = StrCat(bit_cast<uint64>(buffer64));
+      result = StrCat(bit_cast<uint64_t>(buffer64));
       break;
     }
     case google::protobuf::Field::TYPE_SINT32: {
-      uint32 buffer32;
+      uint32_t buffer32;
       stream_->ReadVarint32(&buffer32);
       result = StrCat(WireFormatLite::ZigZagDecode32(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_SINT64: {
-      uint64 buffer64;
+      uint64_t buffer64;
       stream_->ReadVarint64(&buffer64);
       result = StrCat(WireFormatLite::ZigZagDecode64(buffer64));
       break;
     }
     case google::protobuf::Field::TYPE_SFIXED32: {
-      uint32 buffer32;
+      uint32_t buffer32;
       stream_->ReadLittleEndian32(&buffer32);
-      result = StrCat(bit_cast<int32>(buffer32));
+      result = StrCat(bit_cast<int32_t>(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_SFIXED64: {
-      uint64 buffer64;
+      uint64_t buffer64;
       stream_->ReadLittleEndian64(&buffer64);
-      result = StrCat(bit_cast<int64>(buffer64));
+      result = StrCat(bit_cast<int64_t>(buffer64));
       break;
     }
     case google::protobuf::Field::TYPE_FIXED32: {
-      uint32 buffer32;
+      uint32_t buffer32;
       stream_->ReadLittleEndian32(&buffer32);
-      result = StrCat(bit_cast<uint32>(buffer32));
+      result = StrCat(bit_cast<uint32_t>(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_FIXED64: {
-      uint64 buffer64;
+      uint64_t buffer64;
       stream_->ReadLittleEndian64(&buffer64);
-      result = StrCat(bit_cast<uint64>(buffer64));
+      result = StrCat(bit_cast<uint64_t>(buffer64));
       break;
     }
     case google::protobuf::Field::TYPE_FLOAT: {
-      uint32 buffer32;
+      uint32_t buffer32;
       stream_->ReadLittleEndian32(&buffer32);
       result = SimpleFtoa(bit_cast<float>(buffer32));
       break;
     }
     case google::protobuf::Field::TYPE_DOUBLE: {
-      uint64 buffer64;
+      uint64_t buffer64;
       stream_->ReadLittleEndian64(&buffer64);
       result = SimpleDtoa(bit_cast<double>(buffer64));
       break;
     }
     case google::protobuf::Field::TYPE_ENUM: {
-      uint32 buffer32;
+      uint32_t buffer32;
       stream_->ReadVarint32(&buffer32);
       // Get the nested enum type for this field.
       // TODO(skarvaje): Avoid string manipulation. Find ways to speed this
@@ -1003,13 +1006,13 @@ const std::string ProtoStreamObjectSource::ReadFieldValueAsString(
       break;
     }
     case google::protobuf::Field::TYPE_STRING: {
-      uint32 buffer32;
+      uint32_t buffer32;
       stream_->ReadVarint32(&buffer32);  // string size.
       stream_->ReadString(&result, buffer32);
       break;
     }
     case google::protobuf::Field::TYPE_BYTES: {
-      uint32 buffer32;
+      uint32_t buffer32;
       stream_->ReadVarint32(&buffer32);  // bytes size.
       stream_->ReadString(&result, buffer32);
       break;
@@ -1030,13 +1033,13 @@ bool ProtoStreamObjectSource::IsMap(
          util::converter::IsMap(field, *field_type);
 }
 
-std::pair<int64, int32> ProtoStreamObjectSource::ReadSecondsAndNanos(
+std::pair<int64_t, int32_t> ProtoStreamObjectSource::ReadSecondsAndNanos(
     const google::protobuf::Type& type) const {
-  uint64 seconds = 0;
-  uint32 nanos = 0;
-  uint32 tag = 0;
-  int64 signed_seconds = 0;
-  int32 signed_nanos = 0;
+  uint64_t seconds = 0;
+  uint32_t nanos = 0;
+  uint32_t tag = 0;
+  int64_t signed_seconds = 0;
+  int32_t signed_nanos = 0;
 
   for (tag = stream_->ReadTag(); tag != 0; tag = stream_->ReadTag()) {
     const google::protobuf::Field* field = FindAndVerifyField(type, tag);
@@ -1049,14 +1052,14 @@ std::pair<int64, int32> ProtoStreamObjectSource::ReadSecondsAndNanos(
     if (field->number() == 1) {
       // read seconds
       stream_->ReadVarint64(&seconds);
-      signed_seconds = bit_cast<int64>(seconds);
+      signed_seconds = bit_cast<int64_t>(seconds);
     } else if (field->number() == 2) {
       // read nanos
       stream_->ReadVarint32(&nanos);
-      signed_nanos = bit_cast<int32>(nanos);
+      signed_nanos = bit_cast<int32_t>(nanos);
     }
   }
-  return std::pair<int64, int32>(signed_seconds, signed_nanos);
+  return std::pair<int64_t, int32_t>(signed_seconds, signed_nanos);
 }
 
 util::Status ProtoStreamObjectSource::IncrementRecursionDepth(
@@ -1104,7 +1107,7 @@ const google::protobuf::EnumValue* FindEnumValueByNumber(
 
 // TODO(skarvaje): Look into optimizing this by not doing computation on
 // double.
-const std::string FormatNanos(uint32 nanos, bool with_trailing_zeros) {
+const std::string FormatNanos(uint32_t nanos, bool with_trailing_zeros) {
   if (nanos == 0) {
     return with_trailing_zeros ? ".000" : "";
   }

src/google/protobuf/util/internal/protostream_objectsource.h

@@ -31,6 +31,7 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_PROTOSTREAM_OBJECTSOURCE_H__
 #define GOOGLE_PROTOBUF_UTIL_CONVERTER_PROTOSTREAM_OBJECTSOURCE_H__
 
+#include <cstdint>
 #include <functional>
 #include <string>
 #include <unordered_map>
@@ -73,6 +74,7 @@ class TypeInfo;
 //   Status status = os.WriteTo(<some ObjectWriter>);
 class PROTOBUF_EXPORT ProtoStreamObjectSource : public ObjectSource {
  public:
+
   struct RenderOptions {
     RenderOptions() = default;
     RenderOptions(const RenderOptions&) = default;
@@ -141,20 +143,20 @@ class PROTOBUF_EXPORT ProtoStreamObjectSource : public ObjectSource {
   // already inside of an object, and skip calling StartObject and EndObject.
   virtual util::Status WriteMessage(const google::protobuf::Type& type,
                                     StringPiece name,
-                                    const uint32 end_tag,
+                                    const uint32_t end_tag,
                                     bool include_start_and_end,
                                     ObjectWriter* ow) const;
 
   // Renders a repeating field (packed or unpacked).  Returns the next tag after
   // reading all sequential repeating elements. The caller should use this tag
   // before reading more tags from the stream.
-  virtual util::StatusOr<uint32> RenderList(
+  virtual util::StatusOr<uint32_t> RenderList(
       const google::protobuf::Field* field, StringPiece name,
-      uint32 list_tag, ObjectWriter* ow) const;
+      uint32_t list_tag, ObjectWriter* ow) const;
 
   // Looks up a field and verify its consistency with wire type in tag.
   const google::protobuf::Field* FindAndVerifyField(
-      const google::protobuf::Type& type, uint32 tag) const;
+      const google::protobuf::Type& type, uint32_t tag) const;
 
   // Renders a field value to the ObjectWriter.
   virtual util::Status RenderField(const google::protobuf::Field* field,
@@ -187,9 +189,9 @@ class PROTOBUF_EXPORT ProtoStreamObjectSource : public ObjectSource {
   // Renders a NWP map.
   // Returns the next tag after reading all map entries. The caller should use
   // this tag before reading more tags from the stream.
-  util::StatusOr<uint32> RenderMap(const google::protobuf::Field* field,
-                                   StringPiece name, uint32 list_tag,
-                                   ObjectWriter* ow) const;
+  util::StatusOr<uint32_t> RenderMap(const google::protobuf::Field* field,
+                                     StringPiece name, uint32_t list_tag,
+                                     ObjectWriter* ow) const;
 
   // Renders a packed repeating field. A packed field is stored as:
   // {tag length item1 item2 item3} instead of the less efficient
@@ -281,7 +283,7 @@ class PROTOBUF_EXPORT ProtoStreamObjectSource : public ObjectSource {
 
   // Utility to read int64 and int32 values from a message type in stream_.
   // Used for reading google.protobuf.Timestamp and Duration messages.
-  std::pair<int64, int32> ReadSecondsAndNanos(
+  std::pair<int64_t, int32_t> ReadSecondsAndNanos(
       const google::protobuf::Type& type) const;
 
   // Helper function to check recursion depth and increment it. It will return

src/google/protobuf/util/internal/protostream_objectsource_test.cc

@@ -30,6 +30,7 @@
 
 #include <google/protobuf/util/internal/protostream_objectsource.h>
 
+#include <cstdint>
 #include <memory>
 #include <sstream>
 
@@ -120,9 +121,8 @@ class ProtostreamObjectSourceTest
     render_options.use_lower_camel_for_enums = use_lower_camel_for_enums_;
     render_options.use_ints_for_enums = use_ints_for_enums_;
     render_options.preserve_proto_field_names = use_preserve_proto_field_names_;
-    std::unique_ptr<ProtoStreamObjectSource> os(
-        helper_.NewProtoSource(&in_stream, GetTypeUrl(descriptor),
-                               render_options));
+    std::unique_ptr<ProtoStreamObjectSource> os(helper_.NewProtoSource(
+        &in_stream, GetTypeUrl(descriptor), render_options));
     os->set_max_recursion_depth(64);
     return os->WriteTo(&mock_);
   }
@@ -130,13 +130,13 @@ class ProtostreamObjectSourceTest
   void PrepareExpectingObjectWriterForRepeatedPrimitive() {
     ow_.StartObject("")
         ->StartList("repFix32")
-        ->RenderUint32("", bit_cast<uint32>(3201))
-        ->RenderUint32("", bit_cast<uint32>(0))
-        ->RenderUint32("", bit_cast<uint32>(3202))
+        ->RenderUint32("", bit_cast<uint32_t>(3201))
+        ->RenderUint32("", bit_cast<uint32_t>(0))
+        ->RenderUint32("", bit_cast<uint32_t>(3202))
         ->EndList()
         ->StartList("repU32")
-        ->RenderUint32("", bit_cast<uint32>(3203))
-        ->RenderUint32("", bit_cast<uint32>(0))
+        ->RenderUint32("", bit_cast<uint32_t>(3203))
+        ->RenderUint32("", bit_cast<uint32_t>(0))
         ->EndList()
         ->StartList("repI32")
         ->RenderInt32("", 0)
@@ -153,13 +153,13 @@ class ProtostreamObjectSourceTest
         ->RenderInt32("", 3208)
         ->EndList()
         ->StartList("repFix64")
-        ->RenderUint64("", bit_cast<uint64>(int64{6401}))
-        ->RenderUint64("", bit_cast<uint64>(int64{0}))
+        ->RenderUint64("", bit_cast<uint64_t>(int64_t{6401}))
+        ->RenderUint64("", bit_cast<uint64_t>(int64_t{0}))
         ->EndList()
         ->StartList("repU64")
-        ->RenderUint64("", bit_cast<uint64>(int64{0}))
-        ->RenderUint64("", bit_cast<uint64>(int64{6402}))
-        ->RenderUint64("", bit_cast<uint64>(int64{6403}))
+        ->RenderUint64("", bit_cast<uint64_t>(int64_t{0}))
+        ->RenderUint64("", bit_cast<uint64_t>(int64_t{6402}))
+        ->RenderUint64("", bit_cast<uint64_t>(int64_t{6403}))
         ->EndList()
         ->StartList("repI64")
         ->RenderInt64("", 6404L)
@@ -321,13 +321,13 @@ TEST_P(ProtostreamObjectSourceTest, Primitives) {
   primitive.set_bool_(true);
 
   ow_.StartObject("")
-      ->RenderUint32("fix32", bit_cast<uint32>(3201))
-      ->RenderUint32("u32", bit_cast<uint32>(3202))
+      ->RenderUint32("fix32", bit_cast<uint32_t>(3201))
+      ->RenderUint32("u32", bit_cast<uint32_t>(3202))
       ->RenderInt32("i32", 3203)
       ->RenderInt32("sf32", 3204)
       ->RenderInt32("s32", 3205)
-      ->RenderUint64("fix64", bit_cast<uint64>(int64{6401}))
-      ->RenderUint64("u64", bit_cast<uint64>(int64{6402}))
+      ->RenderUint64("fix64", bit_cast<uint64_t>(int64_t{6401}))
+      ->RenderUint64("u64", bit_cast<uint64_t>(int64_t{6402}))
       ->RenderInt64("i64", 6403L)
       ->RenderInt64("sf64", 6404L)
       ->RenderInt64("s64", 6405L)
@@ -425,10 +425,10 @@ TEST_P(ProtostreamObjectSourceTest, BadAuthor) {
       ->RenderBool("", false)
       ->EndList()
       ->StartList("name")
-      ->RenderUint64("", static_cast<uint64>('j'))
-      ->RenderUint64("", static_cast<uint64>('o'))
-      ->RenderUint64("", static_cast<uint64>('h'))
-      ->RenderUint64("", static_cast<uint64>('n'))
+      ->RenderUint64("", static_cast<uint64_t>('j'))
+      ->RenderUint64("", static_cast<uint64_t>('o'))
+      ->RenderUint64("", static_cast<uint64_t>('h'))
+      ->RenderUint64("", static_cast<uint64_t>('n'))
       ->EndList()
       ->RenderString("pseudonym", "phil")
       ->RenderString("pseudonym", "bob")

src/google/protobuf/util/internal/protostream_objectwriter.cc

@@ -30,6 +30,7 @@
 
 #include <google/protobuf/util/internal/protostream_objectwriter.h>
 
+#include <cstdint>
 #include <functional>
 #include <stack>
 #include <unordered_map>
@@ -129,7 +130,7 @@ void SplitSecondsAndNanos(StringPiece input, StringPiece* seconds,
 Status GetNanosFromStringPiece(StringPiece s_nanos,
                                const char* parse_failure_message,
                                const char* exceeded_limit_message,
-                               int32* nanos) {
+                               int32_t* nanos) {
   *nanos = 0;
 
   // Count the number of leading 0s and consume them.
@@ -137,7 +138,7 @@ Status GetNanosFromStringPiece(StringPiece s_nanos,
   while (s_nanos.Consume("0")) {
     num_leading_zeros++;
   }
-  int32 i_nanos = 0;
+  int32_t i_nanos = 0;
   // 's_nanos' contains fractional seconds -- i.e. 'nanos' is equal to
   // "0." + s_nanos.ToString() seconds. An int32 is used for the
   // conversion to 'nanos', rather than a double, so that there is no
@@ -156,11 +157,11 @@ Status GetNanosFromStringPiece(StringPiece s_nanos,
   if (i_nanos > 0) {
     // 'scale' is the number of digits to the right of the decimal
     // point in "0." + s_nanos.ToString()
-    int32 scale = num_leading_zeros + s_nanos.size();
+    int32_t scale = num_leading_zeros + s_nanos.size();
     // 'conversion' converts i_nanos into nanoseconds.
     // conversion = kNanosPerSecond / static_cast<int32>(std::pow(10, scale))
     // For efficiency, we precompute the conversion factor.
-    int32 conversion = 0;
+    int32_t conversion = 0;
     switch (scale) {
       case 1:
         conversion = 100000000;
@@ -921,7 +922,7 @@ Status ProtoStreamObjectWriter::RenderStructValue(ProtoStreamObjectWriter* ow,
   switch (data.type()) {
     case DataPiece::TYPE_INT32: {
       if (ow->options_.struct_integers_as_strings) {
-        util::StatusOr<int32> int_value = data.ToInt32();
+        util::StatusOr<int32_t> int_value = data.ToInt32();
         if (int_value.ok()) {
           ow->ProtoWriter::RenderDataPiece(
               "string_value",
@@ -934,7 +935,7 @@ Status ProtoStreamObjectWriter::RenderStructValue(ProtoStreamObjectWriter* ow,
     }
     case DataPiece::TYPE_UINT32: {
       if (ow->options_.struct_integers_as_strings) {
-        util::StatusOr<uint32> int_value = data.ToUint32();
+        util::StatusOr<uint32_t> int_value = data.ToUint32();
         if (int_value.ok()) {
           ow->ProtoWriter::RenderDataPiece(
               "string_value",
@@ -949,7 +950,7 @@ Status ProtoStreamObjectWriter::RenderStructValue(ProtoStreamObjectWriter* ow,
       // If the option to treat integers as strings is set, then render them as
       // strings. Otherwise, fallback to rendering them as double.
       if (ow->options_.struct_integers_as_strings) {
-        util::StatusOr<int64> int_value = data.ToInt64();
+        util::StatusOr<int64_t> int_value = data.ToInt64();
         if (int_value.ok()) {
           ow->ProtoWriter::RenderDataPiece(
               "string_value", DataPiece(StrCat(int_value.value()), true));
@@ -963,7 +964,7 @@ Status ProtoStreamObjectWriter::RenderStructValue(ProtoStreamObjectWriter* ow,
       // If the option to treat integers as strings is set, then render them as
       // strings. Otherwise, fallback to rendering them as double.
       if (ow->options_.struct_integers_as_strings) {
-        util::StatusOr<uint64> int_value = data.ToUint64();
+        util::StatusOr<uint64_t> int_value = data.ToUint64();
         if (int_value.ok()) {
           ow->ProtoWriter::RenderDataPiece(
               "string_value", DataPiece(StrCat(int_value.value()), true));
@@ -1092,13 +1093,13 @@ Status ProtoStreamObjectWriter::RenderDuration(ProtoStreamObjectWriter* ow,
 
   StringPiece s_secs, s_nanos;
   SplitSecondsAndNanos(value, &s_secs, &s_nanos);
-  uint64 unsigned_seconds;
+  uint64_t unsigned_seconds;
   if (!safe_strtou64(s_secs, &unsigned_seconds)) {
     return Status(util::error::INVALID_ARGUMENT,
                   "Invalid duration format, failed to parse seconds");
   }
 
-  int32 nanos = 0;
+  int32_t nanos = 0;
   Status nanos_status = GetNanosFromStringPiece(
       s_nanos, "Invalid duration format, failed to parse nano seconds",
       "Duration value exceeds limits", &nanos);
@@ -1107,7 +1108,7 @@ Status ProtoStreamObjectWriter::RenderDuration(ProtoStreamObjectWriter* ow,
   }
   nanos = sign * nanos;
 
-  int64 seconds = sign * unsigned_seconds;
+  int64_t seconds = sign * unsigned_seconds;
   if (seconds > kDurationMaxSeconds || seconds < kDurationMinSeconds ||
       nanos <= -kNanosPerSecond || nanos >= kNanosPerSecond) {
     return Status(util::error::INVALID_ARGUMENT,

src/google/protobuf/util/internal/utility.cc

@@ -32,6 +32,7 @@
 
 #include <algorithm>
 #include <cmath>
+#include <cstdint>
 #include <limits>
 
 #include <google/protobuf/stubs/callback.h>
@@ -63,9 +64,9 @@ bool GetBoolOptionOrDefault(
   return GetBoolFromAny(opt->value());
 }
 
-int64 GetInt64OptionOrDefault(
+int64_t GetInt64OptionOrDefault(
     const RepeatedPtrField<google::protobuf::Option>& options,
-    StringPiece option_name, int64 default_value) {
+    StringPiece option_name, int64_t default_value) {
   const google::protobuf::Option* opt = FindOptionOrNull(options, option_name);
   if (opt == nullptr) {
     return default_value;
@@ -106,7 +107,7 @@ bool GetBoolFromAny(const google::protobuf::Any& any) {
   return b.value();
 }
 
-int64 GetInt64FromAny(const google::protobuf::Any& any) {
+int64_t GetInt64FromAny(const google::protobuf::Any& any) {
   google::protobuf::Int64Value i;
   ParseFromAny(any.value(), &i);
   return i.value();
@@ -179,7 +180,7 @@ const google::protobuf::Field* FindJsonFieldInTypeOrNull(
 }
 
 const google::protobuf::Field* FindFieldInTypeByNumberOrNull(
-    const google::protobuf::Type* type, int32 number) {
+    const google::protobuf::Type* type, int32_t number) {
   if (type != nullptr) {
     for (int i = 0; i < type->fields_size(); ++i) {
       const google::protobuf::Field& field = type->fields(i);
@@ -205,7 +206,7 @@ const google::protobuf::EnumValue* FindEnumValueByNameOrNull(
 }
 
 const google::protobuf::EnumValue* FindEnumValueByNumberOrNull(
-    const google::protobuf::Enum* enum_type, int32 value) {
+    const google::protobuf::Enum* enum_type, int32_t value) {
   if (enum_type != nullptr) {
     for (int i = 0; i < enum_type->enumvalue_size(); ++i) {
       const google::protobuf::EnumValue& enum_value = enum_type->enumvalue(i);

src/google/protobuf/util/internal/utility.h

@@ -31,6 +31,7 @@
 #ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_UTILITY_H__
 #define GOOGLE_PROTOBUF_UTIL_CONVERTER_UTILITY_H__
 
+#include <cstdint>
 #include <memory>
 #include <string>
 #include <utility>
@@ -53,7 +54,7 @@ namespace util {
 namespace converter {
 
 // Size of "type.googleapis.com"
-static const int64 kTypeUrlSize = 19;
+static const int64_t kTypeUrlSize = 19;
 
 // Finds the tech option identified by option_name. Parses the boolean value and
 // returns it.
@@ -64,9 +65,9 @@ PROTOBUF_EXPORT bool GetBoolOptionOrDefault(
 
 // Returns int64 option value. If the option isn't found, returns the
 // default_value.
-PROTOBUF_EXPORT int64 GetInt64OptionOrDefault(
+PROTOBUF_EXPORT int64_t GetInt64OptionOrDefault(
     const RepeatedPtrField<google::protobuf::Option>& options,
-    StringPiece option_name, int64 default_value);
+    StringPiece option_name, int64_t default_value);
 
 // Returns double option value. If the option isn't found, returns the
 // default_value.
@@ -87,7 +88,7 @@ PROTOBUF_EXPORT std::string GetStringOptionOrDefault(
 PROTOBUF_EXPORT bool GetBoolFromAny(const google::protobuf::Any& any);
 
 // Returns int64 value contained in Any type.
-PROTOBUF_EXPORT int64 GetInt64FromAny(const google::protobuf::Any& any);
+PROTOBUF_EXPORT int64_t GetInt64FromAny(const google::protobuf::Any& any);
 
 // Returns double value contained in Any type.
 PROTOBUF_EXPORT double GetDoubleFromAny(const google::protobuf::Any& any);
@@ -127,7 +128,7 @@ const google::protobuf::Field* FindJsonFieldInTypeOrNull(
 
 // Similar to FindFieldInTypeOrNull, but this looks up fields by number.
 const google::protobuf::Field* FindFieldInTypeByNumberOrNull(
-    const google::protobuf::Type* type, int32 number);
+    const google::protobuf::Type* type, int32_t number);
 
 // Finds and returns the EnumValue identified by enum_name in the passed tech
 // Enum object. Returns nullptr if none found.
@@ -137,7 +138,7 @@ const google::protobuf::EnumValue* FindEnumValueByNameOrNull(
 // Finds and returns the EnumValue identified by value in the passed tech
 // Enum object. Returns nullptr if none found.
 const google::protobuf::EnumValue* FindEnumValueByNumberOrNull(
-    const google::protobuf::Enum* enum_type, int32 value);
+    const google::protobuf::Enum* enum_type, int32_t value);
 
 // Finds and returns the EnumValue identified by enum_name without underscore in
 // the passed tech Enum object. Returns nullptr if none found.

src/google/protobuf/util/json_util.h

@@ -36,6 +36,7 @@
 #include <google/protobuf/message.h>
 #include <google/protobuf/util/type_resolver.h>
 #include <google/protobuf/stubs/bytestream.h>
+#include <google/protobuf/stubs/status.h>
 #include <google/protobuf/stubs/strutil.h>
 
 #include <google/protobuf/port_def.inc>
@@ -93,11 +94,11 @@ typedef JsonPrintOptions JsonOptions;
 // simple wrapper of BinaryToJsonString(). It will use the DescriptorPool of the
 // passed-in message to resolve Any types.
 PROTOBUF_EXPORT util::Status MessageToJsonString(const Message& message,
-                                                   std::string* output,
-                                                   const JsonOptions& options);
+                                                 std::string* output,
+                                                 const JsonOptions& options);
 
 inline util::Status MessageToJsonString(const Message& message,
-                                          std::string* output) {
+                                        std::string* output) {
   return MessageToJsonString(message, output, JsonOptions());
 }
 
@@ -108,7 +109,7 @@ PROTOBUF_EXPORT util::Status JsonStringToMessage(
     StringPiece input, Message* message, const JsonParseOptions& options);
 
 inline util::Status JsonStringToMessage(StringPiece input,
-                                          Message* message) {
+                                        Message* message) {
   return JsonStringToMessage(input, message, JsonParseOptions());
 }
 
@@ -123,10 +124,10 @@ PROTOBUF_EXPORT util::Status BinaryToJsonStream(
     io::ZeroCopyInputStream* binary_input,
     io::ZeroCopyOutputStream* json_output, const JsonPrintOptions& options);
 
-inline util::Status BinaryToJsonStream(
-    TypeResolver* resolver, const std::string& type_url,
-    io::ZeroCopyInputStream* binary_input,
-    io::ZeroCopyOutputStream* json_output) {
+inline util::Status BinaryToJsonStream(TypeResolver* resolver,
+                                       const std::string& type_url,
+                                       io::ZeroCopyInputStream* binary_input,
+                                       io::ZeroCopyOutputStream* json_output) {
   return BinaryToJsonStream(resolver, type_url, binary_input, json_output,
                             JsonPrintOptions());
 }
@@ -137,9 +138,9 @@ PROTOBUF_EXPORT util::Status BinaryToJsonString(
     const JsonPrintOptions& options);
 
 inline util::Status BinaryToJsonString(TypeResolver* resolver,
-                                         const std::string& type_url,
-                                         const std::string& binary_input,
-                                         std::string* json_output) {
+                                       const std::string& type_url,
+                                       const std::string& binary_input,
+                                       std::string* json_output) {
   return BinaryToJsonString(resolver, type_url, binary_input, json_output,
                             JsonPrintOptions());
 }
@@ -168,9 +169,9 @@ PROTOBUF_EXPORT util::Status JsonToBinaryString(
     const JsonParseOptions& options);
 
 inline util::Status JsonToBinaryString(TypeResolver* resolver,
-                                         const std::string& type_url,
-                                         StringPiece json_input,
-                                         std::string* binary_output) {
+                                       const std::string& type_url,
+                                       StringPiece json_input,
+                                       std::string* binary_output) {
   return JsonToBinaryString(resolver, type_url, json_input, binary_output,
                             JsonParseOptions());
 }

src/google/protobuf/util/message_differencer.cc

@@ -325,14 +325,7 @@ void MessageDifferencer::CheckRepeatedFieldComparisons(
   const MapKeyComparator* key_comparator = GetMapKeyComparator(field);
   GOOGLE_CHECK(key_comparator == NULL)
       << "Cannot treat this repeated field as both MAP and " << new_comparison
-      << " for"
-      << " comparison.  Field name is: " << field->full_name();
-  GOOGLE_CHECK(repeated_field_comparisons_.find(field) ==
-            repeated_field_comparisons_.end() ||
-        repeated_field_comparisons_[field] == new_comparison)
-      << "Cannot treat the same field as both "
-      << repeated_field_comparisons_[field] << " and " << new_comparison
-      << ". Field name is: " << field->full_name();
+      << " for comparison.  Field name is: " << field->full_name();
 }
 
 void MessageDifferencer::TreatAsSet(const FieldDescriptor* field) {

src/google/protobuf/util/message_differencer.h

@@ -431,7 +431,7 @@ class PROTOBUF_EXPORT MessageDifferencer {
   // + n^3) in which n^3 is the time complexity of the maximum matching
   // algorithm.
   //
-  // REQUIRES:  field->is_repeated() and field not registered with TreatAsList
+  // REQUIRES: field->is_repeated() and field not registered with TreatAsMap*
   void TreatAsSet(const FieldDescriptor* field);
   void TreatAsSmartSet(const FieldDescriptor* field);
 
@@ -439,7 +439,7 @@ class PROTOBUF_EXPORT MessageDifferencer {
   // diffing purposes, so different orderings of the same elements will NOT be
   // considered equal.
   //
-  // REQUIRED: field->is_repeated() and field not registered with TreatAsSet
+  // REQUIRES: field->is_repeated() and field not registered with TreatAsMap*
   void TreatAsList(const FieldDescriptor* field);
   // Note that the complexity is similar to treating as SET.
   void TreatAsSmartList(const FieldDescriptor* field);

src/google/protobuf/util/message_differencer_unittest.cc

@@ -1060,6 +1060,42 @@ TEST(MessageDifferencerTest,
   EXPECT_TRUE(differencer.CompareWithFields(msg1, msg2, fields1, fields2));
 }
 
+TEST(MessageDifferencerTest, RepeatedFieldTreatmentChangeListToSet) {
+  protobuf_unittest::TestDiffMessage msg1;
+  protobuf_unittest::TestDiffMessage msg2;
+
+  msg1.add_rv(1);
+  msg1.add_rv(2);
+  msg2.add_rv(2);
+  msg2.add_rv(1);
+
+  util::MessageDifferencer differencer;
+  differencer.TreatAsList(
+      protobuf_unittest::TestDiffMessage::descriptor()->FindFieldByName("rv"));
+  differencer.TreatAsSet(
+      protobuf_unittest::TestDiffMessage::descriptor()->FindFieldByName("rv"));
+
+  EXPECT_TRUE(differencer.Compare(msg1, msg2));
+}
+
+TEST(MessageDifferencerTest, RepeatedFieldTreatmentChangeSetToList) {
+  protobuf_unittest::TestDiffMessage msg1;
+  protobuf_unittest::TestDiffMessage msg2;
+
+  msg1.add_rv(1);
+  msg1.add_rv(2);
+  msg2.add_rv(2);
+  msg2.add_rv(1);
+
+  util::MessageDifferencer differencer;
+  differencer.TreatAsSet(
+      protobuf_unittest::TestDiffMessage::descriptor()->FindFieldByName("rv"));
+  differencer.TreatAsList(
+      protobuf_unittest::TestDiffMessage::descriptor()->FindFieldByName("rv"));
+
+  EXPECT_FALSE(differencer.Compare(msg1, msg2));
+}
+
 TEST(MessageDifferencerTest, RepeatedFieldSmartListTest) {
   // Create the testing protos
   protobuf_unittest::TestDiffMessage msg1;

src/google/protobuf/util/type_resolver.h

@@ -38,6 +38,7 @@
 #include <google/protobuf/stubs/common.h>
 #include <google/protobuf/type.pb.h>
 #include <google/protobuf/stubs/status.h>
+#include <google/protobuf/stubs/status.h>
 
 #include <google/protobuf/port_def.inc>
 
@@ -60,7 +61,7 @@ class PROTOBUF_EXPORT TypeResolver {
 
   // Resolves a type url for an enum type.
   virtual util::Status ResolveEnumType(const std::string& type_url,
-                                         google::protobuf::Enum* enum_type) = 0;
+                                       google::protobuf::Enum* enum_type) = 0;
 
  private:
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(TypeResolver);

src/google/protobuf/util/type_resolver_util.cc

@@ -64,7 +64,6 @@ using google::protobuf::Type;
 using google::protobuf::UInt32Value;
 using google::protobuf::UInt64Value;
 
-using util::Status;
 using util::error::INVALID_ARGUMENT;
 using util::error::NOT_FOUND;
 

src/google/protobuf/wrappers.pb.cc

@@ -231,10 +231,8 @@ const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google
   schemas, file_default_instances, TableStruct_google_2fprotobuf_2fwrappers_2eproto::offsets,
   file_level_metadata_google_2fprotobuf_2fwrappers_2eproto, file_level_enum_descriptors_google_2fprotobuf_2fwrappers_2eproto, file_level_service_descriptors_google_2fprotobuf_2fwrappers_2eproto,
 };
-PROTOBUF_ATTRIBUTE_WEAK ::PROTOBUF_NAMESPACE_ID::Metadata
-descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(int index) {
-  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_google_2fprotobuf_2fwrappers_2eproto);
-  return descriptor_table_google_2fprotobuf_2fwrappers_2eproto.file_level_metadata[index];
+PROTOBUF_ATTRIBUTE_WEAK const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable* descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter() {
+  return &descriptor_table_google_2fprotobuf_2fwrappers_2eproto;
 }
 
 // Force running AddDescriptors() at dynamic initialization time.
@@ -424,10 +422,11 @@ void DoubleValue::InternalSwap(DoubleValue* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata DoubleValue::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter, &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fwrappers_2eproto[0]);
 }
 
-
 // ===================================================================
 
 class FloatValue::_Internal {
@@ -611,10 +610,11 @@ void FloatValue::InternalSwap(FloatValue* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata FloatValue::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter, &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fwrappers_2eproto[1]);
 }
 
-
 // ===================================================================
 
 class Int64Value::_Internal {
@@ -800,10 +800,11 @@ void Int64Value::InternalSwap(Int64Value* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Int64Value::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter, &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fwrappers_2eproto[2]);
 }
 
-
 // ===================================================================
 
 class UInt64Value::_Internal {
@@ -989,10 +990,11 @@ void UInt64Value::InternalSwap(UInt64Value* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata UInt64Value::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter, &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fwrappers_2eproto[3]);
 }
 
-
 // ===================================================================
 
 class Int32Value::_Internal {
@@ -1178,10 +1180,11 @@ void Int32Value::InternalSwap(Int32Value* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata Int32Value::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter, &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fwrappers_2eproto[4]);
 }
 
-
 // ===================================================================
 
 class UInt32Value::_Internal {
@@ -1367,10 +1370,11 @@ void UInt32Value::InternalSwap(UInt32Value* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata UInt32Value::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter, &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fwrappers_2eproto[5]);
 }
 
-
 // ===================================================================
 
 class BoolValue::_Internal {
@@ -1554,10 +1558,11 @@ void BoolValue::InternalSwap(BoolValue* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata BoolValue::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter, &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fwrappers_2eproto[6]);
 }
 
-
 // ===================================================================
 
 class StringValue::_Internal {
@@ -1754,10 +1759,11 @@ void StringValue::InternalSwap(StringValue* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata StringValue::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter, &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fwrappers_2eproto[7]);
 }
 
-
 // ===================================================================
 
 class BytesValue::_Internal {
@@ -1949,10 +1955,11 @@ void BytesValue::InternalSwap(BytesValue* other) {
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata BytesValue::GetMetadata() const {
-  return GetMetadataStatic();
+  return ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(
+      &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_getter, &descriptor_table_google_2fprotobuf_2fwrappers_2eproto_once,
+      file_level_metadata_google_2fprotobuf_2fwrappers_2eproto[8]);
 }
 
-
 // @@protoc_insertion_point(namespace_scope)
 PROTOBUF_NAMESPACE_CLOSE
 PROTOBUF_NAMESPACE_OPEN

src/google/protobuf/wrappers.pb.h

@@ -53,7 +53,6 @@ struct PROTOBUF_EXPORT TableStruct_google_2fprotobuf_2fwrappers_2eproto {
   static const ::PROTOBUF_NAMESPACE_ID::uint32 offsets[];
 };
 extern PROTOBUF_EXPORT const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_google_2fprotobuf_2fwrappers_2eproto;
-PROTOBUF_EXPORT ::PROTOBUF_NAMESPACE_ID::Metadata descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(int index);
 PROTOBUF_NAMESPACE_OPEN
 class BoolValue;
 struct BoolValueDefaultTypeInternal;
@@ -128,10 +127,10 @@ class PROTOBUF_EXPORT DoubleValue PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const DoubleValue& default_instance() {
     return *internal_default_instance();
@@ -199,12 +198,6 @@ class PROTOBUF_EXPORT DoubleValue PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -265,10 +258,10 @@ class PROTOBUF_EXPORT FloatValue PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const FloatValue& default_instance() {
     return *internal_default_instance();
@@ -336,12 +329,6 @@ class PROTOBUF_EXPORT FloatValue PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -402,10 +389,10 @@ class PROTOBUF_EXPORT Int64Value PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Int64Value& default_instance() {
     return *internal_default_instance();
@@ -473,12 +460,6 @@ class PROTOBUF_EXPORT Int64Value PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -539,10 +520,10 @@ class PROTOBUF_EXPORT UInt64Value PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const UInt64Value& default_instance() {
     return *internal_default_instance();
@@ -610,12 +591,6 @@ class PROTOBUF_EXPORT UInt64Value PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -676,10 +651,10 @@ class PROTOBUF_EXPORT Int32Value PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const Int32Value& default_instance() {
     return *internal_default_instance();
@@ -747,12 +722,6 @@ class PROTOBUF_EXPORT Int32Value PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -813,10 +782,10 @@ class PROTOBUF_EXPORT UInt32Value PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const UInt32Value& default_instance() {
     return *internal_default_instance();
@@ -884,12 +853,6 @@ class PROTOBUF_EXPORT UInt32Value PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -950,10 +913,10 @@ class PROTOBUF_EXPORT BoolValue PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const BoolValue& default_instance() {
     return *internal_default_instance();
@@ -1021,12 +984,6 @@ class PROTOBUF_EXPORT BoolValue PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -1087,10 +1044,10 @@ class PROTOBUF_EXPORT StringValue PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const StringValue& default_instance() {
     return *internal_default_instance();
@@ -1158,12 +1115,6 @@ class PROTOBUF_EXPORT StringValue PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -1175,10 +1126,8 @@ class PROTOBUF_EXPORT StringValue PROTOBUF_FINAL :
   // string value = 1;
   void clear_value();
   const std::string& value() const;
-  void set_value(const std::string& value);
-  void set_value(std::string&& value);
-  void set_value(const char* value);
-  void set_value(const char* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_value(ArgT0&& arg0, ArgT... args);
   std::string* mutable_value();
   std::string* release_value();
   void set_allocated_value(std::string* value);
@@ -1231,10 +1180,10 @@ class PROTOBUF_EXPORT BytesValue PROTOBUF_FINAL :
     return GetDescriptor();
   }
   static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
-    return GetMetadataStatic().descriptor;
+    return default_instance().GetMetadata().descriptor;
   }
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
-    return GetMetadataStatic().reflection;
+    return default_instance().GetMetadata().reflection;
   }
   static const BytesValue& default_instance() {
     return *internal_default_instance();
@@ -1302,12 +1251,6 @@ class PROTOBUF_EXPORT BytesValue PROTOBUF_FINAL :
   public:
 
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
-  private:
-  static ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadataStatic() {
-    return ::descriptor_table_google_2fprotobuf_2fwrappers_2eproto_metadata_getter(kIndexInFileMessages);
-  }
-
-  public:
 
   // nested types ----------------------------------------------------
 
@@ -1319,10 +1262,8 @@ class PROTOBUF_EXPORT BytesValue PROTOBUF_FINAL :
   // bytes value = 1;
   void clear_value();
   const std::string& value() const;
-  void set_value(const std::string& value);
-  void set_value(std::string&& value);
-  void set_value(const char* value);
-  void set_value(const void* value, size_t size);
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_value(ArgT0&& arg0, ArgT... args);
   std::string* mutable_value();
   std::string* release_value();
   void set_allocated_value(std::string* value);
@@ -1530,8 +1471,11 @@ inline const std::string& StringValue::value() const {
   // @@protoc_insertion_point(field_get:google.protobuf.StringValue.value)
   return _internal_value();
 }
-inline void StringValue::set_value(const std::string& value) {
-  _internal_set_value(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void StringValue::set_value(ArgT0&& arg0, ArgT... args) {
+ 
+ value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.StringValue.value)
 }
 inline std::string* StringValue::mutable_value() {
@@ -1545,25 +1489,6 @@ inline void StringValue::_internal_set_value(const std::string& value) {
   
   value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void StringValue::set_value(std::string&& value) {
-  
-  value_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.StringValue.value)
-}
-inline void StringValue::set_value(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.StringValue.value)
-}
-inline void StringValue::set_value(const char* value,
-    size_t size) {
-  
-  value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.StringValue.value)
-}
 inline std::string* StringValue::_internal_mutable_value() {
   
   return value_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());
@@ -1595,8 +1520,11 @@ inline const std::string& BytesValue::value() const {
   // @@protoc_insertion_point(field_get:google.protobuf.BytesValue.value)
   return _internal_value();
 }
-inline void BytesValue::set_value(const std::string& value) {
-  _internal_set_value(value);
+template <typename ArgT0, typename... ArgT>
+PROTOBUF_ALWAYS_INLINE
+inline void BytesValue::set_value(ArgT0&& arg0, ArgT... args) {
+ 
+ value_.SetBytes(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, static_cast<ArgT0 &&>(arg0), args..., GetArena());
   // @@protoc_insertion_point(field_set:google.protobuf.BytesValue.value)
 }
 inline std::string* BytesValue::mutable_value() {
@@ -1610,25 +1538,6 @@ inline void BytesValue::_internal_set_value(const std::string& value) {
   
   value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, value, GetArena());
 }
-inline void BytesValue::set_value(std::string&& value) {
-  
-  value_.Set(
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::move(value), GetArena());
-  // @@protoc_insertion_point(field_set_rvalue:google.protobuf.BytesValue.value)
-}
-inline void BytesValue::set_value(const char* value) {
-  GOOGLE_DCHECK(value != nullptr);
-  
-  value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(value), GetArena());
-  // @@protoc_insertion_point(field_set_char:google.protobuf.BytesValue.value)
-}
-inline void BytesValue::set_value(const void* value,
-    size_t size) {
-  
-  value_.Set(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, ::std::string(
-      reinterpret_cast<const char*>(value), size), GetArena());
-  // @@protoc_insertion_point(field_set_pointer:google.protobuf.BytesValue.value)
-}
 inline std::string* BytesValue::_internal_mutable_value() {
   
   return value_.Mutable(::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::EmptyDefault{}, GetArena());