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				@@ -23,35 +23,36 @@ os.chdir(os.path.join(os.path.dirname(sys.argv[0]), '../../..')) 
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				 # map of banned function signature to whitelist 
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				 BANNED_EXCEPT = { 
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				-    'grpc_resource_quota_ref(': ['src/core/lib/iomgr/resource_quota.c'], 
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				-    'grpc_resource_quota_unref(': ['src/core/lib/iomgr/resource_quota.c'], 
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				-    'grpc_slice_buffer_destroy(': ['src/core/lib/slice/slice_buffer.c'], 
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				-    'grpc_slice_buffer_reset_and_unref(': ['src/core/lib/slice/slice_buffer.c'], 
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				-    'grpc_slice_ref(': ['src/core/lib/slice/slice.c'], 
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				-    'grpc_slice_unref(': ['src/core/lib/slice/slice.c'], 
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				-    'grpc_error_create(': ['src/core/lib/iomgr/error.c'], 
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				-    'grpc_error_ref(': ['src/core/lib/iomgr/error.c'], 
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				-    'grpc_error_unref(': ['src/core/lib/iomgr/error.c'], 
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				-    'grpc_os_error(': ['src/core/lib/iomgr/error.c'], 
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				-    'grpc_wsa_error(': ['src/core/lib/iomgr/error.c'], 
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				-    'grpc_log_if_error(': ['src/core/lib/iomgr/error.c'], 
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				-    'grpc_slice_malloc(': ['src/core/lib/slice/slice.c'], 
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				-    'grpc_closure_create(': ['src/core/lib/iomgr/closure.c'], 
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				-    'grpc_closure_init(': ['src/core/lib/iomgr/closure.c'], 
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				-    'grpc_closure_sched(': ['src/core/lib/iomgr/closure.c'], 
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				-    'grpc_closure_run(': ['src/core/lib/iomgr/closure.c'], 
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				-    'grpc_closure_list_sched(': ['src/core/lib/iomgr/closure.c'], 
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				+    'grpc_resource_quota_ref(': ['src/core/lib/iomgr/resource_quota.cc'], 
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				+    'grpc_resource_quota_unref(': ['src/core/lib/iomgr/resource_quota.cc'], 
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				+    'grpc_slice_buffer_destroy(': ['src/core/lib/slice/slice_buffer.cc'], 
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				+    'grpc_slice_buffer_reset_and_unref(': ['src/core/lib/slice/slice_buffer.cc'], 
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				+    'grpc_slice_ref(': ['src/core/lib/slice/slice.cc'], 
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				+    'grpc_slice_unref(': ['src/core/lib/slice/slice.cc'], 
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				+    'grpc_error_create(': ['src/core/lib/iomgr/error.cc'], 
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				+    'grpc_error_ref(': ['src/core/lib/iomgr/error.cc'], 
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				+    'grpc_error_unref(': ['src/core/lib/iomgr/error.cc'], 
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				+    'grpc_os_error(': ['src/core/lib/iomgr/error.cc'], 
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				+    'grpc_wsa_error(': ['src/core/lib/iomgr/error.cc'], 
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				+    'grpc_log_if_error(': ['src/core/lib/iomgr/error.cc'], 
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				+    'grpc_slice_malloc(': ['src/core/lib/slice/slice.cc'], 
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				+    'grpc_closure_create(': ['src/core/lib/iomgr/closure.cc'], 
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				+    'grpc_closure_init(': ['src/core/lib/iomgr/closure.cc'], 
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				+    'grpc_closure_sched(': ['src/core/lib/iomgr/closure.cc'], 
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				+    'grpc_closure_run(': ['src/core/lib/iomgr/closure.cc'], 
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				+    'grpc_closure_list_sched(': ['src/core/lib/iomgr/closure.cc'], 
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				     'gpr_getenv_silent(': [ 
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				-        'src/core/lib/gpr/log.c', 'src/core/lib/gpr/env_linux.c', 
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				-        'src/core/lib/gpr/env_posix.c', 'src/core/lib/gpr/env_windows.c' 
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				+        'src/core/lib/gpr/log.cc', 'src/core/lib/gpr/env_linux.cc', 
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				+        'src/core/lib/gpr/env_posix.cc', 'src/core/lib/gpr/env_windows.cc' 
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				     ], 
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				 } 
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				 errors = 0 
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				 for root, dirs, files in os.walk('src/core'): 
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				+    if root.startswith('src/core/tsi'): continue 
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				     for filename in files: 
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				         path = os.path.join(root, filename) 
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				-        if os.path.splitext(path)[1] != '.c': continue 
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				+        if os.path.splitext(path)[1] != '.cc': continue 
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				         with open(path) as f: 
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				             text = f.read() 
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				         for banned, exceptions in BANNED_EXCEPT.items(): 
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