|  | @@ -32,10 +32,10 @@
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				|  |  |   */
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				|  |  |  
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				|  |  |  #include <ruby/ruby.h>
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				|  |  | +
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				|  |  |  #include "rb_grpc_imports.generated.h"
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				|  |  |  #include "rb_call_credentials.h"
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				|  |  |  
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				|  |  | -#include <ruby/ruby.h>
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				|  |  |  #include <ruby/thread.h>
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				|  |  |  
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				|  |  |  #include <grpc/grpc.h>
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				|  | @@ -86,11 +86,11 @@ static VALUE grpc_rb_call_credentials_callback_rescue(VALUE args,
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				|  |  |        rb_funcall(exception_object, rb_intern("backtrace"), 0),
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				|  |  |        rb_intern("join"),
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				|  |  |        1, rb_str_new2("\n\tfrom "));
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				|  |  | -  VALUE exception_info = rb_funcall(exception_object, rb_intern("to_s"), 0);
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				|  |  | +  VALUE rb_exception_info = rb_funcall(exception_object, rb_intern("to_s"), 0);
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				|  |  |    const char *exception_classname = rb_obj_classname(exception_object);
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				|  |  |    (void)args;
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				|  |  |    gpr_log(GPR_INFO, "Call credentials callback failed: %s: %s\n%s",
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				|  |  | -          exception_classname, StringValueCStr(exception_info),
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				|  |  | +          exception_classname, StringValueCStr(rb_exception_info),
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				|  |  |            StringValueCStr(backtrace));
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				|  |  |    rb_hash_aset(result, rb_str_new2("metadata"), Qnil);
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				|  |  |    /* Currently only gives the exception class name. It should be possible get
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