Update _GNUC_VER to use the correct implementation of atomic operation

on Mac.

Update _GNUC_VER to use the correct implementation of atomic operation
on Mac.
e02ff1a1 · Bo Yang · cf502405 · e02ff1a1
Commit e02ff1a1 authored Dec 21, 2016 by Bo Yang
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atomicops.h src/google/protobuf/stubs/atomicops.h +1 -0

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--- a/src/google/protobuf/stubs/atomicops.h
+++ b/src/google/protobuf/stubs/atomicops.h
@@ -196,6 +196,7 @@ Atomic64 Release_Load(volatile const Atomic64* ptr);

 // Apple.
 #elif defined(GOOGLE_PROTOBUF_OS_APPLE)
+#pragma message(_GNUC_VER)
 #if __has_feature(cxx_atomic) || _GNUC_VER >= 407
 #include <google/protobuf/stubs/atomicops_internals_generic_c11_atomic.h>
 #else  // __has_feature(cxx_atomic) || _GNUC_VER >= 407