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Made some small fixes for MinGW and for C++20 with GCC #8318

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merged 1 commit into from Feb 19, 2021
Merged

Made some small fixes for MinGW and for C++20 with GCC #8318

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4 changes: 3 additions & 1 deletion src/google/protobuf/port_def.inc
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Expand Up @@ -562,7 +562,9 @@
// by this flag is supposed to be removed after this experiment.
// #define PROTOBUF_MESSAGE_OWNED_ARENA_EXPERIMENT

#if defined(__cpp_constinit)
// Our use of constinit does not yet work with GCC:
// https://github.com/protocolbuffers/protobuf/issues/8310
#if defined(__cpp_constinit) && !defined(__GNUC__)
#define PROTOBUF_CONSTINIT constinit
#elif defined(__has_cpp_attribute)
#if __has_cpp_attribute(clang::require_constant_initialization)
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2 changes: 1 addition & 1 deletion src/google/protobuf/stubs/mutex.h
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Expand Up @@ -126,7 +126,7 @@ class GOOGLE_PROTOBUF_CAPABILITY("mutex") PROTOBUF_EXPORT WrappedMutex {
private:
#if defined(GOOGLE_PROTOBUF_SUPPORT_WINDOWS_XP)
CallOnceInitializedMutex<CriticalSectionLock> mu_{};
#elif defined(_MSC_VER)
#elif defined(_WIN32)
CallOnceInitializedMutex<std::mutex> mu_{};
#else
std::mutex mu_{};
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