From d5acd7f123f593a256124f313a47816c97532652 Mon Sep 17 00:00:00 2001 From: Cameron Gutman Date: Sun, 26 Apr 2026 21:42:23 -0500 Subject: [PATCH] atomic: Use __atomic_signal_fence() for SDL_CompilerBarrier() This is the (slightly) more standard way to accomplish it. --- include/SDL3/SDL_atomic.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/SDL3/SDL_atomic.h b/include/SDL3/SDL_atomic.h index e14a02a8ce..b6094b2550 100644 --- a/include/SDL3/SDL_atomic.h +++ b/include/SDL3/SDL_atomic.h @@ -156,6 +156,8 @@ extern SDL_DECLSPEC void SDLCALL SDL_UnlockSpinlock(SDL_SpinLock *lock); */ #define SDL_CompilerBarrier() DoCompilerSpecificReadWriteBarrier() +#elif SDL_HAS_BUILTIN(__atomic_signal_fence) || (defined(__GNUC__) && (__GNUC__ >= 5)) +#define SDL_CompilerBarrier() __atomic_signal_fence(__ATOMIC_SEQ_CST) #elif defined(_MSC_VER) && (_MSC_VER > 1200) && !defined(__clang__) void _ReadWriteBarrier(void); #pragma intrinsic(_ReadWriteBarrier)