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-rw-r--r--contrib/compiler-rt/lib/builtins/atomic_signal_fence.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/builtins/atomic_signal_fence.c b/contrib/compiler-rt/lib/builtins/atomic_signal_fence.c
index ad292d2..9ccc2ae 100644
--- a/contrib/compiler-rt/lib/builtins/atomic_signal_fence.c
+++ b/contrib/compiler-rt/lib/builtins/atomic_signal_fence.c
@@ -12,8 +12,16 @@
*===------------------------------------------------------------------------===
*/
+#ifndef __has_include
+#define __has_include(inc) 0
+#endif
+
+#if __has_include(<stdatomic.h>)
+
#include <stdatomic.h>
#undef atomic_signal_fence
void atomic_signal_fence(memory_order order) {
__c11_atomic_signal_fence(order);
}
+
+#endif
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