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-rw-r--r--lib/builtins/atomic_flag_clear.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/builtins/atomic_flag_clear.c b/lib/builtins/atomic_flag_clear.c
index 15984cd52..173f92a53 100644
--- a/lib/builtins/atomic_flag_clear.c
+++ b/lib/builtins/atomic_flag_clear.c
@@ -12,8 +12,12 @@
*===------------------------------------------------------------------------===
*/
+#if __has_include(<stdatomic.h>)
+
#include <stdatomic.h>
#undef atomic_flag_clear
void atomic_flag_clear(volatile atomic_flag *object) {
return __c11_atomic_store(&(object)->_Value, 0, __ATOMIC_SEQ_CST);
}
+
+#endif