1 files changed, 9 insertions, 0 deletions
diff --git a/src/stdatomic/atomic_flag_test_and_set_explicit.c b/src/stdatomic/atomic_flag_test_and_set_explicit.c
new file mode 100644
index 00000000..f5672471
--- /dev/null
+++ b/src/stdatomic/atomic_flag_test_and_set_explicit.c
@@ -0,0 +1,9 @@
+#include <stdatomic.h>
+
+_Bool atomic_flag_test_and_set_explicit(volatile atomic_flag *object, memory_order order)
+{
+	(void)order;
+	_Bool r = (*object == 1);
+	*object = 1;
+	return r;
+}