1 files changed, 13 insertions, 0 deletions
diff --git a/test/libcxx/atomics/atomics.flag/init_bool.pass.cpp b/test/libcxx/atomics/atomics.flag/init_bool.pass.cpp
index d7b172cd1212d..9dd68bd4e459f 100644
--- a/test/libcxx/atomics/atomics.flag/init_bool.pass.cpp
+++ b/test/libcxx/atomics/atomics.flag/init_bool.pass.cpp
@@ -18,8 +18,21 @@
 #include <atomic>
 #include <cassert>
 
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+// Ensure that static initialization happens; this is PR#37226
+extern std::atomic_flag global;
+struct X { X() { global.test_and_set(); }};
+X x;
+std::atomic_flag global = ATOMIC_FLAG_INIT;
+#endif
+
 int main()
 {
+#if TEST_STD_VER >= 11
+    assert(global.test_and_set() == 1);
+#endif
     {
         std::atomic_flag f(false);
         assert(f.test_and_set() == 0);