1 files changed, 3 insertions, 1 deletions
diff --git a/libcxx/test/std/atomics/atomics.flag/copy_ctor.fail.cpp b/libcxx/test/std/atomics/atomics.flag/copy_ctor.fail.cpp
index f167651c925..10deaf1256d 100644
--- a/libcxx/test/std/atomics/atomics.flag/copy_ctor.fail.cpp
+++ b/libcxx/test/std/atomics/atomics.flag/copy_ctor.fail.cpp
@@ -15,8 +15,10 @@
 #include <atomic>
 #include <cassert>
 
-int main()
+int main(int, char**)
 {
     std::atomic_flag f0;
     std::atomic_flag f(f0);
+
+  return 0;
 }