1 files changed, 3 insertions, 1 deletions
diff --git a/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/union.pass.cpp b/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/union.pass.cpp
index d30354d1a25..fb48a70f35f 100644
--- a/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/union.pass.cpp
+++ b/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/union.pass.cpp
@@ -39,7 +39,9 @@ union Union
     double __;
 };
 
-int main()
+int main(int, char**)
 {
     test_union<Union>();
+
+  return 0;
 }