diff --git a/libcxx/test/support/test_macros.h b/libcxx/test/support/test_macros.h
--- a/libcxx/test/support/test_macros.h
+++ b/libcxx/test/support/test_macros.h
@@ -237,7 +237,7 @@
 #define LIBCPP_ONLY(...) __VA_ARGS__
 #else
 #define LIBCPP_ASSERT(...) ((void)0)
-#define LIBCPP_STATIC_ASSERT(...) ((void)0)
+#define LIBCPP_STATIC_ASSERT(...) static_assert(true, "")
 #define LIBCPP_ASSERT_NOEXCEPT(...) ((void)0)
 #define LIBCPP_ASSERT_NOT_NOEXCEPT(...) ((void)0)
 #define LIBCPP_ONLY(...) ((void)0)