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-rw-r--r--libcxx/include/cstdarg3
1 files changed, 2 insertions, 1 deletions
diff --git a/libcxx/include/cstdarg b/libcxx/include/cstdarg
index 17fa5a550525..f36ade202b7a 100644
--- a/libcxx/include/cstdarg
+++ b/libcxx/include/cstdarg
@@ -31,11 +31,12 @@ Types:
*/
+#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>
#include <stdarg.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#pragma GCC system_header
+# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD