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-rw-r--r--test/Sema/format-attr-pr4470.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/Sema/format-attr-pr4470.c b/test/Sema/format-attr-pr4470.c
index cba3adf1d6de..c03c573b7274 100644
--- a/test/Sema/format-attr-pr4470.c
+++ b/test/Sema/format-attr-pr4470.c
@@ -1,6 +1,7 @@
// RUN: clang-cc -fsyntax-only -verify -Wformat=2 %s
#include <stdio.h>
+#include <stdarg.h>
const char *foo(const char *format) __attribute__((format_arg(1)));