diff --git a/clang/test/Sema/format-strings.c b/clang/test/Sema/format-strings.c
index d8f7e4f..5ce3eb0 100644
--- a/clang/test/Sema/format-strings.c
+++ b/clang/test/Sema/format-strings.c
@@ -179,3 +179,7 @@
   asl_log(asl, 0, 3, "Error: %m"); // no-warning
   asl_log(asl, 0, 3, "Error: %W"); // expected-warning{{invalid conversion specifier 'W'}}
 }
+
+// <rdar://problem/7595366>
+typedef enum { A } int_t;
+void f0(int_t x) { printf("%d\n", x); }