1 files changed, 9 insertions, 1 deletions
diff --git a/test/clang-tidy/google-objc-function-naming.m b/test/clang-tidy/google-objc-function-naming.m
index d0336d26..01433d9f 100644
--- a/test/clang-tidy/google-objc-function-naming.m
+++ b/test/clang-tidy/google-objc-function-naming.m
@@ -1,4 +1,12 @@
-// RUN: %check_clang_tidy %s google-objc-function-naming %t
+// RUN: %check_clang_tidy %s google-objc-function-naming %t -- -- -isystem %S/Inputs/Headers
+
+#include <stdio.h>
+
+static void TestImplicitFunctionDeclaration(int a) {
+  // Call a builtin function so that the compiler generates an implicit
+  // function declaration.
+  printf("%d", a);
+}
 
 typedef _Bool bool;