--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/cpp/sysmac3.c	Thu Oct 25 10:21:07 2018 +0900
@@ -0,0 +1,26 @@
+/* Copyright (C) 2001-2017 Free Software Foundation, Inc.  */
+
+/* { dg-do preprocess } */
+/* { dg-options "-std=c99 -pedantic -Wtraditional -ftrack-macro-expansion=0" } */
+
+/* Tests diagnostics are suppressed for some macros defined in system
+   headers.  */
+
+/* Source: Neil Booth, 15 Jan 2001.  */
+
+#include "sysmac3.h"
+
+#define uint 1U
+#define str(x) x
+#define foo(x, y...) bar(x, y)	/* { dg-warning "named variadic macros" } */
+
+#if uint			/* { dg-warning "traditional C rejects" } */
+#endif
+#if sys_uint			/* { dg-bogus "traditional C rejects" } */
+#endif
+
+(str);				/* { dg-warning "used with arguments" } */
+(sys_str);			/* { dg-bogus "used with arguments" } */
+
+foo (one_arg);			/* { dg-warning "requires at least one" } */
+sys_foo (one_arg);		/* { dg-bogus "requires at least one" } */