--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/cpp/trad/argcount.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,21 @@
+/* Test that we correctly complain about an invalid number of macro
+   arguments.  */
+
+/* { dg-do preprocess } */
+
+#define f(x) x
+#define g(x, y) x y
+#define h()
+
+f(); 		/* { dg-bogus "requires 1" "no arg is 1 empty arg" } */
+f( ); 		/* { dg-bogus "macro" "1 arg to 1 param macro" } */
+f(1,); 		/* { dg-error "passed 2" "2 args to 1 param macro" } */
+f(1,2);		/* { dg-error "passed 2" "2 args to 1 param macro" } */
+h();		/* { dg-bogus "macro" "no arg to 1 param macro" } */
+h( );		/* { dg-error "passed 1" "1 arg to 0 param macro" } */
+h(1,2);		/* { dg-error "passed 2" "2 args to 0 param macro" } */
+g();		/* { dg-error "requires 2" "0 args to 2 param macro" } */
+g( );		/* { dg-error "requires 2" "1 args to 2 param macro" } */
+g( ,2);		/* { dg-bogus "requires 2" "2 args to 2 param macro" } */
+g(,);		/* { dg-bogus "requires 2" "2 args to 2 param macro" } */
+g(1,2,3);	/* { dg-error "passed 3" "3 args to 2 param macro" } */