1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/c90-empty-macro-args.c b/gcc/testsuite/gcc.dg/cpp/c90-empty-macro-args.c
new file mode 100644
index 00000000000..e90f8e6cb69
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/c90-empty-macro-args.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-std=c89 -pedantic" } */
+
+#define f(a,b)   f2(a,,b) 
+#define f2(a,b,c) a; b; c;
+#define f3(a)    a
+
+#define g()   p()
+
+void p(void) {}
+
+
+void foo(void)
+{
+    f(p(),p()); /* { dg-warning "macro f2 argument 2: empty macro arguments are undefined" } */
+    f2(p(),,p()); /* { dg-warning "macro f2 argument 2: empty macro arguments are undefined" } */
+    f3(); /* { dg-warning "macro f3 argument 1: empty macro arguments are undefined" } */
+    g();
+}