Add gcc.dg/warn-1.c

From-SVN: r58549

gcc/testsuite/ChangeLog

+2002-10-25  Mike Stump  <mrs@apple.com>
+
+	* gcc.dg/warn-1.c: New test.
+
 2002-10-25  Zack Weinberg  <zack@codesourcery.com>
 
 	* g++.dg/template/typename3.C: New test.

gcc/testsuite/gcc.dg/warn-1.c

+/* The compiler used to say passing arg 0 of, which is wrong.  */
+/* Radar 3069179 */
+
+/* { dg-options "-O3" } */
+
+static void foo (p)
+     int p;
+{	/* { dg-warning "passing arg of" } */
+}
+
+static void bar (void)
+{
+  void *vp;
+
+  foo (vp);	/* { dg-warning "" } */
+}