gcc/testsuite/gcc.dg/pr15698-1.c

   1 /* Test diagnostics for old-style definition not matching prior
   2    prototype are present and give correct location for that prototype
   3    (bug 15698).  Original test.  */
   4 /* { dg-do compile } */
   5 /* { dg-options "-std=gnu99" } */
   6
   7 int     foobar ();
   8
   9 int func (int blah)
  10 {
  11   char *rindex();
  12 }
  13
  14 int foobar ()
  15 {
  16   return 0;
  17 }
  18
  19 char *rindex(a, b)
  20      register char *a, b; /* { dg-warning "argument 'a' doesn't match built-in prototype" } */
  21 {
  22   return 0;
  23 }
  24
  25 /* { dg-prune-output "\\\[-Wbuiltin-declaration-mismatch]" } */