gcc/testsuite/gcc.dg/void-cast-1.c

   1 /* Don't warn where the left-hand side of a comma expression is a
   2    comma expression whose right-hand side is cast to void.  Bug
   3    21159.  */
   4 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   5 /* { dg-do compile } */
   6 /* { dg-options "-Wall" } */
   7
   8 int a, b, c, d;
   9 int e(void) { return (void)a, b; }
  10 int f(void) { return (void)a, (void)b, c; }
  11 int g(void) { return (void)a, (void)b, (void)c, d; }