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; }