gcc/testsuite/gcc.dg/void-cast-2.c

   1 /* Test further cases of warnings for comma expressions, with and
   2    without casts to void.  */
   3 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   4 /* { dg-do compile } */
   5 /* { dg-options "-Wall" } */
   6 int a, b, c, d;
   7 int e(void) { return (char)a, b; } /* { dg-warning "left-hand operand of comma expression has no effect" } */
   8 int f(void) { return (a ? (void)b : (void)c), d; } /* { dg-warning "left-hand operand of comma expression has no effect" } */