gcc/testsuite/gcc.dg/if-empty-1.c

   1 /* Test diagnostics for empty bodies in if / else.  */
   2 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   3 /* { dg-do compile } */
   4 /* { dg-options "-Wextra" } */
   5
   6 void
   7 f (int x)
   8 {
   9   if (x)
  10     ; /* { dg-warning "warning: empty body in an if-statement" } */
  11   if (x)
  12     ; /* By design we don't warn in this case.  */
  13   else
  14     (void)0;
  15   if (x)
  16     (void)0;
  17   else
  18     ; /* { dg-warning "warning: empty body in an else-statement" } */
  19   if (x)
  20     (void)0;
  21   else
  22     (void)0;
  23 }