gcc/testsuite/gcc.dg/Wbool-operation-1.c

   1 /* PR c/77490 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wall" } */
   4
   5 int
   6 fn (_Bool b)
   7 {
   8   int r = 0;
   9
  10   r += b++; /* { dg-warning "increment of a boolean expression" } */
  11   r += ++b; /* { dg-warning "increment of a boolean expression" } */
  12   r += b--; /* { dg-warning "decrement of a boolean expression" } */
  13   r += --b; /* { dg-warning "decrement of a boolean expression" } */
  14
  15   return r;
  16 }