gcc/testsuite/gcc.dg/pr60195.c

   1 /* PR c/60195 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=c11 -Wpedantic -Wall" } */
   4
   5 typedef _Atomic int atomic_int;
   6
   7 atomic_int
   8 fn1 (void)
   9 {
  10   atomic_int y = 0;
  11   return y;
  12 }
  13
  14 atomic_int
  15 fn2 (void)
  16 {
  17   atomic_int y = 0;
  18   y;
  19   return y;
  20 }
  21
  22 atomic_int
  23 fn3 (void)
  24 {
  25   atomic_int y = 0;
  26   y++;
  27   return y;
  28 }
  29
  30 void
  31 fn4 (void)
  32 {
  33   atomic_int y;
  34   y = 0;
  35   (void) y;
  36 }
  37
  38 void
  39 fn5 (void)
  40 {
  41   atomic_int y = 0; /* { dg-warning "unused variable" } */
  42 }
  43
  44 void
  45 fn6 (void)
  46 {
  47   atomic_int y;  /* { dg-warning "set but not used" } */
  48   y = 0;
  49 }
  50
  51 void
  52 fn7 (void)
  53 {
  54   atomic_int y = 0;
  55   y++;
  56 }