gcc/testsuite/c-c++-common/torture/pr60971.c

   1 /* PR tree-optimization/60971 */
   2 /* { dg-do run } */
   3
   4 #ifndef __cplusplus
   5 #define bool _Bool
   6 #endif
   7
   8 volatile unsigned char c;
   9
  10 __attribute__((noinline)) unsigned char
  11 foo (void)
  12 {
  13   return c;
  14 }
  15
  16 __attribute__((noinline)) bool
  17 bar (void)
  18 {
  19   return foo () & 1;
  20 }
  21
  22 int
  23 main ()
  24 {
  25   c = 0x41;
  26   c = bar ();
  27   if (c != 1)
  28     __builtin_abort ();
  29   c = 0x20;
  30   c = bar ();
  31   if (c != 0)
  32     __builtin_abort ();
  33   return 0;
  34 }