gcc/testsuite/gcc.dg/torture/pr52244.c

   1 /* { dg-do run } */
   2
   3 extern void abort (void);
   4
   5 typedef union u_r
   6 {
   7   _Bool b;
   8   unsigned char c;
   9 } u_t;
  10
  11 u_t
  12 bar (void)
  13 {
  14   u_t u;
  15   u.c = 0x12;
  16   return u;
  17 }
  18
  19 u_t  __attribute__ ((noinline))
  20 foo (void)
  21 {
  22   u_t u;
  23
  24   u.b = 1;
  25   u = bar ();
  26
  27   return u;
  28 }
  29
  30 int main (int argc, char **argv)
  31 {
  32   u_t u = foo ();
  33   if (u.c != 0x12)
  34     abort ();
  35   return 0;
  36 }