gcc/testsuite/gcc.c-torture/execute/20071029-1.c

   1 extern void exit (int);
   2 extern void abort (void);
   3
   4 typedef union
   5 {
   6   struct
   7   {
   8     int f1, f2, f3, f4, f5, f6, f7, f8;
   9     long int f9, f10;
  10     int f11;
  11   } f;
  12   char s[56];
  13   long int a;
  14 } T;
  15
  16 __attribute__((noinline))
  17 void
  18 test (T *t)
  19 {
  20   static int i = 11;
  21   if (t->f.f1 != i++)
  22     abort ();
  23   if (t->f.f2 || t->f.f3 || t->f.f4 || t->f.f5 || t->f.f6
  24       || t->f.f7 || t->f.f8 || t->f.f9 || t->f.f10 || t->f.f11)
  25     abort ();
  26   if (i == 20)
  27     exit (0);
  28 }
  29
  30 __attribute__((noinline))
  31 void
  32 foo (int i)
  33 {
  34   T t;
  35 again:
  36   t = (T) { { ++i, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } };
  37   test (&t);
  38   goto again;
  39 }
  40
  41 int
  42 main (void)
  43 {
  44   T *t1, *t2;
  45   int cnt = 0;
  46   t1 = (T *) 0;
  47 loop:
  48   t2 = t1;
  49   t1 = & (T) { .f.f9 = cnt++ };
  50   if (cnt < 3)
  51     goto loop;
  52   if (t1 != t2 || t1->f.f9 != 2)
  53     abort ();
  54   foo (10);
  55   return 0;
  56 }