gcc/testsuite/gcc.dg/tree-ssa/pr82363.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O" } */
   3
   4 struct A
   5 {
   6   int b;
   7   int c;
   8   int d;
   9 };
  10
  11 struct E
  12 {
  13   int f;
  14   int g:18;
  15   struct A h;
  16 };
  17
  18 struct I
  19 {
  20   int b;
  21   int j;
  22   struct E k;
  23 };
  24
  25 int l, *m = &l;
  26
  27 struct A n;
  28 struct I o;
  29
  30 void __attribute__ ((noipa))
  31 test_l (void)
  32 {
  33   if (l != 1)
  34     __builtin_abort ();
  35 }
  36
  37 int main ()
  38 {
  39   while (1)
  40     {
  41       struct I q = { 0, 0, {0, 0, {1, 1, 1}}}, p = q, r = p, *s = &q;
  42       if (p.k.h.c)
  43         o = p;
  44       *m = r.k.h.d;
  45       n = (*s).k.h;
  46       break;
  47     }
  48   test_l ();
  49   return 0;
  50 }