gcc/testsuite/gcc.dg/torture/pr58956.c

   1 /* { dg-do run } */
   2
   3 extern void abort (void);
   4
   5 struct S
   6 {
   7   int f0;
   8 } a = {1}, b, g, *c = &b, **f = &c;
   9
  10 int *d, **e = &d, h;
  11
  12 struct S
  13 foo ()
  14 {
  15   *e = &h;
  16   if (!d)
  17     __builtin_unreachable ();
  18   *f = &g;
  19   return a;
  20 }
  21
  22 int
  23 main ()
  24 {
  25   struct S *i = c;
  26   *i = foo ();
  27   if (b.f0 != 1)
  28     abort ();
  29   return 0;
  30 }