gcc/testsuite/gcc.dg/tree-ssa/pr28410.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2" } */
   3
   4 extern void abort(void);
   5 struct Bar { int p; };
   6 struct Foo { struct Bar *p; };
   7 struct Bar p0 = { 0 };
   8 struct Bar p1 = { 1 };
   9 void bar(struct Foo *f)
  10 {
  11   f->p = &p0;
  12 }
  13 int foo(struct Foo *f)
  14 {
  15   f->p->p = 1;
  16   bar(f);
  17   return f->p->p;
  18 }
  19 int main()
  20 {
  21   struct Foo f;
  22   f.p = &p1;
  23   if (foo(&f) != 0)
  24     abort ();
  25   return 0;
  26 }