gcc/testsuite/gcc.dg/torture/pr36373-4.c

/* { dg-do run } */

extern void abort (void);
struct Foo {
    int *p;
    int *q;
};
struct Foo __attribute__((noinline))
bar(int *p)
{
  struct Foo f;
  f.p = p;
  return f;
}
void __attribute__((noinline))
foo(struct Foo f)
{
  *f.p = 0;
}
int main()
{
  int a, b;
  a = 0;
  b = 1;
  struct Foo f;
  f = bar (&b);
  f.q = &a;
  foo(f);
  if (b != 0)
    abort ();
  return 0;
}