ref: 0bea8c5077c0ed1f2c61ce65f0b8f14eed89eca3 dir: /tests/execute/0019-selfrefstruct.c/
int main() { struct S { struct S *p; int x; } s; s.x = 0; s.p = &s; return s.p->p->p->p->p->x; }