ref: 3fb3ff2c0b27f8468e1e1ad24465742d3b89dc4e dir: /tests/execute/0018-structptr.c/
int main() { struct S { int x; int y; } s; struct S *p; p = &s; s.x = 1; p->y = 2; return p->y + p->x - 3; }