ref: 9e7b8848343bdb7e2a44c5273dd7766353fdac2e dir: /tests/cc/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; }