ref: 4eb0595fdcfb5064a5f81b1ffe4fb2de4c6a3dd3 dir: /tests/execute/0007-forstmt.c/
int main() { int x; x = 1; for(x = 10; x; x = x - 1) ; if(x) return 1; x = 10; for (;x;) x = x - 1; return x; }