ref: 3c6c5a02710e4d7a3da6121e9bfb8d2bc0d786dd dir: /tests/cc/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; }