ref: 989b26202e9264b37237371f85a19630ec4f1b0a 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; }