@@ -0,0 +1,6 @@
+def f(n):
+ if n == 0:
+ return 0
+ return n + f(n-1)
+
+assert f(900) == 405450
@@ -897,7 +897,9 @@ inline PyObject* VM::_exec(){
bool need_raise = false;
while(true){
+#if DEBUG_EXTRA_CHECK
if(frame->id < base_id) UNREACHABLE();
+#endif
try{
if(need_raise){ need_raise = false; _raise(); }
PyObject* ret = run_frame(frame);