fix: should set the error when no memory

Signed-off-by: yihong0618 <[email protected]>

Author: yihong0618

Python/ceval.c

@@ -914,6 +914,11 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
                 if (lasti == NULL) {
                     // gh-134163: If we can't allocate memory for lasti during exception handling,
                     // this likely means we're in a severe memory shortage situation.
+                    if (!_PyErr_Occurred(tstate)) {
+                        // PyLong_FromLong should have set an exception
+                        // like _testcapi.set_nomemory(0), it might not. Ensure one is set.
+                        PyErr_NoMemory();
+                    }
                     // Instead of going back to exception_unwind (which would cause
                     // infinite recursion), directly exit to let the original exception
                     // propagate up and hopefully be handled at a higher level.