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GH-94262: Don't create frame objects for frames that aren't yet complete. (GH-94371)

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Mark Shannon 2022-07-01 11:08:20 +01:00 • committed by GitHub
parent 1df9449db2
commit 544531de23
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7 changed files with 87 additions and 13 deletions
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Python/frame.c
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@ -68,9 +68,13 @@ take_ownership(PyFrameObject *f, _PyInterpreterFrame *frame)
f->f_frame = frame;
frame->owner = FRAME_OWNED_BY_FRAME_OBJECT;
assert(f->f_back == NULL);
if (frame->previous != NULL) {
_PyInterpreterFrame *prev = frame->previous;
while (prev && _PyFrame_IsIncomplete(prev)) {
prev = prev->previous;
}
if (prev) {
/* Link PyFrameObjects.f_back and remove link through _PyInterpreterFrame.previous */
PyFrameObject *back = _PyFrame_GetFrameObject(frame->previous);
PyFrameObject *back = _PyFrame_GetFrameObject(prev);
if (back == NULL) {
/* Memory error here. */
assert(PyErr_ExceptionMatches(PyExc_MemoryError));