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[3.11] GH-94262: Don't create frame objects for frames that aren't yet complete. (GH-94371) (#94482)

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Co-authored-by: Mark Shannon <mark@hotpy.org>
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Miss Islington (bot) 2022-07-04 11:43:12 -07:00 • committed by GitHub
parent 8fe0b1d8fa
commit 68f5fa6683
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7 changed files with 87 additions and 13 deletions
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8
Python/frame.c
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@ -66,9 +66,13 @@ 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));