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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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10
Objects/frameobject.c
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@ -1155,8 +1155,14 @@ PyFrame_GetBack(PyFrameObject *frame)
{
assert(frame != NULL);
PyFrameObject *back = frame->f_back;
if (back == NULL && frame->f_frame->previous != NULL) {
back = _PyFrame_GetFrameObject(frame->f_frame->previous);
if (back == NULL) {
_PyInterpreterFrame *prev = frame->f_frame->previous;
while (prev && _PyFrame_IsIncomplete(prev)) {
prev = prev->previous;
}
if (prev) {
back = _PyFrame_GetFrameObject(prev);
}
}
Py_XINCREF(back);
return back;