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gh-152017: Fix deque_clear to no longer alters exceptions #152018

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gh-152017: Fix deque_clear to no longer alters exceptions #152018

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gh-152017: Fix `deque_clear` to no longer alters exceptions
brijkapadia Jun 23, 2026
40dd821
📜🤖 Added by blurb_it.
blurb-it[bot] Jun 23, 2026
9fc21a3
remove test
brijkapadia Jun 25, 2026
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2026-06-23-15-02-27.gh-issue-152017.wH89hr.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
:class:`collections.deque` no longer suppresses :exc:`MemoryError` in certain cases.
3 changes: 2 additions & 1 deletion Modules/_collectionsmodule.c
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Expand Up @@ -746,9 +746,10 @@ deque_clear(PyObject *self)
adversary could cause it to never terminate).
*/

PyObject *old_exc = PyErr_GetRaisedException();
b = newblock(deque);
PyErr_SetRaisedException(old_exc);
if (b == NULL) {
PyErr_Clear();
goto alternate_method;
}

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