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[3.14] gh-147998: Fix possible memory leak in _pop_preserved (crossinterp.c) (GH-147999) (GH-149365)

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(cherry picked from commit 72f29dc704)

Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
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Miss Islington (bot) 2026-05-04 16:11:04 +02:00 • committed by GitHub
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commit fc390bdcee
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Misc/NEWS.d/next/Core_and_Builtins/2026-04-02-13-25-09.gh-issue-147998.wnzkRT.rst Normal file
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@ -0,0 +1,3 @@
Fixed a memory leak in interpreter helper calls so cleanup works when an
operation falls across interpreter boundaries. Patch by Maurycy
Pawłowski-Wieroński.

2
Python/crossinterp.c
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@ -2965,7 +2965,7 @@ _pop_preserved(_PyXI_session *session,
*p_xidata = NULL;
}
else {
_PyXI_namespace *xidata = _create_sharedns(session->_preserved);
xidata = _create_sharedns(session->_preserved);
if (xidata == NULL) {
failure.code = _PyXI_ERR_PRESERVE_FAILURE;
goto error;