From: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
Date: Mon, 4 May 2026 13:45:31 +0000 (+0200)
Subject: gh-147998: Fix possible memory leak in _pop_preserved (crossinterp.c) (GH-147999)
X-Git-Tag: v3.15.0b1~77
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=72f29dc704812aa846b10323a31743d6df37cc2c;p=thirdparty%2FPython%2Fcpython.git

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

diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2026-04-02-13-25-09.gh-issue-147998.wnzkRT.rst b/Misc/NEWS.d/next/Core_and_Builtins/2026-04-02-13-25-09.gh-issue-147998.wnzkRT.rst
new file mode 100644
index 000000000000..e83d9929eae5
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2026-04-02-13-25-09.gh-issue-147998.wnzkRT.rst
@@ -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.
diff --git a/Python/crossinterp.c b/Python/crossinterp.c
index 4cd4b32ef906..6b489bf03f86 100644
--- a/Python/crossinterp.c
+++ b/Python/crossinterp.c
@@ -3006,7 +3006,7 @@ _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;