https://github.com/python/cpython/commit/00a25859a94b6bf34e58a5176e2befab7e273d20
commit: 00a25859a94b6bf34e58a5176e2befab7e273d20
branch: main
author: Pieter Eendebak <[email protected]>
committer: kumaraditya303 <[email protected]>
date: 2026-03-13T15:42:19Z
summary:
gh-145376: Fix GC tracking in `structseq.__replace__` (#145820)
files:
A
Misc/NEWS.d/next/Core_and_Builtins/2026-03-11-21-27-28.gh-issue-145376.LfDvyw.rst
M Lib/test/test_structseq.py
M Objects/structseq.c
diff --git a/Lib/test/test_structseq.py b/Lib/test/test_structseq.py
index 9622151143cd78..74506fc54de50e 100644
--- a/Lib/test/test_structseq.py
+++ b/Lib/test/test_structseq.py
@@ -1,4 +1,5 @@
import copy
+import gc
import os
import pickle
import re
@@ -355,6 +356,14 @@ def test_reference_cycle(self):
type(t).refcyle = t
"""))
+ def test_replace_gc_tracked(self):
+ # Verify that __replace__ results are properly GC-tracked
+ time_struct = time.gmtime(0)
+ lst = []
+ replaced_struct = time_struct.__replace__(tm_year=lst)
+ lst.append(replaced_struct)
+
+ self.assertTrue(gc.is_tracked(replaced_struct))
if __name__ == "__main__":
unittest.main()
diff --git
a/Misc/NEWS.d/next/Core_and_Builtins/2026-03-11-21-27-28.gh-issue-145376.LfDvyw.rst
b/Misc/NEWS.d/next/Core_and_Builtins/2026-03-11-21-27-28.gh-issue-145376.LfDvyw.rst
new file mode 100644
index 00000000000000..476be205da8001
--- /dev/null
+++
b/Misc/NEWS.d/next/Core_and_Builtins/2026-03-11-21-27-28.gh-issue-145376.LfDvyw.rst
@@ -0,0 +1 @@
+Fix GC tracking in ``structseq.__replace__()``.
diff --git a/Objects/structseq.c b/Objects/structseq.c
index b8bb041f0cff21..8fa9cbba3bcce3 100644
--- a/Objects/structseq.c
+++ b/Objects/structseq.c
@@ -445,6 +445,7 @@ structseq_replace(PyObject *op, PyObject *args, PyObject
*kwargs)
}
}
+ _PyObject_GC_TRACK(result);
return (PyObject *)result;
error:
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