From: pengyu lee <lipengyu@kylinos.cn>
Date: Sat, 23 May 2026 08:33:40 +0000 (+0800)
Subject: gh-150178: Fix refcount leaks in hamt allocation failure paths (#150179)
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=32823af153b76b7042fbce28ea8a6e0c3c4f1ca8;p=thirdparty%2FPython%2Fcpython.git

gh-150178: Fix refcount leaks in hamt allocation failure paths (#150179)
---

diff --git a/Python/hamt.c b/Python/hamt.c
index e4719e71a525..95998ae5062a 100644
--- a/Python/hamt.c
+++ b/Python/hamt.c
@@ -702,6 +702,7 @@ hamt_node_bitmap_assoc(PyHamtNode_Bitmap *self,
 
             PyHamtNode_Bitmap *ret = hamt_node_bitmap_clone(self);
             if (ret == NULL) {
+                Py_DECREF(sub_node);
                 return NULL;
             }
             Py_SETREF(ret->b_array[val_idx], (PyObject*)sub_node);
@@ -994,6 +995,7 @@ hamt_node_bitmap_without(PyHamtNode_Bitmap *self,
 
                 PyHamtNode_Bitmap *clone = hamt_node_bitmap_clone(self);
                 if (clone == NULL) {
+                    Py_DECREF(sub_node);
                     return W_ERROR;
                 }