René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"hamt.c: sub_node leaked in bitmap_assoc and bitmap_without","articleBody":"# Bug report\n\n### Bug description:\n\n# Bug report\n\n### Bug description:\n\nParent issue ：https://github.com/python/cpython/issues/146102\nGlist:https://gist.github.com/devdanzin/332a120e4c7750e8a7aff47419311696\n\nTwo analogous bugs:\n1. hamt_node_bitmap_assoc (line 704): Recursive hamt_node_assoc returns new sub_node, then hamt_node_bitmap_clone fails → sub_node leaked. Line 755 correctly DECREFs.\n2. hamt_node_bitmap_without (line 997): Same pattern. Line 968 correctly DECREFs.\n\n### Fix:\n\nAdd Py_DECREF(sub_node) before return NULL/return W_ERROR\n\n\n### CPython versions tested on:\n\nCPython main branch\n\n### Operating systems tested on:\n\n_No response_\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-150179\n* gh-150301\n* gh-150303\n* gh-150302\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/lpyu001","@type":"Person","name":"lpyu001"},"datePublished":"2026-05-21T07:47:38.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/150178/cpython/issues/150178"}