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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"python: Modules/gcmodule.c:379: visit_decref: Assertion `((gc)-\u003egc.gc_refs \u003e\u003e (1)) != 0' failed.","articleBody":"BPO | [20526](https://bugs.python.org/issue20526)\n--- | :---\nNosy | @pitrou, @vstinner, @larryhastings, @ned-deily, @serhiy-storchaka\nPRs | \u003cli\u003epython/cpython#19120\u003c/li\u003e\u003cli\u003epython/cpython#19136\u003c/li\u003e\u003cli\u003epython/cpython#19137\u003c/li\u003e\nFiles | \u003cli\u003e[asyncio_gc.py](https://bugs.python.org/file33939/asyncio_gc.py \"Uploaded as text/plain at 2014-02-06.09:14:13 by @vstinner\")\u003c/li\u003e\u003cli\u003e[threading_shutdown_interrupted.py](https://bugs.python.org/file34053/threading_shutdown_interrupted.py \"Uploaded as text/plain at 2014-02-12.00:19:20 by @vstinner\")\u003c/li\u003e\u003cli\u003e[revert_19466.patch](https://bugs.python.org/file34056/revert_19466.patch \"Uploaded as text/plain at 2014-02-12.09:54:08 by @vstinner\")\u003c/li\u003e\n\n\u003csup\u003e*Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.*\u003c/sup\u003e\n\n\u003cdetails\u003e\u003csummary\u003eShow more details\u003c/summary\u003e\u003cp\u003e\n\nGitHub fields:\n```python\nassignee = None\nclosed_at = \u003cDate 2020-03-24.16:58:23.930\u003e\ncreated_at = \u003cDate 2014-02-06.09:14:02.239\u003e\nlabels = ['interpreter-core', '3.7', '3.8', '3.9', 'type-crash']\ntitle = \"python: Modules/gcmodule.c:379: visit_decref: Assertion `((gc)-\u003egc.gc_refs \u003e\u003e (1)) != 0' failed.\"\nupdated_at = \u003cDate 2020-03-24.17:01:40.129\u003e\nuser = 'https://github.com/vstinner'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2020-03-24.17:01:40.129\u003e\nactor = 'vstinner'\nassignee = 'none'\nclosed = True\nclosed_date = \u003cDate 2020-03-24.16:58:23.930\u003e\ncloser = 'vstinner'\ncomponents = ['Interpreter Core']\ncreation = \u003cDate 2014-02-06.09:14:02.239\u003e\ncreator = 'vstinner'\ndependencies = []\nfiles = ['33939', '34053', '34056']\nhgrepos = []\nissue_num = 20526\nkeywords = ['patch']\nmessage_count = 30.0\nmessages = ['210368', '210982', '210999', '211007', '211013', '211046', '211047', '211049', '211050', '211070', '211146', '211150', '211153', '213793', '214858', '214859', '214863', '214866', '214867', '214887', '214890', '214894', '364851', '364878', '364879', '364935', '364938', '364943', '364944', '364945']\nnosy_count = 9.0\nnosy_names = ['pitrou', 'vstinner', 'larry', 'ned.deily', 'Arfrever', 'neologix', 'python-dev', 'serhiy.storchaka', 'sebastien.renard']\npr_nums = ['19120', '19136', '19137']\npriority = 'high'\nresolution = 'fixed'\nstage = 'resolved'\nstatus = 'closed'\nsuperseder = None\ntype = 'crash'\nurl = 'https://bugs.python.org/issue20526'\nversions = ['Python 3.7', 'Python 3.8', 'Python 3.9']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/vstinner","@type":"Person","name":"vstinner"},"datePublished":"2014-02-06T09:14:02.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":30},"url":"https://github.com/64725/cpython/issues/64725"}