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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Py_XDECREF() expands its argument multiple times","articleBody":"BPO | [17206](https://bugs.python.org/issue17206)\n--- | :---\nNosy | @malemburg, @brettcannon, @jcea, @amauryfa, @mdickinson, @vstinner, @larryhastings, @benjaminp, @jkloth, @asvetlov, @davidmalcolm, @markshannon\nPRs | \u003cli\u003epython/cpython#30855\u003c/li\u003e\nFiles | \u003cli\u003e[17206.diff](https://bugs.python.org/file29439/17206.diff \"Uploaded as text/plain at 2013-03-18.06:36:49 by ilblackdragon\"): Patch for 17206\u003c/li\u003e\u003cli\u003e[perf.log](https://bugs.python.org/file29440/perf.log \"Uploaded as text/plain at 2013-03-18.06:47:27 by ilblackdragon\"): Benchmark comparison for 17206 patch\u003c/li\u003e\u003cli\u003e[perf-linux.log](https://bugs.python.org/file29523/perf-linux.log \"Uploaded as text/x-log at 2013-03-21.02:40:22 by ilblackdragon\"): Benchmark comparison for 17206 in Ubuntu + GCC\u003c/li\u003e\u003cli\u003e[asmdiff_17206.zip](https://bugs.python.org/file29524/asmdiff_17206.zip \"Uploaded as application/zip at 2013-03-21.02:51:17 by ilblackdragon\"): Preprocessed, object and disassembled files of ceval module with and without patch.\u003c/li\u003e\u003cli\u003e[17206-2.diff](https://bugs.python.org/file29617/17206-2.diff \"Uploaded as text/plain at 2013-03-31.05:10:52 by ilblackdragon\"): Updated patch for 17206\u003c/li\u003e\u003cli\u003e[17206-3.diff](https://bugs.python.org/file29660/17206-3.diff \"Uploaded as text/plain at 2013-04-03.05:07:34 by ilblackdragon\")\u003c/li\u003e\u003cli\u003e[object.patch](https://bugs.python.org/file30625/object.patch \"Uploaded as text/plain at 2013-06-17.19:10:25 by @jkloth\"): Patch reusing _py_tmp\u003c/li\u003e\u003cli\u003e[object-2.patch](https://bugs.python.org/file30690/object-2.patch \"Uploaded as text/plain at 2013-06-24.17:20:35 by @jkloth\")\u003c/li\u003e\u003cli\u003e[project.diff](https://bugs.python.org/file30750/project.diff \"Uploaded as text/plain at 2013-07-02.15:28:24 by @jkloth\")\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 2016-09-25.15:52:53.332\u003e\ncreated_at = \u003cDate 2013-02-14.16:07:37.057\u003e\nlabels = ['interpreter-core', 'type-bug']\ntitle = 'Py_XDECREF() expands its argument multiple times'\nupdated_at = \u003cDate 2022-01-30.17:51:28.343\u003e\nuser = 'https://github.com/davidmalcolm'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2022-01-30.17:51:28.343\u003e\nactor = 'Mark.Shannon'\nassignee = 'none'\nclosed = True\nclosed_date = \u003cDate 2016-09-25.15:52:53.332\u003e\ncloser = 'SilentGhost'\ncomponents = ['Interpreter Core']\ncreation = \u003cDate 2013-02-14.16:07:37.057\u003e\ncreator = 'dmalcolm'\ndependencies = []\nfiles = ['29439', '29440', '29523', '29524', '29617', '29660', '30625', '30690', '30750']\nhgrepos = []\nissue_num = 17206\nkeywords = ['patch']\nmessage_count = 48.0\nmessages = ['182107', '182111', '182209', '184430', '184431', '184432', '184433', '184488', '184492', '184495', '184833', '184834', '184855', '185396', '185614', '185623', '185625', '185627', '185643', '185689', '185889', '186386', '189362', '189379', '190156', '190623', '190628', '191364', '191731', '191752', '191780', '191785', '191786', '191791', '191792', '191877', '191878', '191879', '191880', '191881', '191883', '191888', '191919', '192167', '192204', '192205', '192206', '192507']\nnosy_count = 15.0\nnosy_names = ['lemburg', 'brett.cannon', 'jcea', 'amaury.forgeotdarc', 'mark.dickinson', 'vstinner', 'larry', 'benjamin.peterson', 'jkloth', 'Arfrever', 'asvetlov', 'dmalcolm', 'Mark.Shannon', 'python-dev', 'ilblackdragon']\npr_nums = ['30855']\npriority = 'normal'\nresolution = 'fixed'\nstage = 'resolved'\nstatus = 'closed'\nsuperseder = None\ntype = 'behavior'\nurl = 'https://bugs.python.org/issue17206'\nversions = ['Python 3.4']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/davidmalcolm","@type":"Person","name":"davidmalcolm"},"datePublished":"2013-02-14T16:07:37.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":48},"url":"https://github.com/61408/cpython/issues/61408"}