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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"possible undefined behavior in _PyObject_FastCall_Prepend","articleBody":"BPO | [31347](https://bugs.python.org/issue31347)\n--- | :---\nNosy | @benjaminp\nPRs | \u003cli\u003epython/cpython#3329\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 2017-09-05.05:25:55.447\u003e\ncreated_at = \u003cDate 2017-09-04.23:32:36.261\u003e\nlabels = ['3.7']\ntitle = 'possible undefined behavior in _PyObject_FastCall_Prepend'\nupdated_at = \u003cDate 2017-09-05.05:25:55.446\u003e\nuser = 'https://github.com/benjaminp'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2017-09-05.05:25:55.446\u003e\nactor = 'benjamin.peterson'\nassignee = 'none'\nclosed = True\nclosed_date = \u003cDate 2017-09-05.05:25:55.447\u003e\ncloser = 'benjamin.peterson'\ncomponents = []\ncreation = \u003cDate 2017-09-04.23:32:36.261\u003e\ncreator = 'benjamin.peterson'\ndependencies = []\nfiles = []\nhgrepos = []\nissue_num = 31347\nkeywords = []\nmessage_count = 2.0\nmessages = ['301283', '301298']\nnosy_count = 1.0\nnosy_names = ['benjamin.peterson']\npr_nums = ['3329']\npriority = 'normal'\nresolution = 'fixed'\nstage = 'resolved'\nstatus = 'closed'\nsuperseder = None\ntype = None\nurl = 'https://bugs.python.org/issue31347'\nversions = ['Python 3.6', 'Python 3.7']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/benjaminp","@type":"Person","name":"benjaminp"},"datePublished":"2017-09-04T23:32:36.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/75528/cpython/issues/75528"}