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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Crash with itertools.chain.from_iterable","articleBody":"BPO | [22920](https://bugs.python.org/issue22920)\n--- | :---\nNosy | @rhettinger, @terryjreedy, @ethanfurman\nSuperseder | \u003cli\u003ebpo-14010: deeply nested itertools objects segfault\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 2014-11-22.22:03:50.109\u003e\ncreated_at = \u003cDate 2014-11-22.21:56:28.921\u003e\nlabels = ['type-crash']\ntitle = 'Crash with itertools.chain.from_iterable'\nupdated_at = \u003cDate 2014-11-22.22:03:50.107\u003e\nuser = 'https://github.com/terryjreedy'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2014-11-22.22:03:50.107\u003e\nactor = 'ethan.furman'\nassignee = 'none'\nclosed = True\nclosed_date = \u003cDate 2014-11-22.22:03:50.109\u003e\ncloser = 'ethan.furman'\ncomponents = []\ncreation = \u003cDate 2014-11-22.21:56:28.921\u003e\ncreator = 'terry.reedy'\ndependencies = []\nfiles = []\nhgrepos = []\nissue_num = 22920\nkeywords = []\nmessage_count = 1.0\nmessages = ['231534']\nnosy_count = 3.0\nnosy_names = ['rhettinger', 'terry.reedy', 'ethan.furman']\npr_nums = []\npriority = 'normal'\nresolution = 'duplicate'\nstage = 'test needed'\nstatus = 'closed'\nsuperseder = '14010'\ntype = 'crash'\nurl = 'https://bugs.python.org/issue22920'\nversions = ['Python 2.7', 'Python 3.4', 'Python 3.5']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/terryjreedy","@type":"Person","name":"terryjreedy"},"datePublished":"2014-11-22T21:56:29.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/67109/cpython/issues/67109"}