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Author William Bowling
Recipients William Bowling, serhiy.storchaka
Date 2016-01-04.03:02:19
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Also a very similar source causes a slightly different crash (heap-buffer-overflow instead of heap-use-after-free):

./python -c 'with open("", "wb") as f: f.write(b"\x61\x73\x00\x0a\x79\x6e\x63\x5c\x0a\x00\x0d\xdd")'

Python 3.5.1+ (default, Jan  4 2016, 00:05:40)

Attached the asan report
Date User Action Args
2016-01-04 03:02:20William Bowlingsetrecipients: + William Bowling, serhiy.storchaka
2016-01-04 03:02:20William Bowlingsetmessageid: <>
2016-01-04 03:02:20William Bowlinglinkissue26000 messages
2016-01-04 03:02:20William Bowlingcreate