New submission from Xiang Zhang: vargs2 could be va_end()ed twice in PyUnicode_FromFormatV when format contains non-ascii characters. Once va_end()ed, vargs2 is undefined. So this could lead to undefined behaviour.
---------- components: Interpreter Core files: PyUnicode_FromFormatV.patch keywords: patch messages: 278496 nosy: christian.heimes, haypo, serhiy.storchaka, xiang.zhang priority: normal severity: normal stage: patch review status: open title: va_end twice in PyUnicode_FromFormatV type: behavior versions: Python 3.6, Python 3.7 Added file: http://bugs.python.org/file45059/PyUnicode_FromFormatV.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue28417> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com