Xiang Zhang added the comment: > It does, but "-fwrapv" is not automatically added when you specify custom OPT > flags.
Indeed I think this is why the changes in #27473 and #1621 make sense. > GCC 6 optimizes away broken overflow checks. I am sorry but I don't understand this. What do you mean by broken overflow checks? Is `if (size > PY_SSIZE_T_MAX - vo.len)` broken? ---------- nosy: +xiang.zhang _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29145> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
