REIX Tony added the comment: With XLC v13 -O2, using -qalias=noansi for building Objects/longobject.o only and not for all the other .o files did fix the 10 more failed tests I see with -O2 compared to -O0 (7-8 failed tests). So, ANSI-aliasing in Objects/longobject.c is the issue.
About -fwrapv , I have to find an equivalent for XLC. I've given a first try with GCC 4.8.4 . I've got about 44 failed tests compared to 7-8 with XLC. To be improved. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27725> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com