[issue9530] integer undefined behaviors
Mark Dickinson
report at bugs.python.org
Mon Nov 21 13:39:29 CET 2011
Mark Dickinson <dickinsm at gmail.com> added the comment:
> I'd be happy to re-run the tests sometime.
Yes, please! Alternatively, if there are easy instructions for us to re-run these tests, that would be valuable, too. Do I understand correctly that you have a publicly available extension to LLVM for this?
> Basically it'll act as a more powerful -ftrapv, and the error message will be much better than "aborted".
Indeed---there were a number of places where tracking down the exact cause of the error using a combination of -ftrapv and gdb was painful. :-)
I'm aware of two current issues: one in Python/formatter_unicode.c, and one in Modules/timemodule.c. I'll try to fix these shortly.
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<http://bugs.python.org/issue9530>
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