From: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
To: Mack Lobell <macklobell@hotmail.com>
CC: gcc-bugs@gcc.gnu.org, <gcc-gnats@gcc.gnu.org>
Subject: Re: c/8962: "-O2 -mmmx" makes gcc seg fault
Date: Sat, 21 Dec 2002 10:55:13 -0600 (CST)
> did the following:
Thanks for your experiments. I think there is no need for you to try an
even newer snapshot. The only thing you could do is try to strip down the
testcase as much as possible, presently it is rather long. We usually do
that by first stripping off the line number lines using
perl -pi -e 's/^#.*\n//g;' expr.i
so that the compiler gives the _actual_ line number in this file when it
crashes. Then try to delete as much stuff from the file as you can.
Usually, one can get it down to 20-30 lines and still see the crash. But
be warned that this can be a tediuous process that could take 30 minutes
to an hour, if you're not frequently doing such things.
Thanks for your help
Wolfgang
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Wolfgang Bangerth email: bangerth@ticam.utexas.edu
www: http://www.ticam.utexas.edu/~bangerth