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bug#23726: emacs 25.0.94 crashes
From: |
Paul Eggert |
Subject: |
bug#23726: emacs 25.0.94 crashes |
Date: |
Wed, 8 Jun 2016 10:32:06 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0 |
Has Rawhide incorporated some of Florian Weimer's malloc patches? If so,
this is almost surely causing the problem. I will CC: Florian to give
him a heads-up. See:
https://sourceware.org/ml/libc-alpha/2016-06/msg00211.html
https://sourceware.org/bugzilla/show_bug.cgi?id=19564
I am surprised that you can use valgrind. Valgrind does not work on
Emacs in Fedora 23 because it mishandles the way Emacs dumps and
restores. I can use Valgrind only on temacs, not on Emacs itself. The
fact that you can use Valgrind on a dumped Emacs suggests that some of
the malloc patches have been installed on Rawhide.
For what it's worth, when I try to use valgrind on Fedora 23, I run into
what appears to be a valgrind bug that prevents Emacs from working. I
just now filed it here:
https://bugzilla.redhat.com/show_bug.cgi?id=1344082
I ran valgrind as follows:
valgrind --log-fd=3 --suppressions=valgrind.supp ./temacs 3>/tmp/vg.log
with the attached valgrind.supp file, and Emacs (emacs-25 branch, built
with 'configure --with-x=no') says "Failed select: Bad address" due to
the valgrind bug. How do you use valgrind on Rawhide?
valgrind.supp
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