[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

bug#19959: 25.0.50; can't bootstrap -- temacs dumps core

From: Thomas Fitzsimmons
Subject: bug#19959: 25.0.50; can't bootstrap -- temacs dumps core
Date: Tue, 03 Mar 2015 11:23:28 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)

Glenn Morris <address@hidden> writes:

> Nicolas Richard wrote:
>> In GNU Emacs (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
> FWIW, http://hydra.nixos.org/build/19982110 flagged this yesterday.
> It seems to be specific to 32-bit builds.
> (The precise introduction is masked by the previous total build failure
> due to a typo.)

This commit breaks bootstrap for me:

commit b74db6347cf5cac1ebd4c604fd5691c588fd8e32
Author: Paul Eggert <address@hidden>
Date:   Tue Feb 24 16:34:13 2015 -0800

    Backtrace after malloc arena is corrupted
    Without this change, if the malloc arena is corrupted and then
    'backtrace' is called, the backtrace can crash because 'backtrace'
    calls 'malloc'.  For more, please see:
    * emacs.c (main): Initialize tables used by 'backtrace'.
    * sysdep.c (emacs_backtrace): Document the newly used part of the API.

On my system's glibc version, glibc-2.16-30.fc18.i686, it seems that a
zero size argument to backtrace causes a segfault; minimal example

$ gcc -Wall backtrace.c
$ env -i ./a.out
Segmentation fault (core dumped)


Attachment: backtrace.c
Description: Text document

reply via email to

[Prev in Thread] Current Thread [Next in Thread]