Debian Bug report logs - #448851
w3m-img: segfault

[Message part 1 (text/plain, inline)]
Package: w3m-img
Version: 0.5.1-5.1+b1
Severity: normal

I do most of my work from within a persistent Screen session, and I
regularly kill off urxvt and Xorg.  This means that after the first
couple of days, WINDOWID will be set (within the screen session) to a
window that no longer exists.

Normally this does not bother me; w3m-img simply stops working (images
aren't displayed inline).  Today, it appeared to cause a segfault.

I invoked w3m thusly:

    w3m http://lists.gnu.org/mailman/listinfo/screen-users

It segfaulted -- not immediately, but a second or so after displaying
the text.  This is consistent with the time it would take w3m to fetch
the inline image(s).  WINDOWID was set to 8388612.  Re-running the
above command caused w3m to segfault every time, after the
aforementioned short delay.  w3m managed to print

    4/4 images loaded

Making the terminal smaller (fewer COLUMNS and ROWS), I got

    3/3 images loaded

instead.  Making the terminal larger, w3m printed "HTTP/1.1 200 OK",
and the entire screen was cleared, printing "Aborted" in the top left
and the shell prompt on the next line.

Suspecting w3m-img was at fault, I tried

    env -u WINDOWID w3m http://lists.gnu.org/mailman/listinfo/screen-users

This did not result in a segfault.  Furthermore, it displayed the
images inline onscreen!

Attached are the output of `env' and `xprop' (after clicking on the
urxvt window).  I'm not sure WHY it's segfaulting; hopefully I've
provided enough information.  I am running a custom compilation of
urxvt from CVS:

$ urxvt -h
rxvt-unicode (urxvt) v8.3 - released: 2007-08-01
options: xft,styles,combining,blink,encodings=eu+vn+jp+jp-ext+kr+zh+zh-ext,frills,selectionscrolling,wheel,cursorBlink,pointerBlank,scrollbars=NONE
Usage: urxvt [-help] [--help]
 [-display string] [-tn string] [-geometry geometry] [-C] [-iconic] [-/+rv]
 [-/+ls] [-/+j] [-/+ss] [-/+ptab] [-/+si] [-/+sk] [-/+sw] [-/+ut] [-/+vb]
 [-/+tcw] [-/+insecure] [-/+uc] [-/+bc] [-/+pb] [-bg color] [-fg color]
 [-hc color] [-cr color] [-pr color] [-pr2 color] [-bd color] [-fn fontname]
 [-fb fontname] [-fi fontname] [-fbi fontname] [-/+is] [-name string]
 [-title string] [-n string] [-sl number] [-embed windowid] [-depth number]
 [-/+override-redirect] [-pty-fd fileno] [-/+hold] [-w number] [-b number]
 [-/+bl] [-/+sbg] [-lsp number] [-mod modifier] [-/+ssc] [-/+ssr]
 [-xrm string] [-e command arg ...]
$ ls -hl `type -p urxvt`
-rwxr-xr-x 1 twb users 2.5M 2007-10-06 01:42 /home/twb/.bin-x86_64-unknown-linux-gnu/urxvt

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (990, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.22-3-amd64 (SMP w/1 CPU core)
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages w3m-img depends on:
ii  libc6                       2.6.1-6      GNU C Library: Shared libraries
ii  libgc1c2                    1:6.8-1.1    conservative garbage collector for
ii  libgdk-pixbuf2              0.22.0-11    The GdkPixBuf image library, gtk+ 
ii  libglib1.2ldbl              1.2.10-19    The GLib library of C routines
ii  libx11-6                    2:1.0.3-7    X11 client-side library
ii  w3m                         0.5.1-5.1+b1 WWW browsable pager with excellent

w3m-img recommends no packages.

-- no debconf information

[env.txt (application/octet-stream, attachment)]
[xprop.txt (text/x-pascal, attachment)]
[xwininfo.txt (text/plain, attachment)]
[Message part 1 (text/plain, inline)]
tags 448851 + unreproducible
thanks

Upstream maintainer and I could not reproduce this problem.
So, I am afraid to close this bug.
If this problem still exists, please reopen it.
-- 
Regards,
	dai

GPG Fingerprint = 0B29 D88E 42E6 B765 B8D8 EA50 7839 619D D439 668E

[signature.asc (application/pgp-signature, inline)]
d+deb@vdr.jp wrote:
> tags 448851 + unreproducible
> thanks
> 
> Upstream maintainer and I could not reproduce this problem.
> So, I am afraid to close this bug.
> If this problem still exists, please reopen it.

Thank you for investigating.  I don't run X anymore, so if the issue
is still there, I can't reproduce it.

(Now I run w3m in screen in fbcon, telling w3m that TERM=jfbterm so it
will display images inline.)

Debian Bug report logs - #448851 w3m-img: segfault

Debian Bug report logs - #448851
w3m-img: segfault