All GNUstep-based graphical apps fault with SIGSEGV

[Vecu BOSSEUR <vecu.bosseur@gmail.com>]

Hello, the List.

I run Debian Wheezy (testing) on amd64 and with a few packages from
Sid (unstable), i.e. the kernel.

All GNUstep-based graphical apps fault with SIGSEGV ; if I try lets
say AClock, I get:

[ WITH libpixman-1-0 0.22.2-1 ]

testr@valentin-laptop:~$ AClock
Segmentation fault
testr@valentin-laptop:~$

And dmesg says:

AClock[28182]: segfault at 8 ip 00007f06f8208c5e sp 00007fff532feeb0
error 4 in libpixman-1.so.0.22.2[7f06f81d6000+6f000]

[/ WITH libpixman-1-0 0.22.2-1 ]


[ WITH libpixman-1-0 0.23.2-1 ]

testr@valentin-laptop:~$ AClock
Segmentation fault
testr@valentin-laptop:~$

AClock[29355]: segfault at 8 ip 00007f40357dfac3 sp 00007fffb565e840
error 4 in libpixman-1.so.0.23.2[7f40357ab000+73000]

[/ WITH libpixman-1-0 0.23.2-1 ]

But this bug happens with all GNUstep-based graphical apps. I've not
been able to install GNUstep from experimental.

I hesitate to file a bug report on Debian BTS because one can suspect
the bug be in "gnustep-back0.18-cairo", "libcairo2", or
"libpixman-1-0" for example.

I've made traces of AClock (aclock.app package) using 'strace' and
'strace' tools, and I've made both partial and full core dumps.

Here follows the listing of my core files I can upload somewhere upon request.

testr@valentin-laptop:~$ ls -l core_AClock\=aclock.app_*
-r-------- 1 testr testr   8708096 18 août  17:04
core_AClock=aclock.app_DEFAULT_libpixman_0.22.2-1
-r--r--r-- 1 testr testr   1309463 18 août  17:12
core_AClock=aclock.app_DEFAULT_libpixman_0.22.2-1.tar.bz2
-r-------- 1 testr testr   8744960 18 août  17:07
core_AClock=aclock.app_DEFAULT_libpixman_0.23.2-1
-r--r--r-- 1 testr testr   1297619 18 août  17:12
core_AClock=aclock.app_DEFAULT_libpixman_0.23.2-1.tar.bz2
-r-------- 1 testr testr 141176832 18 août  17:01
core_AClock=aclock.app_FULL_libpixman_0.22.2-1
-r--r--r-- 1 testr testr  10614028 18 août  17:12
core_AClock=aclock.app_FULL_libpixman_0.22.2-1.tar.bz2
-r-------- 1 testr testr 141225984 18 août  16:56
core_AClock=aclock.app_FULL_libpixman_0.23.2-1
-r--r--r-- 1 testr testr  10582652 18 août  17:12
core_AClock=aclock.app_FULL_libpixman_0.23.2-1.tar.bz2
testr@valentin-laptop:~$

Are you affected too by tis bug ?

Please, tell me what I can do to help sort this problem out.

You can find the "ltrace" trace in appendix.

I can't join the "strace" trace nor publish it on paste.debian.org
because of its size.

I you want the "strace" trace or any of the 4 aforementioned core
dumps, please ask me them directly at :
vecu.bosseur@gmail.com

Sincerely,
Valentin QUEQUET

APPENDIX:

testr@valentin-laptop:~$ cat AClock.ltrace.txt
__libc_start_main(0x401320, 1, 0x7fffeacd43e8, 0x407340, 0x407330
<unfinished ...>
__objc_exec_class(0x60e3c0, 0x7fffeacd43e8, 0x7fffeacd43f8, 0,
0x7fc5a3cf6320) = 0
__objc_exec_class(0x60bbc0, 0, 0x1182060, 0, 0x1229890) = 0
__objc_exec_class(0x609640, 0, 0x1182060, 0, 0x121de70) = 0
objc_get_class(0x407424, 0x7fffeacd43e8, 0x7fffeacd43f8, 0, 116) =
0x7fc5a4b9cea0
objc_msg_lookup(0x7fc5a4b9cea0, 0x6095e0, 0x407434, 0x407424, 108) =
0x7fc5a4760910
objc_get_class(0x407436, 272, 0, 0x7fc5a45c82a0, 0x7fc5a3cf6fc8) =
0x7fc5a52b0860
objc_msg_lookup(0x7fc5a52b0860, 0x6095f0, 0x407442, 0x407436, 110) =
0x7fc5a4e45b10
objc_msg_lookup(0x12def70, 0x609600, 0, 0x1700000001, 1) = 0x7fc5a4e460e0
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++
testr@valentin-laptop:~$