Package: auto-multiple-choice
Version: 1.2.1-2
Severity: important

--- Please enter the report below this line. ---

When clicking on "Print papers" on the GUI, the application crashes.
I set severity important because one of the main goal of the
application is to print copies.

~~~
$ auto-multiple-choice
*** Error in `auto-multiple-choice gui': free(): invalid pointer:
0x0000000003a1f2c4 ***
Abandon
~~~

The behavior is reproducible with any of my projects, even the example ones.

Steps to reproduce:

* Project > New > Project name = test > New Project
* template > Forward
* [En] Documentation > Simple example > Apply
* Update documents > Layout detection > Print papers
* Crash :(

GDB info:

~~~
$ gdb --args perl /usr/bin/auto-multiple-choice
GNU gdb (Debian 7.7.1+dfsg-3) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from perl...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/perl /usr/bin/auto-multiple-choice
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
process 9217 is executing new program: /usr/bin/perl
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffeab75700 (LWP 9221)]
*** Error in `auto-multiple-choice gui': free(): invalid pointer:
0x0000000001e5df74 ***

Program received signal SIGABRT, Aborted.
0x00007ffff6f89077 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 ../nptl/sysdeps/unix/sysv/linux/raise.c: Aucun fichier ou dossier de ce type.
(gdb) thread apply all bt

Thread 2 (Thread 0x7fffeab75700 (LWP 9221)):
#0  0x00007ffff70310ed in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ffff65b4ee4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff65b5272 in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff1083f06 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007ffff65db925 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff73040a4 in start_thread (arg=0x7fffeab75700) at
pthread_create.c:309
#6  0x00007ffff7039c2d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7ffff7fc4700 (LWP 9217)):
#0  0x00007ffff6f89077 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007ffff6f8a458 in __GI_abort () at abort.c:89
#2  0x00007ffff6fc6fb4 in __libc_message (do_abort=do_abort@entry=1,
fmt=fmt@entry=0x7ffff70b9bc0 "*** Error in `%s': %s: 0x%s ***\n")
    at ../sysdeps/posix/libc_fatal.c:175
#3  0x00007ffff6fcc78e in malloc_printerr (action=1,
str=0x7ffff70b5c7e "free(): invalid pointer", ptr=<optimized out>) at
malloc.c:4996
#4  0x00007ffff6fcd496 in _int_free (av=<optimized out>, p=<optimized
out>, have_lock=0) at malloc.c:3840
#5  0x00007fffe899c2b1 in ?? () from
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Net/CUPS/CUPS.so
#6  0x00007ffff7aea5ab in Perl_pp_entersub () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#7  0x00007ffff7ae2e46 in Perl_runops_standard () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#8  0x00007ffff7a6c3e5 in Perl_call_sv () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#9  0x00007ffff7af421f in ?? () from /usr/lib/x86_64-linux-gnu/libperl.so.5.20
#10 0x00007ffff7af4c40 in Perl_sv_clear () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#11 0x00007ffff7af4ffa in Perl_sv_free2 () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#12 0x00007ffff7ae1ec0 in Perl_av_clear () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#13 0x00007ffff7b1986b in Perl_leave_scope () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#14 0x00007ffff7b242e8 in Perl_pp_leave () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#15 0x00007ffff7ae2e46 in Perl_runops_standard () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#16 0x00007ffff7a6c3e5 in Perl_call_sv () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#17 0x00007ffff6af09fe in ?? () from
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Glib/Glib.so
#18 0x00007ffff688a245 in g_closure_invoke () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007ffff689bf3c in ?? () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff68a4748 in g_signal_emit_valist () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007ffff68a49af in g_signal_emit () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007ffff1aaa600 in ?? () from
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#23 0x00007ffff1b4c01f in ?? () from
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#24 0x00007ffff688a245 in g_closure_invoke () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x00007ffff689be32 in ?? () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#26 0x00007ffff68a4255 in g_signal_emit_valist () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007ffff68a49af in g_signal_emit () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff1c5c40c in ?? () from
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#29 0x00007ffff1b4a774 in gtk_propagate_event () from
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#30 0x00007ffff1b4abeb in gtk_main_do_event () from
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#31 0x00007ffff17c403c in ?? () from
/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#32 0x00007ffff65b4c5d in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007ffff65b4f48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007ffff65b5272 in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007ffff1b49bc7 in gtk_main () from
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#36 0x00007ffff210e1a9 in ?? () from
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Gtk2/Gtk2.so
#37 0x00007ffff7aea5ab in Perl_pp_entersub () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#38 0x00007ffff7ae2e46 in Perl_runops_standard () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#39 0x00007ffff7a73e0e in perl_run () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.20
#40 0x0000000000400e19 in main ()
~~~

--- System information. ---
Architecture: amd64
Kernel:       Linux 3.16-3-amd64

Debian Release: jessie/sid
  990 testing         security.debian.org
  990 testing         http.debian.net
  500 unstable        http.debian.net
  500 stable          security.debian.org
  500 stable          http.debian.net
  500 stable          dl.google.com
    1 experimental    http.debian.net

--- Package information. ---
Depends                            (Version) | Installed
============================================- -=============
libc6                               (>= 2.8) |
libgcc1                         (>= 1:4.1.1) |
libnetpbm10                                  |
libopencv-core2.4                            |
libopencv-highgui2.4                         |
libopencv-imgproc2.4                         |
libstdc  6                        (>= 4.1.1) |
auto-multiple-choice-common      (= 1.2.1-2) |


Recommends                     (Version) | Installed
========================================- -============
auto-multiple-choice-doc     (= 1.2.1-2) | 1.2.1-2


Suggests                 (Version) | Installed
==================================- -===========
texstudio                          |
 OR texmaker                       |
 OR kile                           |
openoffice.org-calc                |


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