Bug#753630: blender: Segfaults on UI actions (e.g. STL exporter options)

[Heikki Kallasjoki]

Package: blender
Version: 2.70a-2+b2
Severity: normal
Tags: upstream fixed-upstream

Dear Maintainer,

Blender has suddenly started segfaulting on some UI actions; most
reproducibly, either of the two actions below:

1. Changing any setting of the Export/Stl dialog (such as scale or the
   "apply modifiers" option).

2. Expanding any node in the list of topics in the Input tab of
   File/User preferences...

Blender's standard crash log included below.  After a quick GDB session,
I'm reasonably confident this is exactly same as upstream bug T40224
(https://developer.blender.org/T40224), which has a patch that seems to
have been included in the recently released Blender 2.71, so presumably
packaging that would also solve the issue.

# Blender 2.70 (sub 0), Commit date: 1970-01-01 00:00, Hash unknown
bpy.ops.object.editmode_toggle()  # Operator

# backtrace
blender() [0x8eb248]
/lib/x86_64-linux-gnu/libc.so.6(+0x35480) [0x7f1d1d03c480]
blender(MEM_lockfree_freeN+0x28) [0x11d7718]
blender(RNA_path_full_property_py+0x72) [0x141ff22]
blender(WM_prop_pystring_assign+0x9e) [0x90196e]
blender() [0xa8da3c]
blender() [0xa93ab4]
blender() [0xa99b1f]
blender() [0xa9bbb8]
blender() [0x8f4543]
blender() [0x8f48c8]
blender(wm_event_do_handlers+0x223) [0x8f4c33]
blender(WM_main+0x18) [0x8ed568]
blender(main+0xd6f) [0x8d58ef]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f1d1d028b45]
blender() [0x8eacf4]

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (900, 'testing'), (800, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.14-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages blender depends on:
ii  blender-data               2.70a-2
ii  fonts-droid                1:4.3-3
ii  libavcodec55               6:10.2-1
ii  libavdevice54              6:10.2-1
ii  libavformat55              6:10.2-1
ii  libavutil53                6:10.2-1
ii  libboost-date-time1.55.0   1.55.0+dfsg-2
ii  libboost-filesystem1.55.0  1.55.0+dfsg-2
ii  libboost-locale1.55.0      1.55.0+dfsg-2
ii  libboost-regex1.55.0       1.55.0+dfsg-2
ii  libboost-system1.55.0      1.55.0+dfsg-2
ii  libboost-thread1.55.0      1.55.0+dfsg-2
ii  libc6                      2.19-4
ii  libfftw3-double3           3.3.4-1
ii  libfreetype6               2.5.2-1
ii  libgcc1                    1:4.9.0-7
ii  libgl1-mesa-glx [libgl1]   10.2.1-2
ii  libglew1.10                1.10.0-3
ii  libglu1-mesa [libglu1]     9.0.0-2
ii  libgomp1                   4.9.0-7
ii  libilmbase6                1.0.1-6
ii  libjack0 [libjack-0.116]   1:0.124.1+20140122git5013bed0-3
ii  libjpeg8                   8d-2
ii  libjs-jquery               1.7.2+dfsg-3
ii  libopenal1                 1:1.14-4
ii  libopencolorio1            1.0.9~dfsg0-2
ii  libopenexr6                1.6.1-7
ii  libopenimageio1.4          1.4.10~dfsg0-2
ii  libopenjpeg5               1.5.2-2
ii  libpng12-0                 1.2.50-1
ii  libpython3.4               3.4.1-6
ii  libsdl1.2debian            1.2.15-9
ii  libsndfile1                1.0.25-9
ii  libspnav0                  0.2.2-1
ii  libstdc++6                 4.9.0-7
ii  libswscale2                6:10.2-1
ii  libtiff5                   4.0.3-9
ii  libx11-6                   2:1.6.2-2
ii  libxi6                     2:1.7.2-1
ii  libxxf86vm1                1:1.1.3-1
ii  zlib1g                     1:1.2.8.dfsg-1

blender recommends no packages.

Versions of packages blender suggests:
pn  yafaray-exporter  <none>

-- no debconf information