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[Pkg-xfce-devel] Bug#805574: thunar: renaming leads to segfault



Package: thunar
Version: 1.6.10-2
Severity: normal

Dear Maintainer,

in some cases when I rename several files (each file individually), I experience frequent segfaults.
The last file that was renamed when the segfault occured ends up with the correct name but annoyingly the thunar window is closed.

* What led up to the situation?
Renaming a file after at least one file was renamed previously. It can be the same file.

* What exactly did you do (or not do) that was effective (or ineffective)?
Minimal example:
 * (optional) create a new folder with a (new, empty) file "test"
 * open this folder with thunar
 * select file, choose rename (F2 or Mouse)
 * rename e.g. to "asdt" by selecting first 3 letters ("tes") and typing "asd", hit Enter
 * rename again to "asdft" by selecting first 3 letters ("asd") and typing "asdf", then hit Enter -> segfault

Mostly, the segfault can be reproduced when selected letters/strings are replaced or deleted. It seems that it occurs more often when the new string has different length (also shorter strings work sometimes) than the replaced string. I couldn't nail it down completely...
If you just insert the "f" in the example above, it won't do the trick - at least it didn't when I tested it once.

I tried to get a backtrace with gdb (my first time to use it, though), following this:
wiki.debian.org/HowToGetABacktrace
The segfaults occured much less frequent (only once) - I could find a reference to libc.so.6. (I don't remember the full message, something with "libc.so.6" and "SIGSEGV")
After installing the libc6-dbg package, however, I could not get thunar to crash again (when running it through gdb). Maybe the real culprit is not thunar but I'm stuck at this point with my investigations...

* What was the outcome of this action?
Thunar exited, printing a "segmentation fault". The file was renamed correctly.

Thanks for looking into this issue!

Regards,
Tobias


-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages thunar depends on:
ii  desktop-file-utils  0.22-1
ii  exo-utils           0.10.7-1
ii  libatk1.0-0         2.18.0-1
ii  libc6               2.19-22
ii  libcairo2           1.14.4-1
ii  libdbus-1-3         1.10.2-1
ii  libdbus-glib-1-2    0.102-1
ii  libexo-1-0          0.10.7-1
ii  libgdk-pixbuf2.0-0  2.32.2-1
ii  libglib2.0-0        2.46.2-1
ii  libgtk2.0-0         2.24.28-1
ii  libgudev-1.0-0      230-2
ii  libice6             2:1.0.9-1+b1
ii  libnotify4          0.7.6-2
ii  libpango-1.0-0      1.38.1-1
ii  libsm6              2:1.2.2-1+b1
ii  libthunarx-2-0      1.6.10-2
ii  libxfce4ui-1-0      4.12.1-2
ii  libxfce4util7       4.12.1-2
ii  libxfconf-0-2       4.12.0-2+b1
ii  shared-mime-info    1.5-2
ii  thunar-data         1.6.10-2

Versions of packages thunar recommends:
ii  dbus-x11             1.10.2-1
ii  gvfs                 1.26.2-1
ii  libfontconfig1       2.11.0-6.3
ii  libfreetype6         2.6-2
ii  libpangocairo-1.0-0  1.38.1-1
ii  libpangoft2-1.0-0    1.38.1-1
ii  thunar-volman        0.8.1-2
ii  tumbler              0.1.31-2+b2
pn  xdg-user-dirs        <none>
ii  xfce4-panel          4.12.0-3

Versions of packages thunar suggests:
ii  thunar-archive-plugin     0.3.1-4
ii  thunar-media-tags-plugin  0.2.1-1+b2

-- no debconf information




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