[Bug 834403] Re: software-center crashed with signal 5 in _XError()

[Michael Vogt]

The backtrace indicates that this is happening inside canbera:

...
#4  gdk_x_error (xdisplay=<optimized out>, error=0x7fff50bf0dc0) at /build/buildd/gtk+3.0-3.1.12/./gdk/x11/gdkmain-#5  0x00007fd41d5a301f in _XError (dpy=0x2425370, rep=<optimized out>) at ../../src/XlibInt.c:1583
#6  0x00007fd41d59fdd1 in handle_error (dpy=0x2425370, err=0x7fd408707980, in_XReply=<optimized out>) at ../../src#7  0x00007fd41d5a0d27 in _XReply (dpy=0x2425370, rep=0x7fff50bf0f60, extra=0, discard=0) at ../../src/xcb_io.c:698
#8  0x00007fd41d5852fb in XGetWindowProperty (dpy=0x2425370, w=0, property=348, offset=0, length=2, delete=#9  0x00007fd41938269e in window_is_xembed (w=<optimized out>, d=<optimized out>) at canberra-gtk-module.c:373
#10 dispatch_sound_event (d=0x32f6a30) at canberra-gtk-module.c:454
...

I suspect there is a missing
gdk_error_trap_push/gdk_error_trap_pop_ignored() here.I attach a small
test program that demos the crash.

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https://bugs.launchpad.net/bugs/834403

Title:
  software-center crashed with signal 5 in _XError()

Status in “libcanberra” package in Ubuntu:
  New
Status in “software-center” package in Ubuntu:
  Confirmed

Bug description:
  Start U-S-C > Launches briefly > Crash

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: software-center 4.1.20
  ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
  Uname: Linux 3.0.0-9-generic x86_64
  NonfreeKernelModules: wl
  Architecture: amd64
  CrashCounter: 1
  Date: Fri Aug 26 01:28:11 2011
  ExecutablePath: /usr/share/software-center/software-center-gtk3
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/software-center-gtk3
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Signal: 5
  SourcePackage: software-center
  StacktraceTop:
   ?? () from /usr/lib/libgdk-3.so.0
   ?? () from /usr/lib/libgdk-3.so.0
   _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
   ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
   _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
  Title: software-center-gtk3 crashed with signal 5 in _XError()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

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