SIGSEGV in meta_workspace_index ()

[Hernando Torque]

Binary package hint: unity

When the update-manager's "Updating Cache" window closes while in (app-)expose mode, its shadow stays visible and clicking it causes the segfault.

To reproduce:

1. Open the update-manager,
2. Click on the 'Check' button,
3. (Authenticate and) quickly right-click the update-manager's launcher to initiate the app-expose mode,
4. After the "Updating Cache" window closes, its shadow should be visible and clickable -> crash.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: unity 0.2.12-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-5.6-generic 2.6.35-rc3
Uname: Linux 2.6.35-5-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Fri Jun 25 16:12:23 2010
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity

[Hernando Torque (htorque)]

It's maybe easier to run

(gedit &) ; sleep 5 ; pkill gedit

and start the app-expose mode (for gedit, obviously) during the sleep.

[Hernando Torque (htorque)]

Unity 0.2.20-0ubuntu2: clicking the shadow now simply leaves the expose mode. So, there's no longer a crash but I guess the expose mode should be left with the application/window disappearing.

[Mikkel Kamstrup Erlandsen (kamstrup)]

I can still reproduce this on 0.2.26

[Neil J. Patel (njpatel)]

If a window dies during the showing of the expose and there is only one or less windows open, we now end the expose. In the other case, we at least don't show the shadow anymore. It would be interesting to relayout the windows to fit the size, but that's another bug :)

[Hernando Torque (htorque)]

Also fixed in Maverick.