Bugs item #2818573, was opened at 2009-07-08 14:28
Message generated for change (Tracker Item Submitted) made by nobody
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: taskBarIconDelete segfaults when you use it twice
Initial Comment:
Sorry for the unconventional bug report, but I posted this to the mailing list
wxhaskell-user before I discovered this bug-tracker:
I've discovered that taskBarIconDelete crashes when you use it twice. I first
encountered this on Windows when I used it in the "on close" attribute for
removing the icon when I close the program. I then tried to reproduce this on
Linux and it first seemed to be a Windows-only problem. But when I removed the
"propagateEvent" on Linux I couldn't close my program the first time, only the
icon was deleted. The second time I tried to close the program it segfaulted.
I first thought it correlated with the use of evtHandlerOnTaskBarIconEvent,
because removing this seemed to fix everything. (maybe this is an uncorrelated,
second, bug?)
But then I thought by myself: It doesn't make sense that the program crashes on
Linux on the second close attempt.
So wrote a minimal example to try out what happens when I delete the
taskbar-icon more than one time. And it segfaulted, like I expected. On
both, Linux and Windows.
When I delete it once, I can close my application afterwards successfully. When
I delete it twice, it segfaults.
Here are the environments I tested my program in:
* Windows XP using GHC 6.10.3 with wx-0.11.1.2 with wxWidgets-2.8.10
* Ubuntu 9.04 using GHC 6.10.3 with wx-0.11.1.2 with wxWidgets-2.8.9.1
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