Need help debugging a memory corruption bug in shfldr_unixfs.c
phil at newstar.rinet.ru
Thu Sep 8 12:23:44 CDT 2005
On Fri, 26 Aug 2005 23:03:33 +0200
Michael Jung <mjung at iss.tu-darmstadt.de> wrote:
> Every time you double click a folder, the current ShellView object is
> destroyed and a new one is created. Given that I have to browse into like 30
> different folders before it crashes on me, I can't pin down the relevant
In hunt for this bug, I discovered the following:
* It appears both with unixfs and normal Wine fs.
* Every double click on a folder in the listview destroys this listview
object (effectively destroying all underlying structures), creates a new
one, and returns control to the place where double click notification was
sent by the old listview (notify_hdr() function in listview.c). This time
the old listview and its structures are already destroyed, but we
continue to access them, exception!
Here is a patch which adds checking if the window has been destroyed at
that point. I don't know if it is acceptable but it fixes the problem.
Protect against wrong memory access if a listview is destroyed in a handler
for its NM_DBLCLK notification.
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