202476 - debugging mozilla in VC.net can cause "user shell folders" reg key to be hosed

Status: RESOLVED INCOMPLETE

(Testing :: General, defect, P5)

Description

[James Nord]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.0.3705)
Build Identifier: 1,4a CVS (Wed  Mar 26 12:36:47 2003)

Under some specific circumstances (yet to be established) when debugging a cvs 
build of mozilla with MS VC.Net certain keys under 
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User 
Shell Folders and their related keys under 
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell 
Folders become corrupted and set to be paths under the Windows folder.

This does not happen when running mozilla normally or debugging other 
programms in VC.

Reproducible: Sometimes

Steps to Reproduce:
1. Build a debug version of mozilla with a breakpoint entered into the code 
somewhere (__debugbreak())
2. start mozilla and run till it hits the break point
3. Launch the VC debugger when prompted
4. stop the debugging in VC (and terminate process)
5. restart the debugging by launching app in VC
6. goto 4
Actual Results:  
Sometimes when executing step 5 I no longer get the profile manger dialog.  
Whenever this happens certain keys under the previously mentioned roots have 
been changed (Desktop, AppData, Favourites)

Expected Results:  
the registry values should be left unchanged.

Not sure what is causing this.  I'll try and run with regmon ( 
http://www.sysinternals.com/ntw2k/source/regmon.shtml ) and see who the 
culprit is (mozilla, VC, OS)

Comment 1

[James Nord]

Attachment: log of reg activity when starting mozilla

WTF is moz even attempting by *writing* under
HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\
and writing to HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell
Folders\Favorites

During the capture of this log the keys didn't become hosed but it is now easy
to see why they might.	I'm very scared about whats going on with the mount
points.

Comment 2

[Simon Paquet [:sipaq]]

not blocking development
severity -> critical