Bugs item #1420636, was opened at 2006-01-31 16:51
Message generated for change (Comment added) made by fregro
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Category: extensions
Group: v2.0
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Paul Gunn (paulgunn)
Assigned to: Fredrik Grohn (fregro)
Summary: Null pointer reference in com+ custom action
Initial Comment:
The symptom is:
ConfigureComPlusUninstall: Debug Assert Message:
Assertion failed in
c:\documents and settings\robmen\local
settings\temp\wp001\src\ca\wcautil\wcautil.cpp, 64
CustomAction ConfigureComPlusUninstall called
WcaInitialize() but not
WcaTerminate()
at which point installation rolls back.
I debugged the problem and found a defect in
cpiasmsched.app in the SortAssemblyListByModule
function.
At line 1230 you have the following:
// if the item is not already first in the list
if (!pAsm->pPrev)
{
// remove item from it's current position
pAsm->pPrev->pNext = pAsm->pNext; //EXCEPTION!!
...
As you can see pAsm->pPrev is dereferenced (pAsm-
>pPrev->pNext) after it was established to be a null
pointer (!pAsm->pPrev).
Based on the comment and subsequent code, it looks
like the 'if' check is reversed from what it should
be. I think it should be:
// if the item is not already first in the list
if ( NULL != pAsm->pPrev) //CHECK IF NOT NULL
{
// remove item from it's current position
pAsm->pPrev->pNext = pAsm->pNext;
...
After this change, everything worked fine. I think
this code is only exercised when used from a merge
module. That would explain why not many people have
encountered it.
----------------------------------------------------------------------
>Comment By: Fredrik Grohn (fregro)
Date: 2006-08-26 02:06
Message:
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Should be fixed in 2.0.4423.0.
----------------------------------------------------------------------
Comment By: Antony Walmsley (antonywa)
Date: 2006-02-02 16:17
Message:
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user_id=1345213
I noticed this also :
http://sourceforge.net/mailarchive/forum.php?thread_id=9502039&forum_id=39978
Strangely, it only happened when using the merge module in
an Installshield project. A WiX installer worked fine.
----------------------------------------------------------------------
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