Thanks for the help.  After I started fresh and rebuilt mozilla with
--disable-debug and a few other options turned on, all my problems were
basically solved, plus my embedded app loads several seconds faster. 
Not rebuilding the entire app (mainly because I didn't want to wait an
hour for each build) was indeed the problem.  Thanks again!


Scott Collins wrote:
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> This problem is covered specifically in the nsCOMPtr user's guide.
> 
> See
> 
>   <http://www.mozilla.org/projects/xpcom/nsCOMPtr.html
>    #NSCAP_FEATURE_DEBUG_PTR_TYPES>
> 
> Essentially, the entire app must be compiled with the same setting of
> the build flag |NSCAP_FEATURE_DEBUG_PTR_TYPES|.  By _default_ this is
> controlled by the debug flags.  So, unless you take specific action,
> the bad behavior you have experienced is the typical result of mixing
> debug and non-debug pieces together in your build.  In particular, a
> debug build of the XPCOM library mixed with non-debug builds of any
> other components will cause link problems.  You can have a
> link-compatible debug build of XPCOM by defining
> |NSCAP_DISABLE_DEBUG_PTR_TYPES|.
> 
> There have been bug reports against this in the past, and there are
> lengthy explanations in some of them.  I would cite one but bugzilla
> is currently backing up so I'll have to search later.
> 
> Yes, the thing you are doing now is a hack.  You've made a function
> with the right name available, but it's unrelated to the actual
> inheritance of |nsCOMPtr| in the place where you are wanting it.  As
> it turns out ... everything is the right shape, and your app works,
> but that's really just a coincidence ;-)  The real answer is to fix
> your flags so |NSCAP_FEATURE_DEBUG_PTR_TYPES| is consistent.
> 
> Hope this helps,
> ______________________________________________________________________
> Scott Collins                               <http://ScottCollins.net/>
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