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bug#7190: Crash in menus on w32

From: Lennart Borgman
Subject: bug#7190: Crash in menus on w32
Date: Wed, 13 Oct 2010 13:08:26 +0200

On Wed, Oct 13, 2010 at 1:02 PM, grischka <address@hidden> wrote:
>> I assume that their is either a logical problem with the code inside
>> Emacs or a bad assumption on how menu callbacks are actually run.
> Is there a difference between logical problem and bad assumption?

Yes. The code could be correct under some bad assumptions regarding
the way the interface to the OS works.

Is not that an important difference?

>> By
>> adding DebPrint call we could perhaps see if some code where called in
>> an order we did not expect.
> Perhaps see the information that you already have?  For example
>  #7  0x011c4e4b in w32_free_submenu_strings (menu=0x205e3) at w32menu.c:1701
> is telling where is "some code", and
>  "Invalid Address specified to RtlFreeHeap( 00850000, 0088BDC8 )"
> is telling about "order we did not expect", as likely in:  Called
> twice for the same memory object.  If in doubt, try to prove that
> it can't happen.

Yes, perhaps. But it could also be that memory objects are freed in an
order we did not expect.

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