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Date: Thu, 5 Nov 2009 11:11:36 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: malloc overrides
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On Nov  5 04:04, Yaakov S wrote:
> On 05/11/2009 03:56, Corinna Vinschen wrote:
> >You can replace malloc with your own implementation, but it has to be a
> >*working* implementation.  Early in the per-process DLL initialization
> >there's a call to free(malloc(16)), which is used to figure out if
> >Cygwin's malloc has been overridden with an application-supplied version
> >of malloc.  Since your malloc calls exit, this goes down the gutter.  At
> >this early stage in initialization, Cygwin can't handle the exit call
> >correctly.
> >
> >Unless we can implement a way to figure out if the application provides
> >malloc without actually calling malloc, the above testcases are bound to
> >fail.
> 
> Thanks for the explanation.  So what are the correct answers to the
> questions the code is trying to answer?

Yes and no, in this order :)


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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