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Date: Wed, 27 Jun 2001 01:29:32 -0400
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: pthreads works, sorta
Message-ID: <20010627012932.I19058@redhat.com>
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References: <EA18B9FA0FE4194AA2B4CDB91F73C0EF08F09E AT itdomain002 DOT itdomain DOT net DOT au>
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In-Reply-To: <EA18B9FA0FE4194AA2B4CDB91F73C0EF08F09E@itdomain002.itdomain.net.au>; from robert.collins@itdomain.com.au on Wed, Jun 27, 2001 at 01:10:35PM +1000

On Wed, Jun 27, 2001 at 01:10:35PM +1000, Robert Collins wrote:
>> -----Original Message-----
>> From: Greg Smith [mailto:gsmith AT nc DOT rr DOT com]
> 
>> 
>> More experimenting with my home computer, dual pIII 850:
>> 
>> 1. 117  157 328
>> 2. 822 1527 ---
>> 3. 194  240 453
>> 4. 169  181 516
>> 
>As usual, I write a missive, then solve the puzzle.
>
>try this:
>
>
>int __stdcall
>check_valid_pointer (void *pointer)
>{
>  if (!pointer || IsBadWritePtr(pointer, sizeof (verifyable_object)))
>    return EFAULT;
>  return 0;
>}

This is not quite the same thing as VirtualQuery.  This verifies that the
process can write to memory.  It doesn't verify that it is accessible.

Maybe that is not important but I would have to think about this.

Nice find, though, Rob.

cgf

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