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Date: Thu, 13 Jul 2006 13:52:45 -0500
From: Brian Ford <Brian DOT Ford AT flightsafety DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: 1.5.21s mmap error
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On Thu, 13 Jul 2006, Brian Ford wrote:
> On Thu, 13 Jul 2006, Corinna Vinschen wrote:
> > I added an (hopefully) appropriate patch, which commits a page within a
> > MAP_NORESERVE area when memory in this page is accessed by the
> > application.  If commiting the memory fails, SIGBUS is generated. Please
> > test CVS HEAD or the next developer snapshot from
> > http://cygwin.com/snapshots/
>
> Wow!  Thanks.  Given my limited Windows API knowledge, that sounded
> difficult to accomplish properly.  I'll test it for you shortly.

One problem found.  If the memory is not touched before using it as a
buffer to a read call, the read returns -1 with errno set to ISDIR.  STC
attached.

Thanks again for looking at this.

-- 
Brian Ford
Lead Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
the best safety device in any aircraft is a well-trained crew...
.


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