From: fredex AT fcshome DOT stoneham DOT ma DOT us
Message-Id: <199607190133.VAA02703@fcshome.stoneham.ma.us>
Subject: Re: go-32 and Linux DOSEMU
To: sandmann AT clio DOT rice DOT edu
Date: Thu, 18 Jul 1996 21:33:38 -0400 (EDT)
Cc: djgpp AT delorie DOT com
In-Reply-To: <31eb2242.sandmann@clio.rice.edu> from "Charles Sandmann" at Jul 16, 96 00:01:54 am
Content-Type: text

Thinking furiously, Charles Sandmann wrote:
> 
> > big enough). I had gotten it to where it appeared to work, then I 
> > constructed a 6-mb file for testing, and found that sometimes seemingly
> > benign commands caused a segmentation violation. Couldn't figure it out.
> > But when I upgraded to the new CWSDPMI the entire problem went away.
> 
> Probably the insufficient internal heap bug in CWSDPMI.  The default size
> was increased in r2 so you can now allocate up to around 20Mb of data in
> small pieces before badness.  You can use CWSPARAM to bump it more if you
> need to edit 15Mb binary files :-)
> 

It must really be a bug--I would expect malloc to return me a NULL
pointer when it can't allocate any more memory, rather than a pointer
which when dereferenced causes an exception.

But I don't think I'll be doing too much editing of 15mb files. The
whole point was to verify that I COULD edit files bigger than RAM with
the ported BEAV. (I use beav moderately often at work on several Unix
platforms as well as DOS, and some of the files are significantly larger
than DOS' lower memory, hence the desire for the port. An added benefit
was that since I used the libc function ScreenPutString() to write all
the output onto the screen, the program SCREAMS!)

Fred

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