From: "Matthew Conte" <spam AT somebody DOT else>
Newsgroups: comp.os.msdos.djgpp
References: <199810041742 DOT NAA01799 AT indy DOT delorie DOT com>
Subject: Re: SIGSEGV under DOS, but not Win9x?
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Date: Sun, 4 Oct 1998 16:34:00 -0400
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To: djgpp AT delorie DOT com
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DJ Delorie wrote in message <199810041742 DOT NAA01799 AT indy DOT delorie DOT com>...

>You are declaring a pointer (bitmap) and passing it to a function
>(which dereferences it) but you never initialize the pointer to point
>to anything.  If the undefined initial value happens to be zero, your
>program will crash.

Thanks, DJ - I don't know *how* I missed that in my code...

>cwsdpmi is a lot stricter than Windows; if you have a problem in
>cwsdpmi and not windows, it's probably a bug in your code.

That's what I've learned from past experience, so I knew I was mucking
something up...

Thanks again,
Matt.