From:	Bruce Merry <bmerry AT cssa DOT org DOT za>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Large `new' request crashes: help!
Date:	Sat, 22 Feb 1997 13:19:15 +0200
Organization:	UUNET Internet Africa
Lines:	18
Message-ID:	<330ED369.4742@cssa.org.za>
NNTP-Posting-Host:	196-7-124-74.iafrica.com
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I've got an annoying problem. If I remember correctly (I've actually
done not much C/C++, I'm a Pascal man) 'new' should return a NULL
pointer if there is insufficient memory. I'm using DJGPP mostly for DPMI
so that I can get loads of memory, but if I ask for too much my program
just dies and says: Virtual memory exceeded in `new'. I want to be able
to catch this properly. I'm prepared to overload the new operator if I
have to, but I don't really want to.

Also, how could I find out the largest allocatable block of memory?
(This may be the solution to the previous problem). I've looked at
DPMI.H and I've tried some stuff, but they don't seem to do what I want. 

One unrelated thing: How do you use assembly code in C++? I've written
some Pascal stuff with embedded asm and I'd like to port it to speed
things up. 

Thanks in advance
Bruce Merry

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