From:	Neil & Joey Obremski <obremski AT nwrain DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	malloc errors
Date:	Sun, 05 Apr 1998 14:01:21 +0000
Organization:	CyCLONE7 Design
Lines:	32
Message-ID:	<35278EB1.CDF435CC@nwrain.com>
Reply-To:	obremski AT nwrain DOT com
NNTP-Posting-Host:	22008 AT 205 DOT 134 DOT 220 DOT 163
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I've had problems in some of my programs using 'new' which of course
comes out using malloc anyway.  I found this out quickly when a lot of
my programs kept crashing and gdb kept saying malloc did it ;)

I don't know if there's a problem with malloc in djgpp or not, but it
certainly doesn't work 100% correctly when I use it.  Some of my
programs I spent hours debugging only to find that if I pass a
constant added to a variable to my allocation function (Alloc I called
it, wow pretty original =) malloc works fine, otherwise it doesn't.

For example.  I was messing around with a convenient "substring" style
function that I was making.  In one part I have:

  Alloc(newlen);

This crashes the program after going past it only once or twice. 
However if I...

  Alloc(100);

It works fine.  Similarly:

  Alloc(newlen + 100);

works fine as well. !??!?!?  I have DJGPP 2.01.  Has anyone else had
this problem?

-- 
 /----------------------[nobremski AT hotmail DOT com]----------------------\
( Neil C. Obremski                                     Ashrak DeadEye
)
 \-----------------[http://www.nwrain.com/~deadeye/]-----------------/

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