Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!helios!tamuts!n138ct
From: n138ct@tamuts.tamu.edu (Brent Burton)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Novice question about malloc() in Think C
Message-ID: <12591@helios.TAMU.EDU>
Date: 25 Feb 91 17:34:33 GMT
References: <1991Feb25.103404.3662@Neon.Stanford.EDU>
Sender: usenet@helios.TAMU.EDU
Distribution: usa
Organization: Texas A&M University
Lines: 28

Your code is perfect.

I have had this problem too.  I don't know what it is, but I looked at
the alloc.c file and tried to figure it out.  It's been a while, but I think
it returns null if it can't get the block and also if the block requested
is under a certain size.  Don't quote me on this nor flame me, people.

What I did was to surround every malloc() call with this:

#ifdef THINK_C
   x = (char *)NewPtr((long)sizeof(char));
#else
   x = (char *)malloc(sizeof(char));
#endif

I also added this:
#ifdef THINK_C
#define free(x)  DisposPtr((x))
#endif

This has relieved me of all problems.  I'm going to, someday, examine the
THINK C code and try to fix it myself.

BTW, I did add the 4.02 patches.
             +----------------------+--------------------------+
             | Brent P. Burton      | n138ct@tamuts.tamu.edu   |
             | Texas A&M University | Computer Science/Physics |
             +----------------------+--------------------------+