Xref: news2.mv.net comp.os.msdos.djgpp:784
From: fenric AT clark DOT net (Andrew McCaffrey)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Issues with nearptr's.
Date: 30 Jan 1996 21:45:25 GMT
Organization: the beginning of all beginnings
Lines: 23
Message-ID: <4em3hl$mv7@clarknet.clark.net>
References: <822855248snz AT trenham DOT demon DOT co DOT uk> <310c0125 DOT sandmann AT clio DOT rice DOT edu> <4eccdl$90b AT clarknet DOT clark DOT net> <310d8c19 DOT sandmann AT clio DOT rice DOT edu>
NNTP-Posting-Host: explorer.clark.net
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Charles Sandmann (sandmann AT clio DOT rice DOT edu) wrote:
> > I've written a couple of graphic routines with nearptrs and they run fine 
> > under dos and cwsdpmi, but when I try to run them under gdb, I get a 
> > segmentation violation signal.  
> 
> I believe you, I've never tried it.  Does it work under EDEBUG32 or FSDB?
> If so, it may be some bug in GDB's memory management or something.  Are
> you sure you are using the non-move sbrk()?  This is exactly the problem
> I would expect using a debugger and the unix-sbrk with nearptrs (unless
> you reload the pointer).  A simple example is most useful debugging these
> problems.

Those are a couple of good questions.  I have not tried the program under 
EDEBUG or FSDB.  I don't know which version of sbrk I'm using, how do I 
find out?  - Guess it's time to go back and read the info files again :)

-- 
+------------------------Andrew McCaffrey+[fenric AT clark DOT net]------------+
|Doctor: But I don't exist in your world!|"Anybody remotely interesting |
|Brigade-Leader: Then you won't feel the |is mad in one way or another."|
|bullets when we shoot you.              |    - The Seventh Doctor      | 
|       Doctor Who - Inferno (1970)      |                              |
+----------------------------------------+------------------------------+