Date: Thu, 17 Jul 2003 06:29:29 +0200
From: "Eli Zaretskii" <eliz AT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: djgpp AT delorie DOT com
Message-Id: <3405-Thu17Jul2003062928+0300-eliz@elta.co.il>
X-Mailer: emacs 21.3.50 (via feedmail 8 I) and Blat ver 1.8.9
In-reply-to: <3F159AC9.4010402@student.kuleuven.ac.be> (message from Peter
	Claessens on Wed, 16 Jul 2003 20:34:49 +0200)
Subject: Re: malloc/free blues
References: <3F156434 DOT 3000508 AT psy DOT kuleuven DOT ac DOT be> <uu19m75gm DOT fsf AT elta DOT co DOT il> <3F159AC9 DOT 4010402 AT student DOT kuleuven DOT ac DOT be>
Reply-To: djgpp AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: djgpp AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

> Date: Wed, 16 Jul 2003 20:34:49 +0200
> From: Peter Claessens <peter DOT claessens AT student DOT kuleuven DOT ac DOT be>
> 
> Page fault at eip=000c0df0, error=0006
> eax=001c2028 ebx=003f501c ecx=003f501c edx=00161298 esi=0043702c edi=00000013
> ebp=003a1038 esp=003a102c program=C:\SRC\DOTS2002\DOTREAD.EXE
> cs: sel=00af  base=839b6000  limit=ffffafff
> ds: sel=00b7  base=839b6000  limit=ffffafff
> es: sel=00b7  base=839b6000  limit=ffffafff
> fs: sel=00c7  base=00000000  limit=0010ffff
> gs: sel=00c7  base=00000000  limit=0010ffff
> ss: sel=00b7  base=839b6000  limit=ffffafff
> App stack: [003a2000..002a2000]  Exceptn stack: [00167318..001653d8]
> 
> Call frame traceback EIPs:
>     0x000c0df0 free+168, file malloc.c

Looks indeed as a heap corruption.

What does GDB print if you invoke it on your program, like this:

     gdb dotread.exe

and then type this at GDB's prompt:

    x/i 0x000c0df0

?