Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm
Sender: cygwin-owner AT sourceware DOT cygnus DOT com
Delivered-To: mailing list cygwin AT sourceware DOT cygnus DOT com
Sender: cwilson AT ece DOT gatech DOT edu
Message-ID: <3749A6A1.3D078A97@ece.gatech.edu>
Date: Mon, 24 May 1999 15:21:05 -0400
From: Charles Wilson <cwilson AT ece DOT gatech DOT edu>
X-Mailer: Mozilla 4.6 [en] (X11; U; HP-UX B.10.20 9000/777)
X-Accept-Language: en
MIME-Version: 1.0
To: earnie_boyd AT yahoo DOT com
CC: cygwin AT sourceware DOT cygnus DOT com
Subject: Re: gdb + cygwin
References: <19990524175534 DOT 4577 DOT rocketmail AT web116 DOT yahoomail DOT com>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Earnie Boyd wrote:

> --- Charles Wilson <cwilson AT ece DOT gatech DOT edu> wrote:
> >
> > Okay, I tried this:
> >     gcc -Wall -c smain.c ===> no errors
> >     gcc -Wall -c gaaout.c ===> a few errors having to do with a return (no
> > args)
> > in a function that isn't supposed to return void. After I fixed 'em,
> >
> >     gcc -Wall -c gaaout.c ===> no errors
> >     gcc -o smain smain.o gaaout.o ===> no errors
> >
> > execute `smain' ==> core dump. sigh.
>
> How about referencing memory location zero due to a NULL pointer reference?
> This will always SIGSEGV.
>
> BTW, Mumit always suggests using Purify or ElectricFence to check the memory
> allocation.  I've often suggested using the -lmmalloc library.

Well, linking with electricfence on HP-UX showed no problems. Will electricfence
run in cygwin? (I would just try it and see, but perens.com seems to be down right
now, so I can't get the source code). Also, does efence check for NULL pointer
references in addition to memory allocation errors?

--Chuck



--
Want to unsubscribe from this list?
Send a message to cygwin-unsubscribe AT sourceware DOT cygnus DOT com