Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.com Date: Wed, 21 Feb 2001 21:23:29 -0500 From: Christopher Faylor To: "''cygwin@cygwin.com' '" Cc: kcamera@bwrc.eecs.berkeley.edu Subject: Re: GCC untrackable crashes Message-ID: <20010221212329.E7576@redhat.com> Reply-To: cygwin@cygwin.com Mail-Followup-To: "''cygwin@cygwin.com' '" , kcamera@bwrc.eecs.berkeley.edu References: <711F6B80B5B4D211BA900090272AB7649C4210@noyce.eecs.berkeley.edu> <20010221205955.A7576@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.11i In-Reply-To: <20010221205955.A7576@redhat.com>; from cgf@redhat.com on Wed, Feb 21, 2001 at 08:59:55PM -0500 On Wed, Feb 21, 2001 at 08:59:55PM -0500, Christopher Faylor wrote: >On Wed, Feb 21, 2001 at 05:23:53PM -0800, Kevin Camera wrote: >>Mumit and others, >> >>Well, it was true that my character arrays were short by one character >>in the first case, and in the second case calling ofstream.clear() >>before reusing the stream got rid of all the seg faults. The program >>is fine now. >> >>With hindsight, I was completely confused and thrown off by the strange >>behavior I saw in GDB (meaning the lack of a stack trace or any other >>information about the seg fault). Luckily (for a hardware guy who >>known little about real programming) I managed to hand-step through the >>code and find the problematic lines... Would any of the GCC developers >>like my complete source example to add some functionality to the >>compiler or debugger to better catch/aviod these errors? > >It didn't occur to me before, but you were probably in the wrong thread >when you attempted to get a stack trace since the cygwin DLL is >multithreaded by default. Typing "thread 1" would probably have >provided more instructive output. ...actually, I meant that typing "thread 1" prior to trying to get a backtrace would have provided more instructive output. cgf -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple