From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id KAA03496; Sat, 8 Nov 2003 10:59:01 +0100 (MET) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f Received: from nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id KAA02976 for ; Sat, 8 Nov 2003 10:58:59 +0100 (MET) Received: from aomori.annexia.org (annexia.force9.co.uk [212.56.101.183]) by nez-perce.inria.fr (8.11.1/8.11.1) with ESMTP id hA89wv125616 for ; Sat, 8 Nov 2003 10:58:57 +0100 (MET) Received: from rich by aomori.annexia.org with local (Exim 3.36 #1 (Debian)) id 1AIPrl-0001fR-00; Sat, 08 Nov 2003 09:58:49 +0000 Date: Sat, 8 Nov 2003 09:58:49 +0000 To: Anastasia Gornostaeva Cc: caml-list@inria.fr Subject: Re: [Caml-list] segfaults Message-ID: <20031108095849.GA6389@redhat.com> References: <20031108091111.GA10631@ermine.home> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031108091111.GA10631@ermine.home> User-Agent: Mutt/1.5.4i From: Richard Jones X-Loop: caml-list@inria.fr X-Spam: no; 0.00; caml-list:01 segfaults:01 crashes:01 3.06:01 3.07:01 ocaml-mysql:01 pcre-ocaml:01 ocamlnet:01 cores:99 segfaults:01 'return':99 crashes:01 gc-related:01 freshmeat:01 ltd:98 Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk On Sat, Nov 08, 2003 at 12:11:11PM +0300, Anastasia Gornostaeva wrote: > Hello. > > My program often crashes. Why? I use Ocaml 3.06 and 3.07CVS under FreeBSD 4.9. > In my program I use many packets such as ocaml-expat, cryptokid, ocaml-mysql, > pcre-ocaml, ocurl, ocamlnet and so on. > My programs works several hours and goes to core. All cores are different. > It seems main problem is with GC. > How to be? Well, quite easily. I was getting segfaults in one program I wrote because in the C part I'd accidentally used 'return' instead of the 'CAMLreturn' macro. The way to diagnose these sorts of problems is to add regular calls to `Gc.full_major ()' into your program. If the program crashes while making these calls, then you can be fairly sure it's a GC-related memory allocation problem. Look at the stack trace - it should give you some clues. Rich. -- Richard Jones. http://www.annexia.org/ http://freshmeat.net/users/rwmj Merjis Ltd. http://www.merjis.com/ - improving website return on investment MONOLITH is an advanced framework for writing web applications in C, easier than using Perl & Java, much faster and smaller, reusable widget-based arch, database-backed, discussion, chat, calendaring: http://www.annexia.org/freeware/monolith/ ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners