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 UAA19280; Fri, 26 Mar 2004 20:27:17 +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 UAA19169 for ; Fri, 26 Mar 2004 20:27:16 +0100 (MET) Received: from calmail-cl.berkeley.edu (mailfarm.Berkeley.EDU [128.32.61.106]) by nez-perce.inria.fr (8.12.10/8.12.10) with ESMTP id i2QJRrKW002975 for ; Fri, 26 Mar 2004 20:27:54 +0100 Received: from [64.162.212.212] (HELO tallman.kefka.frap.net) by calmail-cl.berkeley.edu (CommuniGate Pro SMTP 4.1.8) with SMTP id 9934304; Fri, 26 Mar 2004 11:27:14 -0800 Received: by tallman.kefka.frap.net (sSMTP sendmail emulation); Fri, 26 Mar 2004 11:27:07 -0800 Date: Fri, 26 Mar 2004 11:27:07 -0800 From: Kenneth Knowles To: Blair Zajac Cc: caml-list@inria.fr Subject: Re: [Caml-list] segfault in Unix.gethostbyname Message-ID: <20040326192707.GB18128@tallman.kefka.frap.net> References: <20040326182202.GA28843@tallman.kefka.frap.net> <40647DB3.39AD0635@orcaware.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <40647DB3.39AD0635@orcaware.com> User-Agent: Mutt/1.5.6i X-Miltered: at nez-perce by Joe's j-chkmail ("http://j-chkmail.ensmp.fr")! X-Loop: caml-list@inria.fr X-Spam: no; 0.00; knowles:99 caml-list:01 segfault:01 2004:99 blair:01 zajac:01 knowles:99 segfault:01 ocaml-c:01 clue:01 gdb:01 ocamlrun:01 gdb:01 usr:01 usr:01 Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk X-Status: X-Keywords: X-UID: 381 Aha, I remember that discussion. Before my reinstall I had the CVS of ocaml, and this time I'm using a release. I didn't realize that fix wasn't in the new releases (have been using CVS version for a long time). Thanks a bunch. Kenn On Fri, Mar 26, 2004 at 11:00:03AM -0800, Blair Zajac wrote: > Kenneth Knowles wrote: > > > > Hi all, > > > > I get a segfault from Unix.gethostbyname whenever I have wins enabled in my > > nsswitch.conf, but with wins removed everything is fine. I'm hoping someone > > with more unix/ocaml-C experience will have a clue. This was actually working a > > week ago, but I had to "flatten and reinstall" my system. > > > > $ grep wins /etc/nsswitch.conf > > hosts: files wins dns > > > > $ gdb ocamlrun > > (gdb) run /usr/local/bin/ocaml unix.cma > > Starting program: /usr/local/bin/ocamlrun /usr/local/bin/ocaml unix.cma > > Objective Caml version 3.07+2 > > > > # Unix.gethostbyname "dbdev";; > > > > Program received signal SIGSEGV, Segmentation fault. > > 0x080536c3 in string_set () > > (gdb) bt > > #0 0x080536c3 in string_set () > > #1 0x4034b971 in _nss_wins_gethostbyname2_r () from /lib/libnss_wins.so.2 > > #2 0x403cb42c in bLoaded () from /lib/libnss_wins.so.2 > > #3 0x4039bb5b in ?? () from /lib/libnss_wins.so.2 > > #4 0x00000294 in ?? () > > > > Now I can see it is some kind of string error, and it occurs in the WINS > > library, but I'm sure it traces back somehow to the ocaml String_val(..) > > I believe you're running into a problem where the Samba code is binding > to the string_set symbol in Ocaml and not in the Samba library. You'll > find a string_set in Ocaml's byterun/str.c. > > Probably the easiest solution is to get CVS HEAD of ocaml which has renamed > many function names to have "caml_" prepended, thus avoiding this issue. > > Best, > Blair > > -- > Blair Zajac > Plots of your system's performance - http://www.orcaware.com/orca/ ------------------- 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