Hi - just posting aout my own post :-) I am running Fedora Core 2 & Koha 2.2.3 I have the problem as described below (from the net-z3950 mailing list) http://indexdata.dk/pipermail/net-z3950/2005-July/000564.html Has anyone resolved this? I've spent too long on it already. UPDATE - I believe this only happens on time outs. I am beginning to suspect our *&^%( Windows ISA server is the real problem. I am pretty sure it was screwing up the mail server.
I have a cgi program that does a Z3950 fetch, when the z3950 server can not be connected $this->{conn} = new> Net::Z3950::Connection($mgr,host,port,databaseName=>$base,user=>$user,passwo> rd=>$pass); Dies with this error:> Attempt to free unreferenced scalar: SV 0x13f5128 at\
/exlibris/sfx_ver/sfx_version_3/app/perl-5.8.6/lib/site_perl/5.8.6/sun4-sola
ris/Event.pm line 102.> [Wed Jul 06 02:53:05 2005] [notice] child pid 12954 exit signal Bus error (10) Ouch!
And causes the cgi program to crash, it seams to me that apache does not> know how to handle the signal that is returned.> I tried catching the error with an eval , but that does not work. No, that wouldn't work. "Attempt to free unreferenced scalar" is not an error in the Perl program (which the Perl program would be able to handle), but in the Perl interpreter. That is deep voodoo magic. Unless you've run into a bug in Perl itself (unlikely given the maturity of the code) or in Apache (ditto) or in mod_perl (ditto again), that means the only possible sources of the error are the C-to-Perl binding code-segments in Net::Z3950 itself or the Event module. Not to be arrogant or anything, but I am pretty darned certain it's the latter.
A command line program that attempts to connect to the same server in the same way does not die on :> $this->{conn} = new> Net::Z3950::Connection($mgr,host,port,databaseName=>$base,user=>$user,passwo> rd=>$pass); but rather sends the following error to the standard error: Event: '?? Connection.pm:153' died and then $Event::DIED died with: Can't call method "attributes" without a package or object reference at
/exlibris/sfx_ver/sfx_version_3/app/perl-5.8.6/lib/site_perl/5.8.6/sun4-sola
ris/Event.pm line 104.
OK, that's more evidence that Event.pm (or, rather the C portion of it) is to blame. This is not the first time we've had problems with the Event module -- other have run into seemingly unreproducible errors that it generates, and its unportability is the reason Net::Z3950 doesn't run under MS-Windows. It looks to me like the solution is semi-radical surgery: rip the Event module right out of the Net::Z3950 module and replace it with YAZ's own event loop. That would have many benefits, but the best one would be that we'd not have the external dependency, so that we'd be in a position to fix problems such as yours. Otherwise, I'm afraid I don't think there's much we can do. -- Don Robertson Systems Administrator Hun Sen Library Royal University of Phnom Penh Kingdom of Cambodia don@robertson.net.nz 012 769 280 _______________________________________________ Koha mailing list Koha@lists.katipo.co.nz http://lists.katipo.co.nz/mailman/listinfo/koha