Re: mod_perl and XML::LibXML

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On Thu, 17 Mar 2005, Stas Bekman wrote:

> James Orr wrote:
>> Hi,
>> 
>> I have an occaisional error happening with a module i'm using from a
>> mod_perl script.  This is in my "new" method ...
>> 
>> my $ifh = IO::File->new($project_dir.'/info.xml') || die "Can't open
>> info file: $!";
>> $data->{'info'} = $parser->parse_fh($ifh);
>> 
>> And the error it gives is ...
>> 
>> read on filehandle failed: Can't use an undefined value as a symbol
>> reference at /usr/lib/perl5/site_perl/5.8.4/i686-linux/XML/LibXML.pm
>> line 336.
>> 
>> By occaisional I mean that this error has occured 21 times in over
>> 21,000 hits.
>
> James, assuming that you don't use any eval {} blocks, try to install:
>
> use Carp;
> $SIG{__DIE__} = \&Carp::confess;
>
> (e.g. at the startup or your script)
>
> so the next time it fails you will see the exact calls trace. You can further 
> expand that sighandler to dump more information to figure out what triggers 
> the problem, helping you to define a reproduceable at will test program which 
> can them be easily solved.

Stas does have a good recommendation here, so please don't discount it.  I 
should point out the XML::LibXML module can read directly from a file.  Is 
there a specific reason why you don't use that method?  Search for the 
parse_file( $filename ) method.  I am interested in seeing if a specific 
problem exists in the XML::LibXML module though as it is a module I 
generally track and use quite often.  Currently it is using methods that 
are deprecated in the C library and it needs to be transitioned to a new 
logic.  As time permits of course ...

//========================================================\\
||  D. Hageman                    <dhageman@xxxxxxx.xxx>  ||
\\========================================================//