eff_i_g has asked for the wisdom of the Perl Monks concerning the following question:

Monks,

I've a script using almost two dozen modules and as soon as I added Archive::Zip the wondrous "Segmentation Fault (core dumped)" surfaced.

I boiled it down to this simple script (see the comment)... 
use warnings;
use strict;
use Archive::Zip;
use Aspect;

sub def { print 'def'; }

### Uncommenting the following = core dump.
#before { print 'abc'; } call 'main::def';

def();

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...which gives the following via the debugger: 
Signal SEGV at /usr/local/lib/perl5/site_perl/5.10.0/Aspect/Advice/Bef
+ore.pm line 53
        Aspect::Advice::Before::_install('Aspect::Advice::Before=HASH(
+0x793b38)') called at /usr/local/lib/perl5/site_perl/5.10.0/Aspect/Ad
+vice.pm line 13
        Aspect::Advice::new('Aspect::Advice::Before', 'code', 'CODE(0x
+1592a8)', 'pointcut', 'Aspect::Pointcut::Call=ARRAY(0x75f980)', 'lexi
+cal', '') called at /usr/local/lib/perl5/site_perl/5.10.0/Aspect.pm l
+ine 64
        Aspect::before('CODE(0x1592a8)', 'Aspect::Pointcut::Call=ARRAY
+(0x75f980)') called at test.pl line 10
Abort (core dumped)

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I'm afraid this is beyond my comprehension. Any insights as to why these two aren't playing well together?

Thanks!

Update: More from the debugger. It doesn't like the empty string(s)? 
Watchpoint 0:   $key changed:
    old value:  'COMPRESSION_STORED'
    new value:  'END_OF_CENTRAL_DIRECTORY_SIGNATURE_STRING'
Watchpoint 2:   $value changed:
    old value:  'SCALAR(0x32a2e0)'
    new value:  'GLOB(0x4ec640)'
Aspect::Pointcut::match_all(/usr/local/lib/perl5/site_perl/5.10.0/Aspe
+ct/Pointcut.pm:189):
189:                            next if $key =~ /[^\w:]/;
  DB<24> 
Aspect::Pointcut::match_all(/usr/local/lib/perl5/site_perl/5.10.0/Aspe
+ct/Pointcut.pm:190):
190:                            next unless defined $value;
  DB<24> 
Aspect::Pointcut::match_all(/usr/local/lib/perl5/site_perl/5.10.0/Aspe
+ct/Pointcut.pm:191):
191:                            $_ = "$package\::$key";
  DB<24> 
Aspect::Pointcut::match_all(/usr/local/lib/perl5/site_perl/5.10.0/Aspe
+ct/Pointcut.pm:192):
192:                            local(*ENTRY) = $value;
  DB<24> 
Watchpoint 0:   $key changed:
    old value:  'END_OF_CENTRAL_DIRECTORY_SIGNATURE_STRING'
    new value:  ''
Watchpoint 1:   $package changed:
    old value:  'Archive::Zip'
    new value:  ''
Watchpoint 2:   $value changed:
    old value:  'GLOB(0x4ec640)'
    new value:  ''
Aspect::Pointcut::match_all(/usr/local/lib/perl5/5.10.0/Carp.pm:28):
28:     sub longmess  { goto &longmess_jmp }

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Replies are listed 'Best First'.
Re: Archive::Zip + Aspect's "before" = core dump
by Khen1950fx (Canon) on Aug 11, 2010 at 22:48 UTC
    Try this: 
    #!/usr/bin/perl

use strict;
use warnings;
use Archive::Zip;
use Aspect;

my $pointcut = Aspect::Pointcut::Call->new(def());

before {
    print STDERR "Called my function " . $_->sub_name . "\n";
} call qr/^ main::def()\w+ $/;

sub def { print "abc\n"; }

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[reply]
[d/l]
      Khen,

      This is the output I get: 

      abc
Segmentation Fault (core dumped)

      [download]
[reply]
[d/l]

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