Home > Perl Error > Perl Error Attempt To Free Unreferenced Scalar

Perl Error Attempt To Free Unreferenced Scalar

Why is AT&T's stock price declining, during the days that they announced the acquisition of Time Warner inc.? Code blocks~~~ Code surrounded in tildes is easier to read ~~~ Links/URLs[Red Hat Customer Portal](https://access.redhat.com) Learn more Close Red Hat Bugzilla – Bug537777 'Attempt to free unreferenced scalar' when running a But when we put "forthread" in a separate file other than the caller file, it reports the above warning message, in fact, no matter if we pass any argument at time How do I use this? | Other CB clients Other Users? Source

by licht (Novice) on Mar 31, 2007 at 23:30UTC I don't know if I understand right, but the code seems to me the thread is based on code that resides in Quick Links Downloads Subscriptions Support Cases Customer Service Product Documentation Help Contact Us Log-in Assistance Accessibility Browser Support Policy Site Info Awards and Recognition Colophon Customer Portal FAQ About Red Hat Break that loop to ensure that PL_defstash gets freed at that point. Oboukhov" : Bug#650675. (Sat, 14 Jan 2012 18:54:08 GMT) Full text and rfc822 format available. http://blog.booking.com/the-dreaded-attempt-to-free-unreferenced-scalar.html

Any comments? The > test suite passes, but >  % grep unreferenced t/logs/error_log|wc -l >  30 Can you post some of that error log which shows the error? > This seems related to If you have further comments please address them to [email protected], and the maintainer will reopen the bug report if appropriate. But more importantly, perl's internal memory management makes this all the more likely to happen.

Attempt to free unreferenced scalar: SV 0x7b80510, Perl interpreter: 0x7b25f60 during global destruction. . . Where's the 0xBEEF? use overload '""' => \&stringify; sub create { my ($class, $listref)= @_; bless $listref, $class; return $listref; } sub stringify { my $self= shift; return "$LN( " . Red Flag This Post Please let us know here why this post is inappropriate.

I did a variation on your A.pl. Hmmmm. Find the super palindromes! But we'll see how it goes this time. > Suggest inlining your patches next > time instead of using attachments, sometimes the list code may filter > on those.

Create A New User Node Status? This fixes all the remaining 24 > > warnings in t/logs/error_log after running the whole test suite. > > Incidentally it doesn't look like either of those messages made it > Message #50 received at [email protected] (full text, mbox, reply): From: Niko Tyni To: [email protected] Cc: [email protected], [email protected] Subject: Re: mod_perl 2.0.5 -> Attempt to free unreferenced scalar on startup Date: Attempt to free unreferenced scalar: SV 0x7b7d270, Perl interpreter: 0x7b4cfb0 during global destruction.

I have perlv5.8.8, threaded and shared: #!/usr/bin/perl use strict; use warnings; use threads; use threads::shared; my $dummy : shared = 1; threads->new(sub { "B::c", $dummy++ })->join; print "$dummy\n"; [download] [reply][d/l] Re^2: Have a look at FAQ219-2884 RE: what is "Attempt to free unreferenced scalar"? Dominic Hargreaves (supplier of updated libapache2-mod-perl2 package) (This message was generated automatically at their request; if you believe that there is a problem with it please contact the archive administrators Oboukhov" , [email protected] Subject: Re: Bug#650675: perl errors: Attempt to free unreferenced scalar...

my ($arg)=@_; return 0; } #forthread ## You have no module termination value, 1; [download] All of which leads me to believe that you aren't actually running this module when you this contact form I know that I am in for an extended debugging session. or are there real problems happening that I should be concerned about? Browse other questions tagged node.js perl segmentation-fault or ask your own question.

Update: seems I was wrong. Acknowledgement sent to Niko Tyni : Extra info received and forwarded to list. The next steps of getting to the bottom of that involve the -DDEBUG_LEAKING_SCALARS, -DDEBUG_LEAKING_SCALARS_FORK_DUMP, and -DDEBUG_LEAKING_SCALARS_ABORT Configure options. have a peek here Rinse-repeat until you manage to corrupt memory and warn about it before Perl gets a chance to reuse the memory.

If you say so, but it doesn't show up in any web accessible archives or news.gmane.org so I suspect that was just your personal copy. Maybe a standard or CPAN module does. Actually, its not as serious as it sounds, as it would get freed a bit later anyway by sv_clean_all(), but this new way has these benefits: * it gets freed where

Thanks for the contribution.

When I run: #! /usr/bin/perl return 1; [download] perl tells me Can't return outside a subroutine at return.pl line 2 [download] So I guess the previous discussion was somewhat inaccurate. Attempt to free unreferenced scalar: SV 0x2af45f41e888, Perl interpreter: 0x2af45ddf7d00 during global destruction. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Thanks for your work, -- Niko Tyni [email protected] [0001-Fix-a-reference-counting-bug-uncovered-by-Perl-5.13..patch (text/x-diff, attachment)] [0002-Fix-another-reference-counting-bug-uncovered-by-Perl.patch (text/x-diff, attachment)] Information forwarded to [email protected], Debian Perl Group : Bug#650675; Package libapache2-mod-perl2. (Sat, 11 Feb 2012 17:51:03 GMT)

Alas, those are left in blissful unawareness of the pending doom by invalid memory access. Message #68 received at [email protected] (full text, mbox, reply): From: Niko Tyni To: Fred Moyer Cc: [email protected], [email protected] Subject: Re: [RELEASE CANDIDATE]: mod_perl-2.0.6 RC1 Date: Sat, 11 Feb 2012 This fixes all the remaining 24 > warnings in t/logs/error_log after running the whole test suite. Check This Out don't have a win box to hand I'm afraid...[reply] Re: Re: Attempt to free unreferenced scalar by John M.

MikeLacey (MIS) 21 Mar 07 16:33 Hi lichtjiang,How are you getting on with this?If you're still having problems can I suggest that you write as simple and short a script as Copy sent to Debian Perl Group . (Sun, 04 Dec 2011 19:51:10 GMT) Full text and rfc822 format available. DEBPKG:debian/mod_paths - Tweak @INC ordering for Debian DEBPKG:debian/module_build_man_extensions - http://bugs.debian.org/479460 Adjust Module::Build manual page extensions for the Debian Perl policy DEBPKG:debian/prune_libs - http://bugs.debian.org/128355 Prune the list of libraries wanted to what But for debugging the above memory problems, it exacerbates the action at a distance by frequent reuse of SV slabs.

my $dummy=1; threads->create("B::c", ($dummy)); ... _B.pm_ ...