Re: after upgrade: glibc detected *** /usr/bin/perl: double free or corruption

On Oct 3, 2008, at 10:05 AM, Peter Daum wrote:
>> Anyway, I suspect the issue is todo with calling s/// on the  
>> element of a tied hash.
>> See if this reproduces the issue.
>> {
>>    package Foo;
>>    use Tie::Hash;
>>    use base qw(Tie::StdHash);
>>    sub new {
>>        my $proto = shift;
>>        my $inner = bless {};
>>        my %outer;
>>        tie %outer, __PACKAGE__, $inner;
>>        bless \%outer;
>>    }
>> }
>> $self = Foo->new;
>> ($self->{prog_name} = $0) =~ s|^.*/([^/]+)$|$1|;
>
> That's it: Same thing - the program is aborted with a stack trace!
> (Btw: this is happening with glibc-2.7 on Debian "lenny")
>
> So: what's the big difference between just assigning a value and  
> calling s/// ?
> Is there anything else that shouldn't be done on a tied hash?

No it should work. Now that you can reproduce it, and using only  
modules that come with Perl, I would suggest you report the issue  
using perlbug. perlbug will attach info about the perl build you are  
using.

Graham.