develooper Front page | perl.perl5.porters | Postings from December 2012

Re: [perl #115910] New copy-on-write breaks CPAN

Andreas Koenig
December 17, 2012 21:25
Re: [perl #115910] New copy-on-write breaks CPAN
Message ID:
Leon Timmermans <> writes:

> On Thu, Dec 6, 2012 at 11:37 PM, Leon Timmermans <> wrote:
>> Interesting. Both SV_CHECK_THINKFIRST(var) before initializing the
>> variable, so I thought they were safe. I don't know the details of the
>> new COW logic, I can imagine I also need to do it in the set magic.
> I think I've fixed it in the latest version of File::Map, but I
> haven't actually had time to verify it.

In my bisecting runs it survives up to v5.17.6-87-g07d01d6 and then
fails with v5.17.6-88-g1a904fc:

1a904fc88069e249a4bd0ef196a3f1a7f549e0fe is the first bad commit
commit 1a904fc88069e249a4bd0ef196a3f1a7f549e0fe
Author: Father Chrysostomos <>
Date:   Sun Nov 25 12:57:04 2012 -0800

    Disable PL_sawampersand

andreas Perl Programming lists via nntp and http.
Comments to Ask Bjørn Hansen at | Group listing | About