From @demerphq

IMO this should be viewed as a 5.18 blocker.

It is buggy to start, but in 5.18 with hash traversal order
randomization it will pretty well always fail.

Cheers,
Yves

---------- Forwarded message ----------
From​: Bugs in ExtUtils-MakeMaker via RT <bug-ExtUtils-MakeMaker@​rt.cpan.org>
Date​: 19 February 2013 12​:39
Subject​: [rt.cpan.org #83441] AutoReply​: Improper modification of hash
during each() traversal in t/basic.t
To​: demerphq@​gmail.com

Greetings,

This message has been automatically generated in response to the
creation of a trouble ticket regarding​:
  "Improper modification of hash during each() traversal in t/basic.t",
a summary of which appears below.

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  bug-ExtUtils-MakeMaker@​rt.cpan.org

t/basic.t contains a subroutine called _normalize() which uses faulty
logic to lowercase the keys in a hash that is being traversed with
each().

This has never been legal, but due to implementation issues probably
worked out such that the tests never failed.

Changes coming in Perl 5.18 mean that this will fail regularly.

Attached patch fixes the problem.

This is a Perl 5.18 blocker ticket, so I am marking it as important.

--
perl -Mre=debug -e "/just|another|perl|hacker/"

From @jkeenan

On Tue Feb 19 04​:03​:51 2013, demerphq wrote​:

IMO this should be viewed as a 5.18 blocker.

Schwern accepted the patch in this pull​:

Perl-Toolchain-Gang/ExtUtils-MakeMaker@6e09ca2

I believe that means what remains to be done is​:

(a) Updated version of ExtUtils​::MakeMaker released to CPAN;

(b) We pull that version into Perl 5 blead.

Correct?

The RT System itself - Status changed from 'new' to 'open'

From @demerphq

On 24 February 2013 00​:53, James E Keenan via RT
<perlbug-followup@​perl.org> wrote​:

On Tue Feb 19 04​:03​:51 2013, demerphq wrote​:

IMO this should be viewed as a 5.18 blocker.

Schwern accepted the patch in this pull​:

Perl-Toolchain-Gang/ExtUtils-MakeMaker@6e09ca2

I believe that means what remains to be done is​:

(a) Updated version of ExtUtils​::MakeMaker released to CPAN;

(b) We pull that version into Perl 5 blead.

Correct?

Yes, except that we are also waiting on a second PR to be applied
before they do that.

Yves

--
perl -Mre=debug -e "/just|another|perl|hacker/"

From @rjbs

Fixed in ExtUtils-MakeMaker-6.65_01, now in blead.

--
rjbs

From [Unknown Contact. See original ticket]

Fixed in ExtUtils-MakeMaker-6.65_01, now in blead.

--
rjbs

@rjbs - Status changed from 'open' to 'resolved'