[Koha-bugs] [Bug 16104] Warnings "used only once: possible typo" should be removed

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=16104

--- Comment #19 from Jonathan Druart <jonathan.druart at bugs.koha-community.org> ---
(In reply to Marcel de Rooy from comment #18)
> If you compile (perl -cw) a script or module now that contains a use
> C4::Context, you have the following warnings:
> 
> Name "Tie::Hash::FIELDS" used only once: possible typo at
> /usr/share/perl/5.22/fields.pm line 135.
> Name "Cache::RemovalStrategy::LRU::FIELDS" used only once: possible typo at
> /usr/share/perl/5.22/fields.pm line 135.
> Name "Cache::RemovalStrategy::FIELDS" used only once: possible typo 
> at /usr/share/perl/5.22/fields.pm line 135.
> 
> [ PS koha-qa does the same. ]
> 
> Are these warnings somehow related to perl's Cache module containing things
> like below?
> 
> use base qw(Tie::Hash);
> 
> my $strategy = $args->{removal_strategy} || 'Cache::RemovalStrategy::LRU';

Yes, more or less, but I have never managed to track down completely the
problem.
There is something weird happening...
To recreate easily, see bug 11998 comment 62

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