On Wed, 23 Feb 2011, Brian Raven wrote:
> On Wed, 23 Feb 2011, Christian Walde wrote:
> > Solution: Make sure $_ isn't pointing at %Config when Exporter.pm
> > happens. This can be done as simple as this:
> >
> > map { require ActiveState::Path } 1;
> >
> > (Though i'm sure more elegant solutions exist.)
[...]
> Regarding your work around. Map in a void context is usually frowned
> upon. Perhaps grep or possibly ...
>
> for ('now') { require ActiveState::Path }
>
> ... should have the same effect, i.e. aliasing $_ to something
> (hopefully) innocuous.
It turns out the canonical solution is to add
local *_;
at the top of the subroutine. Read all the gory details in perlsub.pod...
The important part to remember is:
local $_;
is not safe! It does not mean that $_ is now undef and that you can
do whatever you want with it. It may still have magic attached to
it, and (in this case) it may still be associated with a tied hash
or array element.
Cheers,
-Jan
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