I've seen this happen and it was caused by using a copy of Scalar::Util which was compiled using an older version of Perl. Scalar::Util decides at install-time whether Perl has weaken() or not.

You can find out which copy of Scalar::Util you're using by looking at %INC:

   perl -MScalar::Util -MData::Dumper -e 'print Dumper(\%INC)'

-sam

In reply to Re: Weak references are not implemented by samtregar
in thread Weak references are not implemented by Booger

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