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Postings from February 2018
James E Keenan via RT wrote:
>Are you saying we should apply something like the patch attached?
...
>+ my $isa = (exists $UNIVERSAL::{"isa::"} and $UNIVERSAL::isa::VERSION)
That doesn't help: the reference to $UNIVERSAL::isa::VERSION still
vivifies $UNIVERSAL::{"isa::"} at compile time. It takes more to
avoid that. Look at the other vivification-avoiding code in Carp,
and the tests thereof.
-zefram
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