Hahahaha, close but not quite the responsible patch , maybe

http://perl5.git.perl.org/perl.git?a=search&h=HEAD&st=grep&s={%25{ http://perl5.git.perl.org/perl.git?a=search&h=HEAD&st=grep&s={%40{

652 ####### die 5
653 eval {die [[qq [Just another Perl Hacker]]]};; print
654 ${${${@}}[$#{@{${@}}}]}[$#{${@{${@}}}[$#{@{${@}}}]}]
655 SKIP: Abuses a fixed bug; what is in $#{...} must be an arrayref, 
+not an array
[download]

happened in 2006 http://perl5.git.perl.org/perl.git/commit/4d5114b49dd32c765f1137162d67b9cab5c5ba5a?f=t/japh/abigail.t# perl5.git.perl.org Git - perl.git/commit - t/japh/abigail.t

Fixed bug RT #37886, symbolic dereferencing was allowed in the argument of defined even under the influence of use strict 'refs'.

Bug #37886 for perl5: strict 'refs' doesn't apply inside defined

fixed by defined @$foo and defined %$bar should be subject to strict 'refs';