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$ /usr/local/bin/perl -v This is perl 5, version 12, subversion 1 (v5.12.1) built for x86_64-li +nux-ld
$ /usr/local/bin/perl -e '@ARGV = qw(foo); foo(@ARGV); sub foo { ... my $y = shift; }' panic: attempt to copy freed scalar 13280e0 to 133a630 at -e line 5.