And with the new refaliasing feature, as I understand it, that becomes:

use v5.22;
use feature 'refaliasing';
no warnings 'experimental::refaliasing';
sub sum {
    \local our @a = shift;
    my $total = 0;
    $total += $a[ $_ ] for 0 .. $#a;
    return $total;
}

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In reply to Re^2: local our $var; What does it do? by Anonymous Monk
in thread local our $var; What does it do? by kcott

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