You can't pass a ref to an array slice, but you CAN pass a list of refs to the slice members. This may or may not let you do what you need to do; I hope it helps.

#!/usr/bin/perl -w

use strict;

my @x=0..10; 

sub dbl {
   foreach(@_){
       $$_*=2
   }
}

dbl(\(@x[1,2,3,5,6,7]));
print join ",",@x; print "\n";
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