&vec( $thing, @params ) = 1;

##</code><code>##

sub myvec :lvalue { CORE::vec( $_[ 0 ], $_[ 1 ], $_[ 2 ] ) }

##</code><code>##

my $thing = 'a' x 10;
my @params = ( 2, 3 );
myvec( $thing, @p ) = 1;;
Illegal number of bits in vec