The assignment to a sigilless in a () no longer results in a Null PMC access error -- but the sigilless doesn't contain the correct value after assignment:
$ perl6-m -e 'my ($x0, \x1) = (1, 2); say $x0; say x1' 1 (Any) $ perl6-m -e 'my (\x1) = 1; say x1' (Any) $ perl6-m -e 'my \x1 = 1; say x1' 1 The behaves identical on Moar, Parrot and JVM.