From @lizmat

11​:27​:12] <lizmat> rn​: my $s=Stash.new; say $s.WHAT
[11​:27​:15] <+camelia> rakudo 570d1d​: OUTPUT«(Hash)␤»
[11​:27​:15] <+camelia> ..niecza v24-51-g009f999​: OUTPUT«(Stash)␤»
[11​:27​:34] <lizmat> this means I can't use Stash as a parameter constraint :-(
[11​:28​:20] <lizmat> r​: sub S (Stash $s) { say $s }; S(Stash.new) # rakudobug?
[11​:28​:21] <+camelia> rakudo 570d1d​: OUTPUT«Nominal type check failed for parameter '$s'; expected Stash but got Hash instead␤ in sub S at /tmp/ep3aQw5kNa​:1␤ in block at /tmp/ep3aQw5kNa​:1␤␤»
[11​:28​:45] <moritz> yes, Stash.new should produces a Stash, not a Hash
[11​:29​:40] lizmat submist rakudobug

From @lizmat

Seems to be fixed.

The RT System itself - Status changed from 'new' to 'open'

From @usev6

I added tests to S02-types/declare.t and S02-types/stash.t with the following commit​: Raku/roast@658c9604e7

Since the latter file is not yet included in Rakudo's t/spectest.data I'll leave the ticket open until that is done.

From @usev6

S02-types/stash.t is now in Rakudo's t/spectest.data​: rakudo/rakudo@a6f181e7b0

@usev6 - Status changed from 'open' to 'resolved'