Oli Scherer f3b7dd6388 Add AliasKind::Weak for type aliases.
Only use it when the type alias contains an opaque type.

Also does wf-checking on such type aliases.
2023-06-16 19:39:48 +00:00
..
2023-06-06 11:50:24 +02:00
2023-06-11 18:27:26 +08:00