Slava Pestov 7c29aaf3e2 Sema: Fix generics invariant violations in override checking ...

Override checking checks if the derived declaration's generic
signature is compatible with the base, but it does this after
doing a bunch of other checks which feed potentially invalid
type parameters to generic signature queries.

Now that the requirement machine is stricter about this kind
of this, re-organize some code to get around this.

Unfortunately this regresses a diagnostic, because we reject
candidates with mismatched generic requirements earlier in
the process.

2021-08-23 21:52:55 -04:00

58 KiB

Raw Blame History

View Raw