According to the patterns spec, the pattern context type schema for a
cast pattern should be `_`. What was actually implemented was
`Object?`.
This is unlikely to make a difference in practice, since (a) cast
patterns are unlikely to be used in circumstances where the pattern
context type schema makes a difference, and (b) it takes some effort
to come up with expressions whose type inference behavior is differenc
between a schema of `Object?` and a schema of `_`.
Change-Id: I695752c8c163621a34faaa8d62b2b076c8152eb0
Bug: https://github.com/dart-lang/sdk/issues/54640
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/346383
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Chloe Stefantsova <cstefantsova@google.com>
Paul Berry
3636c8a08b