Commit Graph

1 Commits

Author SHA1 Message Date
Allan Shortlidge
fb03b4aa04 Sema: Relax availability checking for @MainActor.
The `@MainActor` global actor constraint on a declaration does not carry an
inherent ABI impact and therefore use of this constraint should not be limited
to OS versions where Swift concurrency is available.

Resolves rdar://105610970
2023-03-16 14:23:36 -07:00