Anthony Latsis fe2408c0ab TypeCheckType: Unconditionally warn about missing existential any until Swift 7 ...

https://github.com/swiftlang/swift/pull/72659 turned out to have some
source compatibility fallout that we need to fix. Instead of introducing
yet another brittle compatibility hack, stop emitting errors about a
missing `any` altogether until a future language mode.

Besides resolving the compatibility issue, this will encourage
developers to adopt any sooner and grant us ample time to gracefully
address any remaining bugs before the source compatibility burden
resurfaces.

A subsequent commit adds a diagnostic group that will allow users to
escalate these warnings to errors with `-Werror ExistentialAny`.

2025-02-12 21:20:44 +00:00

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