All compilers that must be able to compile the standard library's textual
interface accept the following:
- back deployed functions declared without `@available`
- `@inlinable` back deployed functions
- `defer` blocks in back deployed functions
We can therefore revert the workarounds added in
https://github.com/apple/swift/pull/62946/ and
https://github.com/apple/swift/pull/62928/.
Resolves rdar://104085810
We shouldn't diagnose adding @_predatesConcurrency without considering the context because the attribute itself is for ABI-preserving purposes.
rdar://90738915
Adding `_runAsyncMain` to the api-digester list since we're adding
`@preconcurrency` when we add `@Sendable`. These two should negate each
other, but the api-digester isn't quite smart enough to understand that.
* Audit and correct AsyncSequence Sendability
* Annotate availability on Sendable conformances for AsyncSequences
* Fix typo of Sendable.Iterator
* Correct tests to use sendable builders
* Add @preconcurrency annotations and fixup one remaining missing @Sendable case
* Move preconcurrency to correct syntactical position
* Use unchecked Sendable conditional conformance instead of marking all internals as preconcurrency and sendable
* Use unchecked Sendable conditional conformance instead of marking all internals as preconcurrency and sendable for dropWhile
* claim ABI changes for marking of @preconcurrency as expected
Asynchronous functions isolated to global actors hop to the global at
the beginning of the function but do not hop back on return. For
`MainActor.run`, this means that we would not "hop back" off the main
actor after executing the closure, which lead to too much code running
on the main thread. Dropping the "async" ensures that we hop back.
While we my also want the general "hop back" semantics for
asynchronous actor-isolated functions, for now this addresses the
problem with `MainActor.run`.
Fixes rdar://82138050.
Add the generated ABI baseline for the _Concurency model on x86_64
macOS, along with a test that checks the built _Concurrency model
against that baseline.
Right now, the test is a mess, because we have some ABI breaks to
unwind. Add it so the test passes, and then we'll audit and address
every change.
Fixes rdar://83673282.
