[SE-0296] Enable async/await by default. #35784
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Always parse `async` and `await`, allowing the definition and use of asynchronous functions without the "experimental concurrency" flag. Note that, at present, use of asynchronous functions requires one to explicitly import or link against the `_Concurrency` library. We'll sort this out in a follow-up change. Tracked by rdar://73455330.
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@swift-ci please smoke test |
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@swift-ci please smoke test macOS |
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The LSP failure is a legitimate source break from us trying to be helpful with our |
The way in which we detected an "async" in expression context broke some well-formed code that used "async" as a variable. Narrow the check to only cases where the code will be ill-formed with "async" as an identifier.
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@swift-ci please smoke test |
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Err, by "legitimate break" I mean "it's a source compatibility bug and I'm fixing it". |
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@swift-ci please smoke test Linux |
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Always parse
asyncandawait, allowing the definition and use ofasynchronous functions without the "experimental concurrency" flag.
Note that, at present, use of asynchronous functions requires one to
explicitly import or link against the
_Concurrencylibrary. We'llsort this out in a follow-up change.
Tracked by rdar://73455330.