[Concurrency] Allow synchronous functions to be a subtype of 'async' functions #34952
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@swift-ci please smoke test |
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@swift-ci please clean test Windows |
slavapestov
approved these changes
Dec 4, 2020
| @@ -551,6 +551,10 @@ ERROR(throws_functiontype_mismatch,none, | |||
| "invalid conversion from throwing function of type %0 to " | |||
| "non-throwing function type %1", (Type, Type)) | |||
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| ERROR(async_functiontype_mismatch,none, | |||
| "invalid conversion from 'async' function of type %0 to " | |||
| "synchronous function type %1", (Type, Type)) | |||
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I sorts like it this way? We trying to convert to a synchronous function type
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Implement support for synchronous functions being a subtype of 'async' functions to line up with changes to the async/await proposal. This includes:
asynccounterpartasyncprotocol requirement