Implement reabstraction of inouts in witness and reabstraction thunks #18891
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This is a longstanding gap in the implementation that quite possibly never bit anyone in the wild. I've only gotten around to implementing it now because this same code path will be used to reabstract inout yields. That means that, rather than only affecting functions with an abstraction difference in an inout parameter type, this can affect all storage with any abstraction difference in the stored value type. So it's time to fill in this gap.
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@swift-ci Please smoke test and merge. |
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This is a longstanding gap in the implementation that quite possibly never bit anyone in the wild. I've only gotten around to implementing it now because this same code path will be used to reabstract
inoutyields. That means that, rather than only affecting functions with an abstraction difference in an inout parameter type, this can affect all storage with any abstraction difference in the stored value type. So it's time to fill in this gap.