Perform function conversions when converting between autoclosures #17339
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This is correct because it's the apparent rule used by CSSimplify: value-to-autoclosure conversion is considered if and only if the input type is not an autoclosure function type. The real solution to this problem is that @autoclosure should be tracked as a bit on the parameter type instead of as a bit on function types. Slava has a PR leading towards that (swiftlang#10094), but it causes a source-compatibility problem when forwarding autoclosures. You really shouldn't be able to forward autoclosures, but that's an issue for the core team to resolve, and in the meantime there's this bug. Fixes rdar://41219750.
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@swift-ci Please test. |
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This is correct because it's the apparent rule used by CSSimplify: value-to-autoclosure conversion is considered if and only if the input type is not an autoclosure function type.
The real solution to this problem is that
@autoclosureshould be tracked as a bit on the parameter type instead of as a bit on function types. Slava has a PR leading towards that (#10094), but it causes a source-compatibility problem when forwarding autoclosures. You really shouldn't be able to forward autoclosures, but that's an issue for the core team to resolve, and in the meantime there's this bug.Fixes rdar://41219750.