[6.0] Look through @Sendable conversions when considering C function pointer conversions.
#73437
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…ter conversions. Adding (or removing) `@Sendable` doesn't add context, so it shouldn't prevent conversion to a C function pointer. Fix for rdar://127521718.
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@swift-ci Please test |
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Explanation: Fixes an incorrect diagnostic when attempting to use a Swift function as a C function pointer in Swift 6 mode.
Scope: Fixes a bug that may impact source compatibility and C interoperability when transitioning to Swift 6 mode or strict concurrency checking.
Issue: rdar://127521718
Original PR: #73436
Risk: Low. This removes an incorrect error diagnostic in a fairly narrow situation.
Testing: Test case from bug report, Swift CI
Reviewer: TBD