Iceman

@swift-main -swift-version 6

func f( isolation: isolated (any Actor)? = #isolation, operation: () async throws -> () ) async throws { try await withoutActuallyEscaping(operation) { operation in try await operation() } }

exit status: 1 with

<stdin>:5:50: error: pattern that the region based isolation checker does not understand how to check. Please file a bug 3 | operation: () async throws -> () 4 | ) async throws { 5 | try await withoutActuallyEscaping(operation) { operation in | `- error: pattern that the region based isolation checker does not understand how to check. Please file a bug 6 | try await operation() 7 | }