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// RUN: %empty-directory(%t)
// RUN: %empty-directory(%t/NonAPI)
// RUN: %empty-directory(%t/API)
// RUN: split-file %s %t
// RUN: %target-swift-emit-module-interface(%t/NonAPI/Library.swiftinterface) %t/Library.swift -module-name Library -target %target-swift-5.8-abi-triple
// RUN: %target-swift-emit-module-interface(%t/API/Library.swiftinterface) %t/Library.swift -module-name Library -target %target-swift-5.8-abi-triple -library-level api
// Build Client.swift against the Library.swiftinterface without
// `-library-level api`. Since the deployment target of the library is
// SwiftStdlib 5.8, the newer overload that returns a String should be selected
// by overload resolution during the implicit module build.
// RUN: %target-build-swift %t/Client.swift -o %t/NonAPI/client -I %t/NonAPI/
// RUN: %target-codesign %t/NonAPI/client
// RUN: %target-run %t/NonAPI/client | %FileCheck %s --check-prefix=CHECK-NON-API
// Build Client.swift against the Library.swiftinterface with
// `-library-level api`. Since the deployment target of the client that will
// get a copy of `fragileFuncUsingOverload()` is earlier than SwiftStdlib 5.8,
// the older overload returning an Int should be selected during the implicit
// module build even though the library targets SwiftStdlib 5.8.
// RUN: %target-build-swift %t/Client.swift -o %t/API/client -I %t/API/
// RUN: %target-codesign %t/API/client
// RUN: %target-run %t/API/client | %FileCheck %s --check-prefix=CHECK-API
// REQUIRES: executable_test
// REQUIRES: OS=macosx || OS=ios || OS=tvos || OS=watchos
//--- Library.swift
@_disfavoredOverload
@_alwaysEmitIntoClient
public func overloadedFunc() -> Int {
return 1234
}
@available(SwiftStdlib 5.8, *)
@_alwaysEmitIntoClient
public func overloadedFunc() -> String {
return "String"
}
@_alwaysEmitIntoClient
public func fragileFuncUsingOverload() -> any CustomStringConvertible {
return overloadedFunc()
}
//--- Client.swift
import Library
// CHECK-NON-API: String
// CHECK-API: 1234
print(fragileFuncUsingOverload())
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