// RUN: %target-typecheck-verify-swift -enable-objc-interop -swift-version 4 | |
@objc protocol Opt { | |
@objc optional func f(callback: @escaping () -> ()) | |
} | |
class Conforms : Opt { | |
private func f(callback: () -> ()) {} // expected-note {{'f' declared here}} | |
} | |
func g(x: Conforms) { | |
_ = x.f(callback: {}) // expected-error {{'f' is inaccessible due to 'private' protection level}} | |
} |