// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -typecheck -parse-as-library -verify %s
// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -typecheck -parse-as-library -enable-upcoming-feature DeprecateApplicationMain -verify -verify-additional-prefix deprecated- %s

// REQUIRES: objc_interop
// REQUIRES: swift_feature_DeprecateApplicationMain

import AppKit

class DelegateBase : NSObject, NSApplicationDelegate { }

@NSApplicationMain // expected-deprecated-warning {{'NSApplicationMain' is deprecated; this is an error in the Swift 6 language mode}}
// expected-deprecated-note@-1 {{use '@main' instead}} {{1-19=@main}}
class MyDelegate : DelegateBase { }