| library; |
| // |
| // Problems in library: |
| // |
| // pkg/front_end/testcases/general/override_check_basic.dart:24:13: Error: The parameter 'x' of the method 'E.f1' has type 'B', which does not match the corresponding type, 'A', in the overridden method, 'C.f1'. |
| // - 'B' is from 'pkg/front_end/testcases/general/override_check_basic.dart'. |
| // - 'A' is from 'pkg/front_end/testcases/general/override_check_basic.dart'. |
| // Change to a supertype of 'A', or, for a covariant parameter, a subtype. |
| // void f1(B x) {} |
| // ^ |
| // pkg/front_end/testcases/general/override_check_basic.dart:10:8: Context: This is the overridden method ('f1'). |
| // void f1(A x) {} |
| // ^ |
| // |
| // pkg/front_end/testcases/general/override_check_basic.dart:25:15: Error: The parameter 'x' of the method 'E.f2' has type 'B?', which does not match the corresponding type, 'A?', in the overridden method, 'C.f2'. |
| // - 'B' is from 'pkg/front_end/testcases/general/override_check_basic.dart'. |
| // - 'A' is from 'pkg/front_end/testcases/general/override_check_basic.dart'. |
| // Change to a supertype of 'A?', or, for a covariant parameter, a subtype. |
| // void f2([B? x]) {} |
| // ^ |
| // pkg/front_end/testcases/general/override_check_basic.dart:11:8: Context: This is the overridden method ('f2'). |
| // void f2([A? x]) {} |
| // ^ |
| // |
| // pkg/front_end/testcases/general/override_check_basic.dart:26:15: Error: The parameter 'x' of the method 'E.f3' has type 'B?', which does not match the corresponding type, 'A?', in the overridden method, 'C.f3'. |
| // - 'B' is from 'pkg/front_end/testcases/general/override_check_basic.dart'. |
| // - 'A' is from 'pkg/front_end/testcases/general/override_check_basic.dart'. |
| // Change to a supertype of 'A?', or, for a covariant parameter, a subtype. |
| // void f3({B? x}) {} |
| // ^ |
| // pkg/front_end/testcases/general/override_check_basic.dart:12:8: Context: This is the overridden method ('f3'). |
| // void f3({A? x}) {} |
| // ^ |
| // |
| // pkg/front_end/testcases/general/override_check_basic.dart:27:11: Error: The return type of the method 'E.f4' is 'Object?', which does not match the return type, 'A?', of the overridden method, 'C.f4'. |
| // - 'Object' is from 'dart:core'. |
| // - 'A' is from 'pkg/front_end/testcases/general/override_check_basic.dart'. |
| // Change to a subtype of 'A?'. |
| // Object? f4() {} |
| // ^ |
| // pkg/front_end/testcases/general/override_check_basic.dart:13:6: Context: This is the overridden method ('f4'). |
| // A? f4() {} |
| // ^ |
| // |
| import self as self; |
| import "dart:core" as core; |
| |
| class A extends core::Object { |
| synthetic constructor •() → self::A |
| : super core::Object::•() |
| ; |
| } |
| class B extends self::A { |
| synthetic constructor •() → self::B |
| : super self::A::•() |
| ; |
| } |
| class C extends core::Object { |
| synthetic constructor •() → self::C |
| : super core::Object::•() |
| ; |
| method f1(self::A x) → void {} |
| method f2([self::A? x = #C1]) → void {} |
| method f3({self::A? x = #C1}) → void {} |
| method f4() → self::A? {} |
| } |
| class D extends self::C { |
| synthetic constructor •() → self::D |
| : super self::C::•() |
| ; |
| method f1(core::Object x) → void {} |
| method f2([core::Object? x = #C1]) → void {} |
| method f3({core::Object? x = #C1}) → void {} |
| method f4() → self::B? {} |
| } |
| class E extends self::C { |
| synthetic constructor •() → self::E |
| : super self::C::•() |
| ; |
| method f1(self::B x) → void {} |
| method f2([self::B? x = #C1]) → void {} |
| method f3({self::B? x = #C1}) → void {} |
| method f4() → core::Object? {} |
| } |
| static method main() → dynamic {} |
| |
| constants { |
| #C1 = null |
| } |