library /*isNonNullableByDefault*/;
//
// Problems in library:
//
// pkg/front_end/testcases/nnbd/override_checks.dart:14:7: Error: The field 'B2.bar' has type 'num', which does not match the corresponding type, 'num?', in the overridden setter, 'B1.bar'.
//   num bar = 3.14; // Error in strong mode and Warning in weak mode.
//       ^
// pkg/front_end/testcases/nnbd/override_checks.dart:8:12: Context: This is the overridden method ('bar').
//   void set bar(num? value) {}
//            ^
//
// pkg/front_end/testcases/nnbd/override_checks.dart:15:12: Error: The return type of the method 'B2.baz' is 'num?', which does not match the return type, 'num', of the overridden method, 'B1.baz'.
// Change to a subtype of 'num'.
//   num? get baz => null; // Error in strong mode and Warning in weak mode.
//            ^
// pkg/front_end/testcases/nnbd/override_checks.dart:9:11: Context: This is the overridden method ('baz').
//   num get baz => 42;
//           ^
//
// pkg/front_end/testcases/nnbd/override_checks.dart:16:17: Error: The parameter 'value' of the method 'B2.hest' has type 'num', which does not match the corresponding type, 'num?', in the overridden method, 'B1.hest'.
// Change to a supertype of 'num?', or, for a covariant parameter, a subtype.
//   void hest(num value) {} // Error in strong mode and Warning in weak mode.
//                 ^
// pkg/front_end/testcases/nnbd/override_checks.dart:10:8: Context: This is the overridden method ('hest').
//   void hest(num? value) {}
//        ^
//
// pkg/front_end/testcases/nnbd/override_checks.dart:20:18: Error: The type 'int?' doesn't extend 'int'.
// Try using a different type as argument.
//   factory C1() = C2<int?>; // Error in strong mode and Warning in weak mode.
//                  ^
//
// pkg/front_end/testcases/nnbd/override_checks.dart:27:27: Error: The constructor function type 'D Function(num)' isn't a subtype of 'D Function(num?)'.
//  - 'D' is from 'pkg/front_end/testcases/nnbd/override_checks.dart'.
//   factory D.bar(num? x) = D.foo; // Error in strong mode and Warning in weak mode.
//                           ^
//
import self as self;
import "dart:core" as core;

class A<X extends core::num = core::num> extends core::Object {
  synthetic constructor •() → self::A<self::A::X>
    ;
}
class B1 extends core::Object {
  synthetic constructor •() → self::B1
    ;
  set bar(core::num? value) → void
    ;
  get baz() → core::num
    ;
  method hest(core::num? value) → void
    ;
}
class B2 extends self::B1 {
  field core::num bar;
  synthetic constructor •() → self::B2
    ;
  get baz() → core::num?
    ;
  method hest(core::num value) → void
    ;
}
class C1 extends core::Object {
  static field dynamic _redirecting# = <dynamic>[self::C1::•]/*isLegacy*/;
  static factory •() → self::C1
    let dynamic #redirecting_factory = self::C2::• in let core::int? #typeArg0 = null in invalid-expression;
}
class C2<X extends core::int = core::int> extends core::Object implements self::C1 {
  synthetic constructor •() → self::C2<self::C2::X>
    ;
}
class D extends core::Object {
  static field dynamic _redirecting# = <dynamic>[self::D::bar]/*isLegacy*/;
  constructor foo(core::num x) → self::D
    ;
  static factory bar(core::num? x) → self::D
    let dynamic #redirecting_factory = self::D::foo in invalid-expression;
}
static method main() → dynamic
  ;