library test;
//
// Problems in library:
//
// pkg/front_end/testcases/runtime_checks_new/contravariant_generic_return_with_compound_assign_implicit_downcast.dart:32:14: Error: The type 'C<num>' of the getter 'D.value' is not assignable to the type 'int Function(int)' of the setter 'D.value'.
//  - 'C' is from 'pkg/front_end/testcases/runtime_checks_new/contravariant_generic_return_with_compound_assign_implicit_downcast.dart'.
//   C<num> get value => getValue;
//              ^^^^^
// pkg/front_end/testcases/runtime_checks_new/contravariant_generic_return_with_compound_assign_implicit_downcast.dart:34:12: Context: This is the declaration of the setter 'D.value'.
//   void set value(int Function(int) value) {
//            ^^^^^
//
// pkg/front_end/testcases/runtime_checks_new/contravariant_generic_return_with_compound_assign_implicit_downcast.dart:51:44: Error: A value of type 'num Function(num)' can't be assigned to a variable of type 'int Function(int)'.
//   d.value /*@checkReturn=(num*) ->* num**/ += 1;
//                                            ^
//
// pkg/front_end/testcases/runtime_checks_new/contravariant_generic_return_with_compound_assign_implicit_downcast.dart:55:46: Error: A value of type 'num Function(num)' can't be assigned to a variable of type 'int Function(int)'.
//     d.value /*@checkReturn=(num*) ->* num**/ += 1;
//                                              ^
//
import self as self;
import "dart:core" as core;

class C<T extends core::Object* = dynamic> extends core::Object {
  final field (self::C::T*) →* core::num* plusResult;
  constructor •((self::C::T*) →* core::num* plusResult) → self::C<self::C::T*>*
    : self::C::plusResult = plusResult, super core::Object::•()
    ;
  operator +(core::int* i) → (self::C::T*) →* core::num*
    return this.{self::C::plusResult}{(self::C::T*) →* core::num*};
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class D extends core::Object {
  final field self::C<core::num*>* getValue;
  field (core::int*) →* core::int* setValue = null;
  constructor •(self::C<core::num*>* getValue) → self::D*
    : self::D::getValue = getValue, super core::Object::•()
    ;
  get value() → self::C<core::num*>*
    return this.{self::D::getValue}{self::C<core::num*>*};
  set value((core::int*) →* core::int* value) → void {
    this.{self::D::setValue} = value;
  }
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
static method expectTypeError(() →* void callback) → void {
  try {
    callback(){() →* void};
    throw "Expected TypeError, did not occur";
  }
  on core::TypeError* catch(no-exception-var) {
  }
}
static method expect(core::Object* value, core::Object* expected) → void {
  if(!(value =={core::Object::==}{(core::Object*) →* core::bool*} expected)) {
    throw "Expected ${expected}, got ${value}";
  }
}
static method numToInt(core::num* n) → core::int*
  return 1;
static method numToNum(core::num* n) → core::num*
  return 2;
static method main() → void {
  self::D* d = new self::D::•(new self::C::•<core::num*>(#C1));
  let final self::D* #t1 = d in #t1.{self::D::value} = invalid-expression "pkg/front_end/testcases/runtime_checks_new/contravariant_generic_return_with_compound_assign_implicit_downcast.dart:51:44: Error: A value of type 'num Function(num)' can't be assigned to a variable of type 'int Function(int)'.
  d.value /*@checkReturn=(num*) ->* num**/ += 1;
                                           ^" in (#t1.{self::D::value}{self::C<core::num*>*}.{self::C::+}(1){(core::int*) →* (core::num*) →* core::num*} as{TypeError,CovarianceCheck} (core::num*) →* core::num*) as{TypeError} (core::int*) →* core::int*;
  self::expect(let final self::D* #t2 = d in let final core::int* #t3 = 0 in #t2.{self::D::setValue}{(core::int*) →* core::int*}(#t3){(core::int*) →* core::int*}, 1);
  d = new self::D::•(new self::C::•<core::num*>(#C2));
  self::expectTypeError(() → Null {
    let final self::D* #t4 = d in #t4.{self::D::value} = invalid-expression "pkg/front_end/testcases/runtime_checks_new/contravariant_generic_return_with_compound_assign_implicit_downcast.dart:55:46: Error: A value of type 'num Function(num)' can't be assigned to a variable of type 'int Function(int)'.
    d.value /*@checkReturn=(num*) ->* num**/ += 1;
                                             ^" in (#t4.{self::D::value}{self::C<core::num*>*}.{self::C::+}(1){(core::int*) →* (core::num*) →* core::num*} as{TypeError,CovarianceCheck} (core::num*) →* core::num*) as{TypeError} (core::int*) →* core::int*;
  });
  self::expect(d.{self::D::setValue}{(core::int*) →* core::int*}, null);
}

constants  {
  #C1 = static-tearoff self::numToInt
  #C2 = static-tearoff self::numToNum
}