library /*isNonNullableByDefault*/;
import self as self;
import "test_lib.dart" as tes;

import "org-dartlang-testcase:///test_lib.dart";

static method main() → dynamic {
  tes::test();
}

library /*isNonNullableByDefault*/;
import self as tes;
import "opt_out_lib.dart" as opt;
import "dart:core" as core;

import "org-dartlang-testcase:///opt_out_lib.dart";

static method test() → dynamic {
  opt::SubClass sub = new opt::SubClass::•();
  core::int i = sub.{opt::_SubClass&Class&Mixin::classMethod}(null){(core::int*) →* core::int*};
  core::int j = sub.{opt::_SubClass&Class&Mixin::mixinMethod}(null){(core::int*) →* core::int*};
  sub.{opt::_SubClass&Class&Mixin::classField2} = sub.{opt::_SubClass&Class&Mixin::classField1}{core::int*};
  sub.{opt::_SubClass&Class&Mixin::mixinField2} = sub.{opt::_SubClass&Class&Mixin::mixinField1}{core::int*};
}

library;
//
// Problems in library:
//
// pkg/front_end/testcases/dart2js/mixin_from_opt_in/opt_out_lib.dart:5:1: Error: A library can't opt out of null safety by default, when using sound null safety.
// // @dart=2.9
// ^^^^^^^^^^^^
//
import self as opt;
import "opt_in_lib.dart" as opt2;
import "dart:core" as core;

import "org-dartlang-testcase:///opt_in_lib.dart";

abstract class _SubClass&Class&Mixin = opt2::Class with opt2::Mixin /*isAnonymousMixin*/  {
  synthetic constructor •() → opt::_SubClass&Class&Mixin*
    : super opt2::Class::•()
    ;
  mixin-super-stub get mixinField1() → core::int*
    return super.{opt2::Mixin::mixinField1};
  mixin-super-stub set mixinField1(core::int* value) → void
    return super.{opt2::Mixin::mixinField1} = value;
  mixin-super-stub get mixinField2() → core::int*
    return super.{opt2::Mixin::mixinField2};
  mixin-super-stub set mixinField2(core::int* value) → void
    return super.{opt2::Mixin::mixinField2} = value;
  abstract member-signature get classField1() → core::int*; -> opt2::Class::classField1
  abstract member-signature set classField1(core::int* value) → void; -> opt2::Class::classField1
  abstract member-signature get classField2() → core::int*; -> opt2::Class::classField2
  abstract member-signature set classField2(core::int* value) → void; -> opt2::Class::classField2
  abstract member-signature method classMethod(core::int* i) → core::int*; -> opt2::Class::classMethod
  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
  method /*isNonNullableByDefault, from org-dartlang-testcase:///opt_in_lib.dart */ mixinMethod(core::int i) → core::int? {
    super.{core::Object::toString}();
  }
}
class SubClass extends opt::_SubClass&Class&Mixin {
  synthetic constructor •() → opt::SubClass*
    : super opt::_SubClass&Class&Mixin::•()
    ;
  static method _#new#tearOff() → opt::SubClass*
    return new opt::SubClass::•();
}

library /*isNonNullableByDefault*/;
import self as opt2;
import "dart:core" as core;

class Class extends core::Object {
  field core::int? classField1 = null;
  field core::int classField2 = 0;
  synthetic constructor •() → opt2::Class
    : super core::Object::•()
    ;
  method classMethod(core::int i) → core::int? {}
  static method _#new#tearOff() → opt2::Class
    return new opt2::Class::•();
}
abstract class Mixin extends core::Object /*isMixinDeclaration*/  {
  field core::int? mixinField1 = null;
  field core::int mixinField2 = 0;
  method mixinMethod(core::int i) → core::int? {
    super.{core::Object::toString}();
  }
}