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

class A<T extends core::Object? = dynamic> extends core::Object {
  covariant-by-class field core::List<self::A::T%> x = throw "";
  synthetic constructor •() → self::A<self::A::T%>
    : super core::Object::•()
    ;
  set y(covariant-by-class core::List<self::A::T%> value) → void {}
}
static method test() → dynamic {
  self::A<core::int> a_int = new self::A::•<core::int>();
  self::A<core::Object> a_object = new self::A::•<core::Object>();
  self::A<dynamic> a_dynamic = new self::A::•<dynamic>();
  core::List<core::int> x_int = a_int.{self::A::x} = <core::int>[0];
  core::List<core::int> y_int = a_int.{self::A::y} = <core::int>[0];
  core::List<core::Object> x_object = a_object.{self::A::x} = <core::Object>[0];
  core::List<core::Object> y_object = a_object.{self::A::y} = <core::Object>[0];
  core::List<dynamic> x_dynamic = a_dynamic.{self::A::x} = <dynamic>[0];
  core::List<dynamic> y_dynamic = a_dynamic.{self::A::y} = <dynamic>[0];
  core::List<core::int> x_int_explicit = a_int.{self::A::x} = <core::int>[0];
  core::List<core::int> y_int_explicit = a_int.{self::A::y} = <core::int>[0];
  core::List<core::int> x_object_explicit = a_object.{self::A::x} = <core::int>[0];
  core::List<core::int> y_object_explicit = a_object.{self::A::y} = <core::int>[0];
  core::List<core::int> x_dynamic_explicit = a_dynamic.{self::A::x} = <core::int>[0];
  core::List<core::int> y_dynamic_explicit = a_dynamic.{self::A::y} = <core::int>[0];
  core::List<core::int> x_int_downward = a_int.{self::A::x} = <core::int>[0];
  core::List<core::int> y_int_downward = a_int.{self::A::y} = <core::int>[0];
}
static method main() → dynamic {}