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

class C<T extends core::Object? = dynamic> extends core::Object {
  covariant-by-class field self::C::T% t;
  constructor •(self::C::T% t) → self::C<self::C::T%>
    : self::C::t = t, super core::Object::•()
    ;
}
static method test(dynamic y) → dynamic {
  self::C<core::int> x = new self::C::•<core::int>(42);
  self::C<core::int> c_int = new self::C::•<core::int>(y as{TypeError,ForDynamic,ForNonNullableByDefault} core::int);
  self::C<core::num> c_num = new self::C::•<core::num>(123);
  self::C<dynamic> c_dynamic = new self::C::•<dynamic>(42);
}