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

class C<T extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::C<self::C::T%>
    : super core::Object::•()
    ;
  method f(covariant-by-class self::C::T? x) → void {}
}
static method g1(self::C<core::num> c) → void {
  c.{self::C::f}(1.5){(core::num?) → void};
}
static method g2(self::C<core::int> c) → void {
  c.{self::C::f}(1){(core::int?) → void};
}
static method g3(self::C<core::num> c) → void {
  c.{self::C::f}(null){(core::num?) → void};
}
static method main() → dynamic {}