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

class A extends core::Object {
  synthetic constructor •() → self::A
    : super core::Object::•()
    ;
  method m(core::num n) → void {}
}
class B extends self::A {
  synthetic constructor •() → self::B
    : super self::A::•()
    ;
  forwarding-stub forwarding-semi-stub method /* signature-type: (core::int) → void */ m(covariant-by-declaration core::num i) → void
    return super.{self::A::m}(i);
}
class C extends self::B {
  synthetic constructor •() → self::C
    : super self::B::•()
    ;
  method m(covariant-by-declaration core::int i) → void {}
}
static method main() → dynamic {
  self::A a = new self::C::•();
  self::throws(() → void => a.{self::A::m}(1.5){(core::num) → void});
  a = new self::B::•();
  a.{self::A::m}(1.5){(core::num) → void};
}
static method throws(() → void f) → dynamic {
  try {
    f(){() → void};
  }
  on core::Object catch(final core::Object e) {
    core::print(e);
    return;
  }
  throw "Exception expected";
}