// Errors:
//
// pkg/front_end/testcases/regress/issue_32660.dart:13:7: Error: The non-abstract class 'C' is missing implementations for these members:
//   'foo'.
// Try to either
//  - provide an implementation,
//  - inherit an implementation from a superclass or mixin,
//  - mark the class as abstract, or
//  - provide a 'noSuchMethod' implementation.
// 
// class C extends A implements B {
//       ^
//
// pkg/front_end/testcases/regress/issue_32660.dart:24:7: Error: The non-abstract class 'E' is missing implementations for these members:
//   'foo'.
// Try to either
//  - provide an implementation,
//  - inherit an implementation from a superclass or mixin,
//  - mark the class as abstract, or
//  - provide a 'noSuchMethod' implementation.
// 
// class E extends D {
//       ^

library;
import self as self;
import "dart:core" as core;

class A extends core::Object {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
  method foo(core::int x) → dynamic
    return x;
}
class B extends core::Object {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
  method foo(core::int x, {core::int y = null}) → dynamic
    return y;
}
class C extends self::A implements self::B {
  synthetic constructor •() → void
    : super self::A::•()
    ;
  method noSuchMethod(core::Invocation i) → dynamic {
    core::print("No such method!");
    return 42;
  }
  abstract forwarding-stub method foo(core::int x, {core::int y = null}) → dynamic;
}
class D extends core::Object {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
  method foo(core::int x) → dynamic
    return x;
}
class E extends self::D {
  synthetic constructor •() → void
    : super self::D::•()
    ;
  abstract method foo(core::int x, {core::int y = null}) → dynamic;
  method noSuchMethod(core::Invocation i) → dynamic {
    core::print(i.{core::Invocation::namedArguments});
    return 42;
  }
}
static method main() → dynamic {
  self::C c = new self::C::•();
  self::E e = new self::E::•();
}