1// Copyright JS Foundation and other contributors, http://js.foundation
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15var mustBeCalled = false;
16
17class C1 {
18  f () {
19    mustBeCalled = true;
20    return function () {};
21  }
22}
23
24class C2 extends C1 {
25  f () {
26    return class extends super.f() {}
27  }
28}
29
30var c = new C2;
31c.f ();
32
33assert (mustBeCalled);
34