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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 19.2.1
description: >
super must be called to initialize Function internal slots
info: |
19.2.1 The Function Constructor
...
The Function constructor is designed to be subclassable. It may be used as the
value of an extends clause of a class definition. Subclass constructors that
intend to inherit the specified Function behaviour must include a super call
to the Function constructor to create and initialize a subclass instances with
the internal slots necessary for built-in function behaviour.
...
---*/
class Fn extends Function {
constructor() {}
}
assert.throws(ReferenceError, function() {
new Fn();
});
class Fn2 extends Function {
constructor() {
super();
}
}
var fn = new Fn2();
assert(fn instanceof Function);
reportCompare(0, 0);