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// Copyright (C) 2014 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-runtime-semantics-classdefinitionevaluation
description: >
The `this` value of a null-extending class isn't automatically initialized
info: |
Runtime Semantics: ClassDefinitionEvaluation
[...]
15. If ClassHeritageopt is present, then set F's [[ConstructorKind]] internal slot to "derived".
[...]
12.2.2.1 Runtime Semantics: Evaluation
PrimaryExpression : this
1. Return ? ResolveThisBinding( ).
8.3.4 ResolveThisBinding ( )
[...]
2. Return ? envRec.GetThisBinding().
8.1.1.3.4 GetThisBinding ( )
[...]
3. If envRec.[[ThisBindingStatus]] is "uninitialized", throw a ReferenceError exception.
[...]
---*/
class C extends null {
constructor() {
// Use an arrow function to access the `this` binding of the class constructor.
assert.throws(ReferenceError, () => {
this;
});
}
}
assert.throws(ReferenceError, function() {
new C();
});
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