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// |reftest| error:SyntaxError
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-__proto__-property-names-in-object-initializers
es6id: B.3.1
description: Duplicate `__proto__` property
info: |
It is a Syntax Error if PropertyNameList of PropertyDefinitionList contains
any duplicate entries for "__proto__" and at least two of those entries
were obtained from productions of the form
PropertyDefinition : PropertyName : AssignmentExpression .
negative:
phase: parse
type: SyntaxError
---*/
$DONOTEVALUATE();
({
__proto__: null,
other: null,
'__proto__': null
});