// Copyright (C) 2020 devsnek. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-object-initializer-static-semantics-early-errors description: > 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 . This rule is not applied if this PropertyDefinition is contained within a Script which is being evaluated for JSON.parse (see step 4 of JSON.parse). ---*/ var result = JSON.parse('{ "__proto__": 1, "__proto__": 2 }'); assert.sameValue(result.__proto__, 2); reportCompare(0, 0);