// Copyright (C) 2016 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- desc: > Spread operator following other arguments when GetIterator fails (@@iterator function return value) template: error features: [Symbol.iterator] info: | 12.3.6.1 Runtime Semantics: ArgumentListEvaluation ArgumentList : ArgumentList , ... AssignmentExpression 1. Let precedingArgs be the result of evaluating ArgumentList. 2. Let spreadRef be the result of evaluating AssignmentExpression. 3. Let iterator be GetIterator(GetValue(spreadRef) ). 4. ReturnIfAbrupt(iterator). 7.4.1 GetIterator ( obj, method ) [...] 2. Let iterator be ? Call(method, obj). 3. If Type(iterator) is not Object, throw a TypeError exception. ---*/ //- setup var iter = {}; Object.defineProperty(iter, Symbol.iterator, { get: function() { return null; } }); //- error TypeError //- args 0, ...iter