src/spread/mult-err-iter-get-value.case

// 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