src/spread/mult-err-itr-step.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 IteratorStep fails
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).

    7.4.5 IteratorStep ( iterator )

    1. Let result be IteratorNext(iterator).
    2. ReturnIfAbrupt(result).

    7.4.2 IteratorNext ( iterator, value )

    1. If value was not passed, then
       a. Let result be Invoke(iterator, "next", « »).
    [...]
    3. ReturnIfAbrupt(result).
---*/

//- setup
var iter = {};
iter[Symbol.iterator] = function() {
  return {
    next: function() {
      throw new Test262Error();
    }
  };
};
//- error
Test262Error
//- args
0, ...iter