src/spread/mult-err-itr-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 IteratorValue 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).

    7.4.4 IteratorValue ( iterResult )

    1. Assert: Type(iterResult) is Object.
    2. Return Get(iterResult, "value").

    7.3.1 Get (O, P)

    [...]
    3. Return O.[[Get]](P, O).
---*/

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