// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
template: error
desc: Error forwarding when IteratorStep returns an abrupt completion
info: >
    13.3.3.6 Runtime Semantics: IteratorBindingInitialization

    BindingRestElement : ... BindingIdentifier

    1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
       environment).
    2. ReturnIfAbrupt(lhs).
    3. Let A be ArrayCreate(0).
    4. Let n=0.
    5. Repeat,
       a. If iteratorRecord.[[done]] is false,
          i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
          ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
              true.
          iii. ReturnIfAbrupt(next).
features: [generators]
---*/

//- setup
var first = 0;
var second = 0;
var iter = function*() {
  first += 1;
  throw new Test262Error();
  second += 1;
}();
//- elems
[...x]
//- vals
iter
//- error
Test262Error
//- teardown
iter.next();
assert.sameValue(first, 1);
assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');