// Copyright (C) 2016 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 13.7.5.11 description: > Completion value when head has no declaration and iteration occurs info: | IterationStatement : for ( LeftHandSideExpression in Expression ) Statement 1. Let keyResult be ForIn/OfHeadEvaluation( « », Expression, enumerate). 2. ReturnIfAbrupt(keyResult). 3. Return ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, keyResult, assignment, labelSet). 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation [...] 2. Let V = undefined. [...] 5. Repeat a. Let nextResult be IteratorStep(iterator). b. ReturnIfAbrupt(nextResult). c. If nextResult is false, return NormalCompletion(V). [...] k. Let result be the result of evaluating stmt. [...] n. If result.[[value]] is not empty, let V be result.[[value]]. ---*/ assert.sameValue(eval('var a; 1; for (a in { x: 0 }) { }'), undefined); assert.sameValue(eval('var b; 2; for (b in { x: 0 }) { 3; }'), 3); reportCompare(0, 0);