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+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+description: >
+ Creation of new lexical environment for each evaluation of the statement
+ body
+info: |
+ IterationStatement : for ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 5. Repeat
+ [...]
+ i. Let result be the result of evaluating stmt.
+ j. Set the running execution context's LexicalEnvironment to oldEnv.
+ k. If LoopContinues(result, labelSet) is false, return ?
+ IteratorClose(iterator, UpdateEmpty(result, V)).
+ l. If result.[[Value]] is not empty, let V be result.[[Value]].
+features: [let]
+---*/
+
+let x = 'outside';
+var probeFirst, probeSecond;
+
+for (let x in { a: 0, b: 0 })
+ if (!probeFirst)
+ probeFirst = function() { return x; };
+ else
+ probeSecond = function() { return x; };
+
+
+// 13.7.5.15 EnumerateObjectProperties
+//
+// > [...] The mechanics and order of enumerating the properties is not
+// > specified [...]
+assert.notSameValue(probeFirst(), probeSecond());
+assert(
+ probeFirst() === 'a' || probeFirst() === 'b',
+ 'First binding is either "a" or "b"'
+);
+assert(
+ probeSecond() === 'a' || probeSecond() === 'b',
+ 'Second binding is either "a" or "b"'
+);
+
+reportCompare(0, 0);