1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-in/head-lhs-let.js b/js/src/tests/test262/language/statements/for-in/head-lhs-let.js
new file mode 100644
index 0000000000..4e45b7c9a2
--- /dev/null
+++ b/js/src/tests/test262/language/statements/for-in/head-lhs-let.js
@@ -0,0 +1,40 @@
+// 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-iteration-statements
+es6id: 13.7
+description: >
+  The `let` token is interpreted as an Identifier when it is not followed by a
+  `[` token
+info: |
+  Syntax
+
+  IterationStatement[Yield, Return]:
+
+    for ( [lookahead ∉ { let [ } ] LeftHandSideExpression[?Yield] in
+      Expression[+In, ?Yield] ) Statement[?Yield, ?Return]
+
+    for ( ForDeclaration[?Yield] in Expression[+In, ?Yield] )
+      Statement[?Yield, ?Return]
+flags: [noStrict]
+---*/
+
+var obj = Object.create(null);
+var let, value;
+
+obj.key = 1;
+
+for ( let in obj ) ;
+
+assert.sameValue(let, 'key', 'IdentifierReference');
+
+Object.defineProperty(Array.prototype, '1', {
+  set: function(param) {
+    value = param;
+  }
+});
+for ( [let][1] in obj ) ;
+
+assert.sameValue(value, 'key', 'MemberExpression');
+
+reportCompare(0, 0);