1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/subclass/builtin-objects/RegExp/lastIndex.js b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/RegExp/lastIndex.js
new file mode 100644
index 0000000000..bf0726227b
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/RegExp/lastIndex.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 21.2.6.1
+description: Instances has the own property lastIndex
+info: |
+  21.2.6.1 lastIndex
+
+  The value of the lastIndex property specifies the String index at which to
+  start the next match. It is coerced to an integer when used (see 21.2.5.2.2).
+  This property shall have the attributes { [[Writable]]: true, [[Enumerable]]:
+  false, [[Configurable]]: false }.
+includes: [propertyHelper.js]
+---*/
+
+class RE extends RegExp {}
+
+var re = new RE('39?');
+
+re.exec('TC39');
+
+assert.sameValue(re.lastIndex, 0);
+
+verifyWritable(re, 'lastIndex');
+verifyNotEnumerable(re, 'lastIndex');
+verifyNotConfigurable(re, 'lastIndex');
+
+reportCompare(0, 0);