1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.split/u-lastindex-adv-thru-failure.js b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.split/u-lastindex-adv-thru-failure.js
new file mode 100644
index 0000000000..e73f1b9c0d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.split/u-lastindex-adv-thru-failure.js
@@ -0,0 +1,30 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+    lastIndex is advanced according to width of astral symbols following match failure
+es6id: 21.2.5.11
+info: |
+    21.2.5.11 RegExp.prototype [ @@split ] ( string, limit )
+
+    [...]
+    7. Let flags be ToString(Get(rx, "flags")).
+    8. ReturnIfAbrupt(flags).
+    9. If flags contains "u", let unicodeMatching be true.
+    10. Else, let unicodeMatching be false.
+    [...]
+    24. Repeat, while q < size
+        a. Let setStatus be Set(splitter, "lastIndex", q, true).
+        b. ReturnIfAbrupt(setStatus).
+        c. Let z be RegExpExec(splitter, S).
+        d. ReturnIfAbrupt(z).
+        e. If z is null, let q be AdvanceStringIndex(S, q, unicodeMatching).
+features: [Symbol.split]
+---*/
+
+var result = /\udf06/u[Symbol.split]('\ud834\udf06');
+
+assert.sameValue(result.length, 1);
+
+reportCompare(0, 0);