1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/y-init-lastindex.js b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/y-init-lastindex.js
new file mode 100644
index 0000000000..1c71ab2f6d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/y-init-lastindex.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Honors initial value of the `lastIndex` property
+es6id: 21.2.5.8
+info: |
+    21.2.5.8 RegExp.prototype [ @@replace ] ( string, replaceValue )
+
+    [...]
+    13. Repeat, while done is false
+        a. Let result be RegExpExec(rx, S).
+
+    21.2.5.2.2 Runtime Semantics: RegExpBuiltinExec ( R, S )
+
+    [...]
+    4. Let lastIndex be ToLength(Get(R,"lastIndex")).
+    [...]
+    8. Let sticky be ToBoolean(Get(R, "sticky")).
+    9. ReturnIfAbrupt(sticky).
+    10. If global is false and sticky is false, let lastIndex be 0.
+features: [Symbol.replace]
+---*/
+
+var r = /./y;
+r.lastIndex = 1;
+assert.sameValue(r[Symbol.replace]('aaa', 'x'), 'axa');
+
+reportCompare(0, 0);