1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/result-coerce-index.js b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/result-coerce-index.js
new file mode 100644
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+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/result-coerce-index.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-regexp.prototype-@@replace
+description: >
+  Integer coercion of "index" property of the value returned by RegExpExec.
+info: |
+  RegExp.prototype [ @@replace ] ( string, replaceValue )
+
+  [...]
+  14. For each result in results, do
+    [...]
+    e. Let position be ? ToInteger(? Get(result, "index")).
+    [...]
+    k. If functionalReplace is true, then
+      i. Let replacerArgs be « matched ».
+      ii. Append in list order the elements of captures to the end of the List replacerArgs.
+      iii. Append position and S to replacerArgs.
+      [...]
+      v. Let replValue be ? Call(replaceValue, undefined, replacerArgs).
+features: [Symbol.replace]
+---*/
+
+var r = /./;
+var coercibleIndex = {
+  length: 1,
+  0: '',
+  index: {
+    valueOf: function() {
+      return 2.9;
+    },
+  },
+};
+r.exec = function() {
+  return coercibleIndex;
+};
+
+var replacer = function(_matched, position) {
+  return position;
+};
+
+assert.sameValue(r[Symbol.replace]('abcd', replacer), 'ab2cd');
+
+reportCompare(0, 0);