diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testReplace2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testReplace2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+function testReplace2() {
+    var s = "H e l l o", s1;
+    for (i = 0; i < 100; ++i)
+        s1 = s.replace(" ", "");
+    return s1;
+}
+assertEq(testReplace2(), "He l l o");