diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/setelem.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/setelem.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+var a;
+function setelem()
+{
+  a = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0];
+  a = a.concat(a, a, a);
+  var l = a.length;
+  for (var i = 0; i < l; i++) {
+    a[i] = i;
+  }
+  return a.toString();
+}
+assertEq(setelem(), "0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83");