diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/pic/length_string.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/pic/length_string.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+// length, string
+
+var expected = "3,6,4,3,6,4,3,6,4,3,6,4,";
+var actual = '';
+
+function f() {
+  var ss = [ "abc", "foobar", "quux" ];
+
+  for (var i = 0; i < 12; ++i) {
+    actual += ss[i%3].length + ',';
+  }
+}
+
+f();
+
+assertEq(actual, expected);