diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug651451-2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug651451-2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+var arr = [1, 2, 3, 4, 5];
+arr.length = 100;
+arr.pop();
+assertEq(arr.length, 99);
+arr.pop();
+assertEq(arr.length, 98);
\ No newline at end of file