diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug617745.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug617745.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,4 @@
+
+var array1 = ['0'];
+var array2 = (new Array(1)).splice(0,0, array1);
+assertEq("" + array2, "");