diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug717251.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug717251.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+// Binary: cache/js-dbg-64-4de07a341aab-linux
+// Flags: -m -n -a
+//
+this.__proto__ = [];
+var msPerDay =   86400000;
+for ( var time = 0, year = 1969; year >= 0; year-- ) {
+  time -= TimeInYear(year);
+}
+function DaysInYear( y ) {}
+function TimeInYear( y ) {
+  return ( DaysInYear(y) * msPerDay );
+}