diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/bug-858170.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/bug-858170.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+var g = newGlobal();
+var dbg = Debugger(g);
+dbg.onNewScript = function (s) {
+    throw new Error();
+};
+dbg.uncaughtExceptionHook = function () {}
+g.eval("2 * 3");