diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/uncaughtExceptionHook-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/uncaughtExceptionHook-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+// Uncaught exceptions in the debugger itself are delivered to the
+// uncaughtExceptionHook.
+
+var g = newGlobal();
+var dbg = new Debugger(g);
+var log;
+dbg.onDebuggerStatement = function () {
+    log += 'x';
+    throw new TypeError("fail");
+};
+dbg.uncaughtExceptionHook = function (exc) {
+    assertEq(this, dbg);
+    assertEq(exc instanceof TypeError, true);
+    log += '!';
+};
+
+log = '';
+g.eval("debugger");
+assertEq(log, 'x!');