diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/surfaces-03.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/surfaces-03.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+// dumb basics of uncaughtExceptionHook
+
+load(libdir + 'asserts.js');
+
+var desc = Object.getOwnPropertyDescriptor(Debugger.prototype, "uncaughtExceptionHook");
+assertEq(typeof desc.get, 'function');
+assertEq(typeof desc.set, 'function');
+
+assertThrowsInstanceOf(function () { Debugger.prototype.uncaughtExceptionHook = null; }, TypeError);
+
+var g = newGlobal();
+var dbg = new Debugger(g);
+assertEq(desc.get.call(dbg), null);
+assertThrowsInstanceOf(function () { dbg.uncaughtExceptionHook = []; }, TypeError);
+assertThrowsInstanceOf(function () { dbg.uncaughtExceptionHook = 3; }, TypeError);
+dbg.uncaughtExceptionHook = Math.sin;
+assertEq(dbg.uncaughtExceptionHook, Math.sin);
+dbg.uncaughtExceptionHook = null;
+assertEq(dbg.uncaughtExceptionHook, null);