diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Object-gc-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Object-gc-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+// Debugger.Objects keep their referents alive.
+
+var g = newGlobal();
+var dbg = Debugger(g);
+var arr = [];
+dbg.onDebuggerStatement = function (frame) { arr.push(frame.eval("[]").return); };
+g.eval("for (var i = 0; i < 10; i++) debugger;");
+assertEq(arr.length, 10);
+
+gc();
+
+for (var i = 0; i < arr.length; i++)
+    assertEq(arr[i].class, "Array");
+