diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Environment-getVariable-08.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Environment-getVariable-08.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+// getVariable sees properties inherited from a with-object's prototype chain.
+
+var g = newGlobal();
+var dbg = Debugger(g);
+var v;
+dbg.onDebuggerStatement = function (frame) {
+    v = frame.environment.getVariable("x");
+};
+g.eval("var x = 1; { let x = 2; with (Object.create({x: 3})) { debugger; } }");
+assertEq(v, 3);