diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Environment-getVariable-06.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Environment-getVariable-06.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+// getVariable sees properties inherited from the global object's prototype chain.
+
+var g = newGlobal();
+var dbg = Debugger(g);
+var log = '';
+dbg.onDebuggerStatement = function (frame) {
+    log += frame.environment.getVariable("x") + frame.environment.getVariable("y");
+};
+g.eval("Object.getPrototypeOf(this).x = 'a';\n" +
+       "Object.prototype.y = 'b';\n" +
+       "debugger;\n");
+assertEq(log, 'ab');