diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Frame-live-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Frame-live-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,42 @@
+// |jit-test| debug
+// Debugger.Frame.prototype.live is true for frames on the stack and false for
+// frames that have returned
+
+var desc = Object.getOwnPropertyDescriptor(Debugger.Frame.prototype, "live");
+assertEq(typeof desc.get, "function");
+assertEq(desc.set, undefined);
+assertEq(desc.configurable, true);
+assertEq(desc.enumerable, false);
+
+var loc;
+
+var g = newGlobal();
+g.debuggeeGlobal = this;
+g.eval("var hits = 0;");
+g.eval("(" + function () {
+        var a = [];
+        var dbg = Debugger(debuggeeGlobal);
+        dbg.onDebuggerStatement = function (frame) {
+            var loc = debuggeeGlobal.loc;
+            a[loc] = frame;
+            for (var i = 0; i < a.length; i++) {
+                assertEq(a[i] === frame, i === loc);
+                assertEq(!!(a[i] && a[i].live), i >= loc);
+            }
+            hits++;
+        };
+    } + ")()");
+
+function f(n) {
+    loc = n; debugger;
+    if (n !== 0) {
+        f(n - 1);
+        loc = n; debugger;
+        eval("f(n - 1);");
+        loc = n; debugger;
+    }
+}
+
+f(4);
+assertEq(g.hits, 16 + 8*3 + 4*3 + 2*3 + 1*3);
+