diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Frame-eval-05.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Frame-eval-05.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+// var declarations in strict frame.eval do not modify the frame
+
+var g = newGlobal();
+var dbg = new Debugger(g);
+var cv;
+dbg.onDebuggerStatement = function (frame) {
+    cv = frame.eval("'use strict'; var a = 2; h();");
+};
+g.a = 1;
+g.eval("function f(s) { function h() { return a; } eval(s); debugger; } ");
+g.eval("f('0');");
+assertEq(cv.return, 1);
+g.eval("f('var a = 3;');");
+assertEq(cv.return, 3);