diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Frame-eval-06.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Frame-eval-06.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+// frame.eval throws if frame is a generator frame that isn't currently on the stack
+
+load(libdir + "asserts.js");
+
+var g = newGlobal();
+g.eval("function gen(a) { debugger; yield a; }");
+g.eval("function test() { debugger; }");
+var dbg = new Debugger(g);
+var genframe;
+var hits = 0;
+dbg.onDebuggerStatement = function (frame) {
+    if (frame.callee.name == 'gen')
+        genframe = frame;
+    else
+        assertThrowsInstanceOf(function () { genframe.eval("a"); }, Error);
+    hits++;
+};
+g.eval("var it = gen(42); assertEq(it.next(), 42); test();");
+assertEq(hits, 2);