diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testGeneratorDieButScopeAlive.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testGeneratorDieButScopeAlive.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+var g = newGlobal();
+var dbg = new Debugger(g);
+
+var hits = 0;
+dbg.onDebuggerStatement = function(frame) {
+    ++hits;
+    frame.older.eval("escaped = function() { return y }");
+}
+
+var arr = [];
+const N = 10;
+
+for (var i = 0; i < N; ++i) {
+    g.escaped = undefined;
+    g.eval("function h() { debugger }");
+    g.eval("(function () { var y = {p:42}; h(); yield })().next();");
+    assertEq(g.eval("escaped().p"), 42);
+    arr.push(g.escaped);
+}
+
+gc();
+
+for (var i = 0; i < N; ++i)
+    arr[i]();