1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/bug1299121.js b/js/src/jit-test/tests/debug/bug1299121.js
new file mode 100644
index 000000000..4139c9772
--- /dev/null
+++ b/js/src/jit-test/tests/debug/bug1299121.js
@@ -0,0 +1,10 @@
+var g = newGlobal();
+g.parent = this;
+g.eval("(" + function() {
+    var dbg = new Debugger(parent);
+    dbg.onExceptionUnwind = function(frame) {
+        frame.eval("h = 3");
+    };
+} + ")()");
+g = function h() { }
+g();