1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testBug566556.js b/js/src/jit-test/tests/basic/testBug566556.js
new file mode 100644
index 000000000..244be57d2
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testBug566556.js
@@ -0,0 +1,9 @@
+var msg = "";
+try {
+    this.__defineSetter__('x', Object.create);
+    this.watch('x', function() {});
+    x = 3;
+} catch (e) {
+    msg = e.toString();
+}
+assertEq(msg, "TypeError: undefined is not an object or null");