diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/baseline/bug844383.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/baseline/bug844383.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+s = newGlobal()
+try {
+    evalcx("\
+        function g() {\
+            h()\
+        }\
+        for (p in this) {\
+            function h(h) {\
+                ''instanceof 5\
+            }\
+        }\
+        h.valueOf=g;\
+        h==9\
+    ", s)
+} catch (e) {}
+try {
+    evalcx("throw h", s)
+} catch (e) {
+    try {
+	"" + e
+    } catch(e) {}
+}