1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/jaeger/bug639478-2.js b/js/src/jit-test/tests/jaeger/bug639478-2.js
new file mode 100644
index 0000000000..3412dfa3e4
--- /dev/null
+++ b/js/src/jit-test/tests/jaeger/bug639478-2.js
@@ -0,0 +1,12 @@
+var y;
+function f() {
+    for(var _ in [3.14]) {
+        y = 3.14;
+        y = y ^ y;
+        return y;
+        
+        function g() {
+        }
+    }
+}
+assertEq(f(), 0);