diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/bug617440.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/bug617440.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+
+function f() {
+    var x = 1.23;
+    function g() {
+        var y = x++;
+        assertEq(y, 1.23);
+    }
+    g();
+    assertEq(x, 2.23);
+}
+f();