diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/bug645657.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/bug645657.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+function f() {
+    var x = 3;
+    var y = 1.2;
+    var z;
+    y = --z;
+    x = z++;
+}
+f();