diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/bug625438.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/bug625438.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+// vim: set ts=8 sts=4 et sw=4 tw=99:
+
+var count = 0;
+this.watch("x", function() {
+    count++;
+});
+for(var i=0; i<10; i++) {
+    x = 2;
+}
+assertEq(count, 10);