diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/bug639587.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/bug639587.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+/* Don't assert. */
+
+function f(o) {
+  o == 1;
+    if (o == 2) {}
+}
+for (var i = 0; i < 20; i++)
+  f(3.14);