diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug675381.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug675381.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,17 @@
+function f0(p0,p1) {
+    var v0;
+    var v1;
+    while (p0) {
+        if (p0) {
+           v1 = v0 + p0;
+           v0 = v1;
+        }
+        v0 = p1;
+        if (v1) {
+            while (v1);
+            break;
+        }
+    }
+}
+f0();
+/* Don't assert. */