diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug915903.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug915903.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+x = {};
+x.toString = (function(stdlib, heap) {
+    Int8ArrayView = new stdlib.Int8Array(heap);
+    Float32ArrayView = new stdlib.Float32Array(heap);
+    function f() {
+        Int8ArrayView[0] = Float32ArrayView[0]
+    }
+    return f
+})(this, ArrayBuffer);
+x + 1