diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testBug761439.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testBug761439.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,5 @@
+var b = new ArrayBuffer(4);
+var dv = new DataView(b);
+dv.setInt32(0, 42);
+var w = wrap(dv);
+assertEq(DataView.prototype.getInt32.call(w, 0), 42);