diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testNeutering.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testNeutering.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+for (var variant of ["same-data", "change-data"]) {
+  var ab = new ArrayBuffer(4);
+  var i32 = new Int32Array(ab);
+  i32[0] = 42;
+  neuter(ab, variant);
+  assertEq(i32.length, 0);
+  assertEq(ab.byteLength, 0);
+  assertEq(i32[0], undefined);
+
+  var ab = new ArrayBuffer(12);
+  var i32 = new Int32Array(ab);
+  i32[0] = 42;
+  neuter(ab, variant);
+  assertEq(i32.length, 0);
+  assertEq(ab.byteLength, 0);
+  assertEq(i32[0], undefined);
+
+  var ab = new ArrayBuffer(4096);
+  var i32 = new Int32Array(ab);
+  i32[0] = 42;
+  neuter(ab, variant);
+  assertEq(i32.length, 0);
+  assertEq(ab.byteLength, 0);
+  assertEq(i32[0], undefined);
+}