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+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>ArrayBuffer stream with large ArrayBuffer test</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+
+<script type="text/javascript">
+add_task(async function testLargeArrayBuffer() {
+  let ab = new ArrayBuffer(4.5 * 1024 * 1024 * 1024); // 4.5 GB.
+  let ta = new Uint8Array(ab);
+
+  const { Cc, Ci } = SpecialPowers;
+  let abis = Cc["@mozilla.org/io/arraybuffer-input-stream;1"]
+               .createInstance(Ci.nsIArrayBufferInputStream);
+
+  let sis = Cc["@mozilla.org/scriptableinputstream;1"]
+              .createInstance(Ci.nsIScriptableInputStream);
+  sis.init(abis);
+
+  // The stream currently doesn't support more than UINT32_MAX bytes.
+  let ex;
+  try {
+    abis.setData(ab, 0, ab.byteLength);
+  } catch (e) {
+    ex = e;
+  }
+  is(ex.message.includes("NS_ERROR_ILLEGAL_VALUE"), true, "Expecting exception");
+
+  // Reading a small slice of the large ArrayBuffer is fine, even near the end.
+  ta[ta.length - 10] = "a".charCodeAt(0);
+  ta[ta.length - 9] = "b".charCodeAt(0);
+  ta[ta.length - 8] = "c".charCodeAt(0);
+  abis.setData(ab, ab.byteLength - 10, 2);
+  is(sis.read(1), "a", "should read 'a' after init");
+  is(sis.read(1), "b", "should read 'b' after 'a'");
+  is(sis.read(1), "", "Should be done reading data");
+});
+</script>
+
+</head>
+<body>
+</body>
+</html>