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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=535043
+-->
+<head>
+  <title>Test for Bug 535043</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=535043">Mozilla Bug 535043</a>
+<p id="display"></p>
+<div id="content">
+  <textarea></textarea>
+  <textarea maxlength="-1"></textarea>
+  <textarea maxlength="0"></textarea>
+  <textarea maxlength="2"></textarea>
+</div>
+<pre id="test">
+<script type="text/javascript">
+
+/** Test for Bug 535043 **/
+function checkTextArea(textArea) {
+  textArea.value = '';
+  textArea.focus();
+  for (var j = 0; j < 3; j++) {
+    synthesizeKey('x', {});
+  }
+  var htmlMaxLength = textArea.getAttribute('maxlength');
+  var domMaxLength = textArea.maxLength;
+  if (htmlMaxLength == null) {
+    is(domMaxLength, -1,
+      'maxlength is unset but maxLength DOM attribute is not -1');
+  } else if (htmlMaxLength < 0) {
+    // Per the HTML5 spec, out-of-range values are supposed to translate to -1,
+    // not 0, but they don't?
+    is(domMaxLength, -1,
+      'maxlength is out of range but maxLength DOM attribute is not -1');
+  } else {
+    is(domMaxLength, parseInt(htmlMaxLength),
+      'maxlength in DOM does not match provided value');
+  }
+  if (textArea.maxLength == -1) {
+    is(textArea.value.length, 3,
+      'textarea with maxLength -1 should have no length limit');
+  } else {
+    is(textArea.value.length, textArea.maxLength, 'textarea has maxLength ' +
+      textArea.maxLength + ' but length ' + textArea.value.length );
+  }
+}
+
+SimpleTest.waitForFocus(function() {
+  var textAreas = document.getElementsByTagName('textarea');
+  for (var i = 0; i < textAreas.length; i++) {
+    checkTextArea(textAreas[i]);
+  }
+
+  textArea = textAreas[0];
+  testNums = [-42, -1, 0, 2];
+  for (var i = 0; i < testNums.length; i++) {
+    textArea.removeAttribute('maxlength');
+
+    var caught = false;
+    try {
+      textArea.maxLength = testNums[i];
+    } catch (e) {
+      caught = true;
+    }
+    if (testNums[i] < 0) {
+      ok(caught, 'Setting negative maxLength should throw exception');
+    } else {
+      ok(!caught, 'Setting nonnegative maxLength should not throw exception');
+    }
+    checkTextArea(textArea);
+
+    textArea.setAttribute('maxlength', testNums[i]);
+    checkTextArea(textArea);
+  }
+
+  SimpleTest.finish();
+});
+
+SimpleTest.waitForExplicitFinish();
+
+</script>
+</pre>
+</body>
+</html>