diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/extensions/regress-564577.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/extensions/regress-564577.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,91 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ * Contributor: Matthew Draper <matthew@trebex.net>
+ */
+
+var gTestfile = 'regress-564577.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 564577;
+var summary = '__noSuchMethod__ when property exists';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+ 
+  var o = {
+    aaa: undefined,
+    bbb: null,
+    ccc: 77,
+    ddd: 'foo',
+    eee: {},
+    fff: /./,
+    __noSuchMethod__: function (id, args)
+    {
+      return(id + '('+args.join(',')+') ' + this[id]);
+    }
+  };
+
+  status = summary + ' ' + inSection(1) + ' ';
+  actual = o.aaa();
+  expect = 'aaa() undefined';
+  reportCompare(expect, actual, status);
+
+  status = summary + ' ' + inSection(2) + ' ';
+  try {
+    actual = o.bbb();
+  } catch(e) {
+    actual = e + '';
+  }
+  expect = 'TypeError: o.bbb is not a function';
+  reportCompare(expect, actual, status);
+
+  status = summary + ' ' + inSection(3) + ' ';
+  try {
+    actual = o.ccc();
+  } catch(e) {
+    actual = e + '';
+  }
+  expect = 'TypeError: o.ccc is not a function';
+  reportCompare(expect, actual, status);
+
+  status = summary + ' ' + inSection(4) + ' ';
+  try {
+    actual = o.ddd();
+  } catch(e) {
+    actual = e + '';
+  }
+  expect = 'TypeError: o.ddd is not a function';
+  reportCompare(expect, actual, status);
+
+  status = summary + ' ' + inSection(5) + ' ';
+  try {
+    actual = o.eee();
+  } catch(e) {
+    actual = e + '';
+  }
+  expect = 'TypeError: o.eee is not a function';
+  reportCompare(expect, actual, status);
+
+  status = summary + ' ' + inSection(6) + ' ';
+  try {
+    actual = o.fff('xyz') + '';
+  } catch(e) {
+    actual = e + '';
+  }
+  expect = 'TypeError: o.fff is not a function';
+  reportCompare(expect, actual, status);
+
+  exitFunc('test');
+}