diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_3/RegExp/15.10.4.1-5-n.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_3/RegExp/15.10.4.1-5-n.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,105 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ *
+ * Date: 26 November 2000
+ *
+ *
+ *SUMMARY: Passing a RegExp object to a RegExp() constructor.
+ *This test arose from Bugzilla bug 61266. The ECMA3 section is:      
+ *
+ *  15.10.4.1 new RegExp(pattern, flags)
+ *
+ *  If pattern is an object R whose [[Class]] property is "RegExp" and
+ *  flags is undefined, then let P be the pattern used to construct R
+ *  and let F be the flags used to construct R. If pattern is an object R
+ *  whose [[Class]] property is "RegExp" and flags is not undefined,
+ *  then throw a TypeError exception. Otherwise, let P be the empty string 
+ *  if pattern is undefined and ToString(pattern) otherwise, and let F be
+ *  the empty string if flags is undefined and ToString(flags) otherwise.
+ *
+ *
+ *The current test will check the second scenario outlined above:
+ *
+ *   "pattern" is itself a RegExp object R
+ *   "flags" is NOT undefined
+ *
+ * This should throw an exception ... we test for this.
+ *
+ */
+
+//-------------------------------------------------------------------------------------------------
+var BUGNUMBER = '61266';
+var summary = 'Negative test: Passing (RegExp object, flag) to RegExp() constructor';
+var statprefix = 'Passing RegExp object on pattern ';
+var statsuffix =  '; passing flag ';
+var cnFAILURE = 'Expected an exception to be thrown, but none was -';
+var singlequote = "'";
+var i = -1; var j = -1; var s = ''; var f = '';
+var obj1 = {}; var obj2 = {};
+var patterns = new Array();
+var flags = new Array(); 
+
+
+// various regular expressions to try -
+patterns[0] = '';
+patterns[1] = 'abc';
+patterns[2] = '(.*)(3-1)\s\w';
+patterns[3] = '(.*)(...)\\s\\w';
+patterns[4] = '[^A-Za-z0-9_]';
+patterns[5] = '[^\f\n\r\t\v](123.5)([4 - 8]$)';
+
+// various flags to try -
+flags[0] = 'i';
+flags[1] = 'g';
+flags[2] = 'm';
+
+
+DESCRIPTION = "Negative test: Passing (RegExp object, flag) to RegExp() constructor"
+  EXPECTED = "error";
+
+
+//-------------------------------------------------------------------------------------------------
+test();
+//-------------------------------------------------------------------------------------------------
+
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  for (i in patterns)
+  {
+    s = patterns[i];
+
+    for (j in flags)
+    {
+      f = flags[j];
+      printStatus(getStatus(s, f));
+      obj1 = new RegExp(s, f);  
+      obj2 = new RegExp(obj1, f);   // this should cause an exception
+
+      // WE SHOULD NEVER REACH THIS POINT -
+      reportCompare('PASS', 'FAIL', cnFAILURE);
+    }
+  }
+
+  exitFunc ('test');
+}
+
+
+function getStatus(regexp, flag)
+{
+  return (statprefix  +  quote(regexp) +  statsuffix  +   flag);
+}
+
+
+function quote(text)
+{
+  return (singlequote  +  text  + singlequote);
+}