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diff --git a/js/src/tests/js1_5/Object/regress-192105.js b/js/src/tests/js1_5/Object/regress-192105.js
new file mode 100644
index 000000000..3673b256d
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+++ b/js/src/tests/js1_5/Object/regress-192105.js
@@ -0,0 +1,149 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* 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:    06 February 2003
+ * SUMMARY: Using |instanceof| to check if function is called as a constructor
+ *
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=192105
+ *
+ */
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = 192105;
+var summary = 'Using |instanceof| to check if f() is called as constructor';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+
+
+/*
+ * This function is the heart of the test. It sets the result
+ * variable |actual|, which we will compare against |expect|.
+ *
+ * Note |actual| will be set to |true| or |false| according
+ * to whether or not this function is called as a constructor;
+ * i.e. whether it is called via the |new| keyword or not -
+ */
+function f()
+{
+  actual = (this instanceof f);
+}
+
+
+/*
+ * Call f as a constructor from global scope
+ */
+status = inSection(1);
+new f(); // sets |actual|
+expect = true;
+addThis();
+
+/*
+ * Now, not as a constructor
+ */
+status = inSection(2);
+f(); // sets |actual|
+expect = false;
+addThis();
+
+
+/*
+ * Call f as a constructor from function scope
+ */
+function F()
+{
+  new f();
+}
+status = inSection(3);
+F(); // sets |actual|
+expect = true;
+addThis();
+
+/*
+ * Now, not as a constructor
+ */
+function G()
+{
+  f();
+}
+status = inSection(4);
+G(); // sets |actual|
+expect = false;
+addThis();
+
+
+/*
+ * Now make F() and G() methods of an object
+ */
+var obj = {F:F, G:G};
+status = inSection(5);
+obj.F(); // sets |actual|
+expect = true;
+addThis();
+
+status = inSection(6);
+obj.G(); // sets |actual|
+expect = false;
+addThis();
+
+
+/*
+ * Now call F() and G() from yet other functions, and use eval()
+ */
+function A()
+{
+  eval('F();');
+}
+status = inSection(7);
+A(); // sets |actual|
+expect = true;
+addThis();
+
+
+function B()
+{
+  eval('G();');
+}
+status = inSection(8);
+B(); // sets |actual|
+expect = false;
+addThis();
+
+
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+function addThis()
+{
+  statusitems[UBound] = status;
+  actualvalues[UBound] = actual;
+  expectedvalues[UBound] = expect;
+  UBound++;
+}
+
+
+function test()
+{
+  enterFunc('test');
+  printBugNumber(BUGNUMBER);
+  printStatus(summary);
+
+  for (var i=0; i<UBound; i++)
+  {
+    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
+  }
+
+  exitFunc ('test');
+}