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diff --git a/js/src/tests/js1_5/Array/regress-154338.js b/js/src/tests/js1_5/Array/regress-154338.js
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@@ -0,0 +1,90 @@
+/* -*- 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:    26 June 2002
+ * SUMMARY: Testing array.join() when separator is a variable, not a literal
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=154338
+ *
+ */
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = 154338;
+var summary = 'Test array.join() when separator is a variable, not a literal';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+
+
+/*
+ * Note that x === 'H' and y === 'ome'.
+ *
+ * Yet for some reason, using |x| or |y| as the separator
+ * in arr.join() was causing out-of-memory errors, whereas
+ * using the literals 'H', 'ome' was not -
+ *
+ */
+var x = 'Home'[0];
+var y = ('Home'.split('H'))[1];
+
+
+status = inSection(1);
+var arr = Array('a', 'b');
+actual = arr.join('H');
+expect = 'aHb';
+addThis();
+
+status = inSection(2);
+arr = Array('a', 'b');
+actual = arr.join(x);
+expect = 'aHb';
+addThis();
+
+status = inSection(3);
+arr = Array('a', 'b');
+actual = arr.join('ome');
+expect = 'aomeb';
+addThis();
+
+status = inSection(4);
+arr = Array('a', 'b');
+actual = arr.join(y);
+expect = 'aomeb';
+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');
+}