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diff --git a/js/src/tests/js1_5/Regress/regress-57043.js b/js/src/tests/js1_5/Regress/regress-57043.js
new file mode 100644
index 000000000..ad1a3cd61
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+++ b/js/src/tests/js1_5/Regress/regress-57043.js
@@ -0,0 +1,79 @@
+/* -*- 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: 03 December 2000
+ *
+ *
+ * SUMMARY:  This test arose from Bugzilla bug 57043:
+ * "Negative integers as object properties: strange behavior!"
+ *
+ * We check that object properties may be indexed by signed
+ * numeric literals, as in assignments like obj[-1] = 'Hello' 
+ *
+ * NOTE: it should not matter whether we provide the literal with
+ * quotes around it or not; e.g. these should be equivalent:
+ *
+ *                                    obj[-1]  = 'Hello'
+ *                                    obj['-1']  = 'Hello'
+ */
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 57043;
+var summary = 'Indexing object properties by signed numerical literals -'
+  var statprefix = 'Adding a property to test object with an index of ';
+var statsuffix =  ', testing it now -';
+var propprefix = 'This is property ';
+var obj = new Object();
+var status = ''; var actual = ''; var expect = ''; var value = '';
+
+
+//  various indices to try -
+var index =
+  [-1073741825, -1073741824, -1073741823, -5000, -507, -3, -2, -1, -0, 0, 1, 2, 3, 1073741823, 1073741824, 1073741825];
+
+
+//------------------------------------------------------------------------------------------------- 
+test();
+//-------------------------------------------------------------------------------------------------
+
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  for (var j in index) {testProperty(index[j]);}
+
+  exitFunc ('test');
+}
+
+
+function testProperty(i)
+{
+  status = getStatus(i);
+
+  // try to assign a property using the given index -
+  obj[i] = value = (propprefix  +  i);  
+ 
+  // try to read the property back via the index (as number) -
+  expect = value;
+  actual = obj[i];
+  reportCompare(expect, actual, status); 
+
+  // try to read the property back via the index as string -
+  expect = value;
+  actual = obj[String(i)];
+  reportCompare(expect, actual, status);
+}
+
+function positive(n) { return 1 / n > 0; }
+
+function getStatus(i)
+{
+  return statprefix +
+         (positive(i) ? i : "-" + -i) +
+         statsuffix;
+}