1 files changed, 90 insertions, 0 deletions
diff --git a/js/src/tests/js1_5/Regress/regress-253150.js b/js/src/tests/js1_5/Regress/regress-253150.js
new file mode 100644
index 000000000..dc6a0de10
--- /dev/null
+++ b/js/src/tests/js1_5/Regress/regress-253150.js
@@ -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/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 253150;
+var summary = 'Do not warn on detecting properties';
+var actual = '';
+var expect = 'No warning';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+
+var testobject = {};
+
+options('strict');
+options('werror');
+
+try
+{
+  var testresult = testobject.foo;
+  actual = 'No warning';
+}
+catch(ex)
+{
+  actual = ex + '';
+}
+
+reportCompare(expect, actual, summary + ': 1');
+
+try
+{
+  if (testobject.foo)
+  {
+    ;
+  }
+  actual = 'No warning';
+}
+catch(ex)
+{
+  actual = ex + '';
+}
+
+reportCompare(expect, actual, summary + ': 2');
+
+try
+{
+  if (typeof testobject.foo == 'undefined')
+  {
+    ;
+  }
+  actual = 'No warning';
+}
+catch(ex)
+{
+  actual = ex + '';
+}
+
+reportCompare(expect, actual, summary + ': 3');
+
+try
+{
+  if (testobject.foo == null)
+  {
+    ;
+  }
+  actual = 'No warning';
+}
+catch(ex)
+{
+  actual = ex + '';
+}
+
+reportCompare(expect, actual, summary + ': 4');
+
+try
+{
+  if (testobject.foo == undefined)
+  {
+    ;
+  }
+  actual = 'No warning';
+}
+catch(ex)
+{
+  actual = ex + '';
+}
+
+reportCompare(expect, actual, summary + ': 3');