FIX: GPF on Session Expiration Using Active Server Pages

CAUSE

This error is caused by a reference counting problem in Active Server Pages (ASP, which can occur if you attempt store an array containing objects in a Session variable. Consider the code example below:

   dim Arr(1)
   Arr(0) = Server.CreateObject("MyProgID.MyClassId")
   Session("MyVar") = Arr
				

When the session ends, or is terminated by an Internet Information Server shutdown, the object pointer is released. In addition, VariantClear() is called on the Variant containing the array "Arr". This results in a second attempt to release the object pointer stored in "Arr", and thus a GPF.

   <HTML>
   <HEAD><TITLE>Document Title</TITLE></HEAD>
   <BODY>
   <%
   Dim MyArray(2)
   Set MyArray(1) = Server.CreateObject("ADODB.Connection")
   Set MyArray(2) = Server.CreateObject("ADODB.Connection")
   Session("SessionAry") = MyArray
   %>
   </BODY>
   </HTML>