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2167035 - ADO.NET: SELECT int crashes with "Object reference not set to an instance of an object" error if number´s last byte ends in A7 or A8 - SAP SDK


  • SAP ADO.NET crashes if issuing a "SELECT" clause with decimal number which corresponding hex ends in "A7" or "A8". Example: SELECT C1= 50587560
  • SELECT C1= 50587560 crashes with following stack trace:

System.Threading.ThreadHelper.ThreadStart()</StackTrace><ExceptionString>System.NullReferenceException: Object reference not set to an instance of an object.
at Sybase.Data.AseClient.AseDataReader.ReadAltFormat()
at Sybase.Data.AseClient.AseDataReader.Perform_RetrieveHasNextRow()
at Sybase.Data.AseClient.AseDataReader.Perform_Next()
at Sybase.Data.AseClient.AseDataReader.Read()
at TesteAseCliente.Form1.Button1_Click(Object sender, EventArgs e) in C:\tmp\TesteAseCliente\TesteAseCliente\TesteAseCliente\Form1.vb:line 132 



  • Adaptive Server Enterprise ADO.NET Data Provider 15.7 with builds SP133 or above
  • SAP Adaptive Server Enterprise (ASE) 15.5/15.7
  • Microsoft Visual Studio 2010/2012


SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; SAP Adaptive Server Enterprise SDK 16.0 ; Sybase SDK 15.7 ; Sybase Software Developer Kit 15.7


object,not,referece,null,ADO.NET,ADO,NET,.NET,ReadAltFormat,Perform_RetrieveHasNextRow,Perform_Next,set,crash,exception,error,system,threading,NullReferenceException,select,integer, CR#783799, CR783799, 783799 , KBA , BC-SYB-SDK , SDK , Bug Filed

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