2145953 - ODBC: login attempt on Windows crashes application - SDK for SAP ASE

• In some instances, application randomly crashes on call to establish connection to the ASE
• In reported instances the issue is sporadic, happening approximately one time per month

• Stack trace as shown (when using ASE ODBC Driver sybdrvodb.pdb file and application symbols):

  msvcr80.dll!_invalid_parameter(const wchar_t * pszExpression=0x0000000000000000, const wchar_t * pszFunction=0x000000001cf0fc00, const wchar_t * pszFile=0x0000000000000004, unsigned int nLine=0, unsigned __int64 pReserved=0) Line 88 C++
  msvcr80.dll!fwrite(const void * buffer=0x000000001cf0fc00, unsigned __int64 size=512, unsigned __int64 count=485555200, _iobuf * stream=0x0000000000000000) Line 77 C
  sybdrvodb64.dll!SybaseTds::Transport::Write(unsigned long value=16777216) Line 751 C++
  sybdrvodb64.dll!SybaseTds::Transport::WriteCaptureRecordHeader(SybaseTds::TdsConnection * conn=0x0000000001000000, unsigned char * inBuffer=0x0000000000000200, unsigned long captureType=1) Line 659 C++
  sybdrvodb64.dll!SybaseTds::TCPSocket::Send(SybaseTds::TdsBaseContext * pTdsBaseContext=0x000000001c6dc2b0, unsigned char * inBuffer=0x000000001c68e2f0, long length=1802857979, bool isPDU=true) Line 638 C++
  sybdrvodb64.dll!SybaseTds::SocketManager::SendRequest(SybaseTds::TdsBaseContext * pContext=0x000000001c68d870, SybaseTds::MTList * pBufferList=0xffffffffffffffff, bool addContextToQue=144) Line 172 C++
  sybdrvodb64.dll!SybaseTds::TdsDataOutputStream::Flush(bool addContextToQue=false) Line 110 C++
  sybdrvodb64.dll!SybaseTds::TdsContext::Send(bool addContextToQue=false) Line 341 C++
  sybdrvodb64.dll!SybaseTds::TdsConnection::TryLogin() Line 982 C++
  sybdrvodb64.dll!SybaseTds::TdsConnection::DoTryConnect(const SybaseTds::MTString & hostName={...}, const SybaseTds::MTString & portNumber={...}, bool RestoreSocket=false) Line 570 C++
  sybdrvodb64.dll!SybaseTds::TdsConnection::TryConnect(const SybaseTds::MTString & hostName={...}, const SybaseTds::MTString & portNumber={...}, bool RestoreSocket=8) Line 473 C++
  sybdrvodb64.dll!SybaseTds::HAContext::HandleFailOver() Line 240 C++
  sybdrvodb64.dll!SybaseTds::TdsConnection::Connect(SybaseTds::SynchronizedSybProperty * pProperties=0x000000001c68de30, BatchTimers * pBatchTimers=0x000000001a5480e0, SelectTimers * pSelectTimers=0x000000001d09df80) Line 379 C++
  sybdrvodb64.dll!SybaseOdbc::OdbcConnection::DriverConnect(HWND__ * WindowHandle=0x0000000000000000, wchar_t * InConnectionString=0x00000000002da960, short InStringLength=-22176, wchar_t * OutConnectionString=0x000000001b3ab6d0, short * OutStringLength=0x0000000000000000, short BufferLength=1024, unsigned short fDriverCompletion=0) Line 617 C++
  sybdrvodb64.dll!SQLDriverConnectW(void * ConnectionHandle=0x000007fefec6ac00, HWND__ * hWnd=0x00000000002daa40, wchar_t * InConnectionString=0x00000000002da960, short StringLength1=-1, wchar_t * OutConnectionString=0x000000001b3ab6d0, short BufferLength=1024, short * OutStringLength=0x0000000000000000, unsigned short fDriverCompletion=0) Line 989 C++
  odbc32.dll!SQLInternalDriverConnectW�() Unknown
  odbc32.dll!SQLDriverConnectW�() Unknown
  msdasql.dll!CODBCHandle::OHDriverConnect(class CHdbcNode *,void *,unsigned short const *,shor

• ASE 15.7
• ASE ODBC Driver 15.7 SP126 through 15.7 SP130
• Windows 2008 SP1 x64
• msdev 2012 (Visual Studio)
• App is MFC/ADO (C++)

Microsoft , KBA , BC-SYB-SDK , SDK , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem