PRB: Stream Size May Vary Depending on Where It Is Loaded From (304964)

MORE INFORMATION

Steps to Reproduce Behavior

1. Create an empty Win32 console application.
2. Add a new .cpp file to the project and paste the following code:

   #include <stdio.h>
   #import "c:\program files\common files\system\ado\msado15.dll" no_namespace rename("EOF", "ADOEOF")
   
   void main(int argc, char* argv[])
   {
   
           _StreamPtr m_pStream1, m_pStream2;
           int nSize1, nSize2;
   	
           // File size3.txt has 3 characters.
           WCHAR m_strmSource2[1024]=L"URL=http://adotest/size3.txt";
           WCHAR m_strmSource1[1024]=L"\\\\adotest\\size3.txt";
   	
           HRESULT hr = S_OK; 
           try{
   
                   CoInitialize(NULL);
                   _variant_t vSource;
                   VariantInit(&vSource);
                   vSource.vt = VT_ERROR;
                   hr = m_pStream1.CreateInstance(__uuidof(Stream));
                   hr = m_pStream2.CreateInstance(__uuidof(Stream));
                   hr = m_pStream1->Open(vSource,adModeUnknown,adOpenStreamUnspecified,L"",L"");
   
                   m_pStream1->LoadFromFile(m_strmSource1);
                   nSize1 = m_pStream1->Size; // 5 is returned, which is 3 + 2 (2 bytes for type encoding).
                   hr = m_pStream2->Open(m_strmSource2,adModeUnknown,adOpenStreamUnspecified,L"",L"");
                   nSize2 = m_pStream2->Size; // 3 is returned, which is expected.		
   
                   printf("SIZE: Opening Stream from file returned: %d\n",nSize1);
                   printf("SIZE: Opening Stream from URL returned: %d",nSize2);
   
                   hr = m_pStream1->Close();
                   hr = m_pStream2->Close();
   
                   CoUninitialize();
           }
           catch (_com_error &err){
                   _bstr_t bstrSource(err.Source());
                   _bstr_t bstrDescription(err.Description());
      		
                   // Print Com errors.
                   printf("Error\n");
                   printf("\tCode = %08lx\n", err.Error());
                   printf("\tCode meaning = %s\n", err.ErrorMessage());
                   printf("\tSource = %s\n", (LPCSTR) bstrSource);
                   printf("\tDescription = %s\n", (LPCSTR) bstrDescription);
      
           }
   }
   					

3. Build and then run the application to check the size difference.