BUG: Referencing Different Type Libraries May Render an Executable Platform Dependent (281913)

MORE INFORMATION

Steps to Reproduce Behavior

1. Set up a Windows 2000-based computer and a Windows NT 4-based computer, both with the latest service packs. Also install Visual Basic and Visual C++ 6.0 with Service Pack 5 on both computers.
2. On the Windows 2000-based computer, copy-and-paste the following Interface Description Language (IDL) code into Notepad, and save it as lcase.idl. Compile it with MIDL.EXE, midl lcase.idl. The resulting type library is named lcase.tlb.

   [
     uuid(D618AA4D-814A-47a2-9AC1-DDE18EDF1C54),
     version(1.0),
     helpstring("Lower case test")
   ]
   library lcasetest
   {
       [
         dllname("kernel32.dll"),
         version(1.0),
         helpstring("Sleep function exported by kernel32.dll")
       ]
       module lcasetest {
           [
   			entry("Sleep"), 
   			helpstring("sleep - lcase test.")
   		]
           void _stdcall Sleep([in] long dwMS);
       };
   };
   					

3. As in step 1, build ucase.tlb with the following IDL code:

   [
     uuid(3F215C63-D0AD-4980-93F2-5DDF850061E4),
     version(1.0),
     helpstring("Upper case test")
   ]
   library ucasetest
   {
       [
         dllname("KERNEL32.DLL"),
         version(1.0),
         helpstring("Sleep function exported by kernel32.dll")
       ]
       module lcasetest {
           [
   			entry("Sleep"), 
   			helpstring("sleep - ucase test.")
   		]
           void _stdcall Sleep([in] long dwMS);
       };
   };
   					

4. Create a Visual Basic Standard EXE project. Form1 is created by default.
5. On the Project menu, click to select References. In the References dialog box, browse to lcase.tlb and ucase.tlb, select both libraries, and then click OK.
6. Add the following code to Form1:

   Private Sub Form_Load()
       lcasetest.Sleep 1
       ucasetest.Sleep 1
   End Sub
   					

7. On the File menu, click to Save the project, and then select Make Project1.exe to compile the project.
8. Run the executable, Project1.exe, and note that the form appears with no errors.
9. Copy Project1.exe to the Windows NT 4-based computer and run it. Note that an Access Violation occurs.
10. Copy and compile the same project on the Windows NT 4-based computer and run it on both the Windows NT 4- and Windows 2000-based computers. Note that it fails on the Windows 2000-based computer.