Registrations are now open. Join us today!
There is still a lot of work to do on the wiki yet! More information about editing can be found here.
Already have an account?

Microsoft KB Archive/172992

From BetaArchive Wiki

Article ID: 172992

Article Last Modified on 7/5/2005


  • Microsoft Visual C++ 5.0 Enterprise Edition
  • Microsoft Visual C++ 5.0 Professional Edition

This article was previously published under Q172992


Compiling code similar to the code in the sample below may cause the following error to be generated:

fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'E:\utc\src\\P2\main.c', line 379)


One way to work around the C1001 error is to correct the apparent programming error in the sample code below. Notice the check of p==0 in the if statement. The code that follows will cause an access violation if executed. Changing the check to p!=0 will cause the compiler to not generate the C1001 error and allow the code to compile. Another workaround that preserves the apparently incorrect algorithm is to introduce a local integer that holds the result of the comparison of p to zero. Use this local integer in the if statement instead of the actual comparison.


Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been fixed in Visual Studio 97 Service Pack 3.

For additional information about the Visual Studio 97 Service Pack 3, please see the following article in the Microsoft Knowledge Base:

170365 INFO: Visual Studio 97 Service Packs - What, Where, and Why



   // compile options: /Og /c
   int f( int * p )
      int i = 1;
      // int i2 = (p==0); // uncomment these 2 lines and
      // if( i2 )         // 
      if( p == 0 )        // comment this one for workaround
         while( i && *p != 0 )
            i = *p++ == 3;
      return i;

Additional query words: ICE

Keywords: kberrmsg kbbug kbfix kbvs97sp2fix kbcompiler KB172992