BUG: Internal Compiler Error, C1001, MSC2.CPP, line 1011

• The Microsoft C/C++ Compiler (CL.EXE),
  • Microsoft Visual C++ for Windows, 16-bit edition, versions 1.5, 1.51, 1.52

SYMPTOMS

When using the /Ol switch (enable loop optimizations) and compiling a module that contains several large loops, or that contains several layers of nested loops, version 8.0c of the Microsoft C/C++ compiler may generate the following error message:

   file.c(xxx) : fatal error C1001: internal compiler error
               (compiler file 'msc2.cpp', line 1011) 

RESOLUTION

There are two workarounds for this error message:

1. Compile using the fast compiler. Use of the fast compiler can be forced by using the /f compiler switch.


-or-


2. Do not compile with loop optimizations enabled. This can be done either at the module level by removing the /Ol option from the compiler command line, or at the function level by using #pragma optimize directives. The syntax of the #pragma optimize directive is as follows:

   
          #pragma optimize( "l", off ) // Disable loop optimizations
          // Function that contains the code causing the problem.
          // This can be determined by the line number given in the
          // C1001 error message.
   
          #pragma optimize( "l", on ) // Enable loop optimizations 

STATUS

Microsoft has confirmed this to be a problem with the C/C++ compiler version 8.0c. We are researching the problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: 1.50 8.00c

Keywords          : kb16bitonly 
Version           : 
Platform          : 
Issue type        : 

Last Reviewed: July 21, 1999