Q64564: Internal Compiler Error: ‘@(#)regMD.c:1.100’ Line 929

Article: Q64564
Product(s): See article
Version(s): 6.00   | 6.00
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | buglist6.00 | mspl13_c
Last Modified: 31-AUG-1990

The code below, when compiled using Microsoft C 6.00, produces the
following error:

   foo.c(15) : fatal error C1001: Internal Compiler Error
               (compiler file '@(#)regMD.c:1.100', line 929)
               Contact Microsoft Product Support Services

Sample Code
-----------

// Compile using 'cl -Od':

#define Rev(x)  ( ( (x) >> 24 ) | \
                  ( ( (x) & 0xff0000 ) >> 8 ) | \
                  ( ( (x) & 0x00ff00 ) << 8 ) | \
                  ( (x) << 24) )

#define Get(x,y) \
    (((x) == 183) ? (y) : Rev(y))

void main (void)
{
   long l;
   long *pl;
   int Order;

   l = Get(Order,*pl);  // This line causes the error.
}

The workaround for this problem is to either compile using the "-qc"
option or to simplify the expression.

One way of simplifying the above nested macro expression is to call
each macro separately. For instance, the following is a feasible
workaround:

1. Redefine the Get macro as follows:

      #define Get(x,y,z) \
          ((((x) == 183) ? (y) : (z))

2. Then for every call to the Get macro, use the following two
   statements:

      temp = Rev(x);
      l = Get(Order,*pl,temp);

Microsoft has confirmed this to be a problem with the C Compiler
version 6.00. We are researching this problem and will post new
information here as it becomes available.

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1986-2002.