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Q63060: Internal Compiler Error: ‘@(#)newcode.c:1.87’, Line 604

Article: Q63060
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: 25-JUL-1990

The code example shown below generates the following error message:

   fatal error C1001: Internal Compiler Error
         (compiler file '@(#)newcode.c:1.87', line 604)
         Contact Microsoft Product Support Services

Code Example
------------

#define OFFSET 2
#define NEXTFP(nextfp,fp) \
     nextfp = (long) fp & 0xffff0000;\
     nextfp = nextfp + * fp + *(fp+1) * 0x100;

static unsigned char * stk_bottom;
static long first_fp;

void main (void)
{}

void chkstkinit()
{
   unsigned char stk_top;
   static long nextfp;
   static unsigned char *fp;

   stk_top = 0xaa;
   fp = &stk_top + OFFSET;
   NEXTFP(nextfp, fp);
   stk_bottom = (unsigned char *)nextfp;   // The error occurs here
   first_fp = *stk_bottom + *(stk_bottom +1) * 0x100;

   return;
}

This error was only observed in the large (/AL) or huge (/AH) memory
model. Compiling using the /Od option or the #pragma optimize("",off)
statement eliminates the error.

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

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