Q40499: Internal Compiler Error: regMD.c 1.117 Line 292

Article: Q40499
Product(s): See article
Version(s): 5.10   | 5.10
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | buglist5.10 | mspl13_c
Last Modified: 14-JUL-1989

The following error is produced when the code sample below is compiled
in either the large- or compact-memory models (/AL and /AC):

       fatal error C1001: Internal Compiler Error
        (compiler file '@(#)regMD.c:1.117', line 292)
        Contact Microsoft Technical Support

The memory models small, medium, and huge do not generate this error.
This error is produced with optimizations disabled as well as with the
default optimizations. The error occurs on the following line:

   temp_sub[x + 1] = Themain.sub[x];

The workaround to this problem is to declare a temporary structure to
serve as an intermediate storage place for this assignment as follows:

   temp = Themain.sub[x] ;
   temp_sub[x+1] = temp ;

Microsoft has confirmed this to be a problem with Version 5.10 of the
C compiler. We are researching this problem and will post new
information as it becomes available.

The code below produces the offending internal compiler error. The
workaround has been noted and commented out.

The following is a code example:

struct   main_def
 {
   struct   sub_def
    {
      int      max_width;
      long     start_byte, end_byte;
    } *sub;

 } Themain;

static int test (int x)
{
   struct sub_def *temp_sub, temp ;

   /*                           To workaround the error, replace
   temp = Themain.sub[x] ;      the assignment below with these two.
   temp_sub[x+1] = temp ;
   */

   temp_sub[x + 1] = Themain.sub[x];  /* Error occurs on this line. */
}

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