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Q67031: C1001: ‘@(#)regMD.c:1.100’, Line 3101

Article: Q67031
Product(s): See article
Version(s): 6.00 6.00a | 6.00 6.00a
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | buglist6.00 buglist6.00a | mspl13_c
Last Modified: 18-NOV-1990

The sample code below produces the following internal compiler errors
under different versions of the compiler when any of the following
individual optimizations are used:

   /Oa /Oc /Oi /On /Op /Or /Os /Ot /Ow /Oz

Internal Compiler Error Under C 6.00a
-------------------------------------

test.c(11) : fatal error C1001: Internal Compiler Error
                   (compiler file '@(#)regMD.c:1.100', line 3101)
                   Contact Microsoft Product Support Services

Internal Compiler Error Under C 6.00
------------------------------------

   test.c(11) : fatal error C1001: Internal Compiler Error
                      (compiler file '@(#)regMD.c:1.100', line 3074)
                      Contact Microsoft Product Support Services

The following are three possible workarounds:

1. Add one of the following optimizations:

      /Od /Oe /Og /Ol /Ox

2. Do not declare the structure variables of type register.

3. Use an if-else statement instead of the ternary operator.

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

1:  void main(void)
2:  {
3:     struct foo {
4:           int i;
5:     };
6:     int n;
7:
8:     register struct foo *moo, *goo;
9:
10:    moo=goo;
11:    n= moo->i ? moo->i :10000;
12: }

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