ID Number: Q61972
6.00 | 6.00
MS-DOS | OS/2
buglist6.00 fixlist6.00a
Summary:
The Microsoft C Compiler version 6.0 produces the following internal
compiler error when the sample program below is compiled for compact
(/AC) or large (/AL) memory model /Ole optimization:
file.c(24) : fatal error C1001: Internal Compiler Error
(compiler file '@(#)regMD.c:1.100', line 4634)
Contact Microsoft Product Support Services
Microsoft has confirmed this to be a problem in C version 6.0. This
problem was corrected in C version 6.0a.
The following workarounds will eliminate the error in C version 6.0:
1. Use the #pragma optimize("le", off) statement at the beginning of
the module to disable optimization and the #pragma optimize("", on)
statement after the module to reenable optimization.
-or-
2. Make "c" a pointer to a character. For example, instead of
char c;
use the following:
char *c = " ";
Also, change the assignment from
c = s1[j];
to the following:
c[0] = s1[j];
Sample Code
-----------
/* Compile options needed: /AL /Ole
*/
#include <stdio.h>
#include <malloc.h>
void main ()
{
char *s1,*s2;
int len;
char c;
int j;
s1 = malloc(sizeof(char *));
s2 = malloc(sizeof(char *));
s1 = "this is junk1";
s2 = "this is junk2";
len = 10;
for(j=0; j<len; j++){
c = s1[j];
s1[j]=s2[j];
s2[j] = c; // This line causes error
}
printf (" Done swapping memory ");
}