[Bug target/18566] Can vary constants (undefined fortran)

["Thomas dot Koenig at online dot de" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From Thomas dot Koenig at online dot de  2004-11-30 08:29 -------
(In reply to comment #3)
> This is a target problem, most likely what is happening is that the memory
where the variable is being 
> stored is not being marked as read only for the processor.

This appears to be the case for C, as well. "const" variables are not
put into read-only memory.

Here's a C equivalent.  It is invalid as well, but it would be
nice if this could segfault, as well.

$ cat const.c
const int answer=42;
$ cat const2.c
#include <stdio.h>

extern int answer;

int main()
{
  answer = 3;
  printf("%d\n", answer);
  return 0;
}
$ ia64-unknown-linux-gnu-gcc-4.0.0 const.c const2.c
$ ./a.out
3


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18566