cons int manipulation

[rahulsinner@gmail.com]

Hi,

Consider the following.

#include <stdio.h>

int main()
{
const int i=10;
int *ptr=&i;
*ptr=20;
return 0;
}

This code compiles with a "suspicious pointer conversion" warning and
thus, is able to voilate the integrity of constants.
What does the standard say about it?

Rahul

[Chris Dollin]

Re: cons int manipulation

rahulsinner@gma il.com wrote:
[color=blue]
> Hi,
>
> Consider the following.
>
> #include <stdio.h>
>
> int main()
> {
> const int i=10;
> int *ptr=&i;
> *ptr=20;
> return 0;
> }
>
> This code compiles with a "suspicious pointer conversion" warning and
> thus, is able to voilate the integrity of constants.
> What does the standard say about it?[/color]

I expect it says that it's a constraint violation and that a diagnostic
must be issued - which it was.

Perhaps your compiler has knobs that will make warnings into don't-produce-
object-code errors. Turn them up.

--
Chris "1680x1050" Dollin
"Reaching out for mirrors hidden in the web."