Why implicit conversion of string literal to char[] does not works?

[Michal Minich]

On Tuesday, 2 July 2013 at 14:26:54 UTC, Jesse Phillips wrote:
> On Tuesday, 2 July 2013 at 13:51:15 UTC, Michal Minich wrote:
>> As this cast (on linux), will _allways_ result in undefined 
>> behavior. It is something compiler can  easily tell, and 
>> advice "use .dup instead of cast..."
>
> Casting away const/immutable is not undefined, modifying 
> const/immutable data is. Since you cast away immutable the 
> compiler can no longer prevent you from making such 
> modifications.

You are right, the cast itself will not result in undefined 
behavior. But it might give you value on which any write 
operation will. So why not warn  programer of such behavior when 
we can know it statically.