immutable string literal?

[Daniel Keep]

strtr wrote:
> On winXP (D1) I can compile/run this code without a problem.
> Not even a warning.
> 
> void main() {
>   char[] s= "immutable literal?";
>   s[$-1] = '!';
>   writefln(s);
> } 
> Codepad runs into a segmentation fault.
> http://codepad.org/NQfsRoR5
> 
> Why doesn't it result in a compiler error or warning?
> If it did I would have noticed this quirk earlier.

There's no compiler error because D1 doesn't have a const/immutable system.

There's no crash because Windows doesn't write-protect the data segment
which contains the literal.