proposed @noreturn attribute

[Stefan Koch via Digitalmars-d]

On Saturday, 8 July 2017 at 12:17:57 UTC, Andrei Alexandrescu 
wrote:
> On 7/8/17 6:15 AM, Walter Bright wrote:
>> Has anyone a better idea? Does anyone want to write a DIP for 
>> this?
>
> An attribute is fine. A more PL-minded possibility is to return 
> a specific type:
>
> struct None
> {
>     @disable this();
>     @disable this(this);
>     @disable @property None init();
> }
>
> None ThisFunctionExits();
>
> The compiler detects (without having anything hardwired about 
> the particular type "None") that the type None is impossible to 
> create and copy/move from a function, and therefore decrees the 
> function will never return.
>
>
> Andrei

... since it's going to be special cased by the compiler we might 
as well hardwire a type called none.
Although it seems to be that the scope of no-return is extremely 
narrow.
Because we do have precisely builtin assert(0).