all OS functions should be "nothrow @trusted @nogc"

[Timon Gehr via Digitalmars-d]

On 26.07.2017 02:45, Timon Gehr would have liked to have written:
> ...
> What Moritz is saying is that the following implementation of fclose is 
> correct according to the C standard:
> 
> int fclose(FILE *stream){
>      if(stream == NULL){
>          return go_wild_and_corrupt_all_the_memory();
>      }else{
>          return actually_close_the_file(stream);
>      }
> }

(Forgot the returns.)