Bug in generator

[ag0aep6g via Digitalmars-d-learn]

On 01/30/2017 11:58 AM, Profile Anaysis wrote:
> the code from https://dlang.org/library/std/concurrency/generator.html
>
> gives a seg fault at the end.
>
> import std.concurrency;
> import std.stdio;
>
>
> void main()
> {
>     auto tid = spawn(
>     {
>         while (true)
>         {
>             writeln(receiveOnly!int());
>         }
>     });
>
>     auto r = new Generator!int(
>     {
>         foreach (i; 1 .. 10)
>             yield(i);
>     });
>
>     foreach (e; r)
>     {
>         tid.send(e);
>     }
> }
[...]

I don't see a segfault, but an exception: 
"std.concurrency.OwnerTerminated at std/concurrency.d(241): Owner terminated".

Which makes sense because the spawned thread still tries to receive ints 
after the main thread has finished. So, the example is bad and should be 
fixed. I've filed an issue:

https://issues.dlang.org/show_bug.cgi?id=17127