Proper way to exit with specific exit code?

[mw]

On Sunday, 13 November 2022 at 22:17:32 UTC, mw wrote:
> On Sunday, 13 November 2022 at 22:06:09 UTC, Imperatorn wrote:
>> On Sunday, 13 November 2022 at 21:37:47 UTC, mw wrote:
>>> On Sunday, 13 November 2022 at 21:16:32 UTC, mw wrote:
>>>
>>>> I even tried core.stdc.stdlib.exit(-1), it does not work.
>>>
>>> Tried
>>> ```
>>> import core.runtime;
>>>    Runtime.terminate();
>>>    core.stdc.stdlib.exit(-1);
>>> ```
>>>
>>> Still does not work.
>>
>> I have no idea why it would fail. What about assert(0)?
>
>
> I guess these two calls somehow only terminate the calling 
> thread (? this is strange for core.stdc.stdlib.exit), the whole 
> program just hangs after the call, and can only be terminated 
> by `kill -9`.
>
>
> I have to manually go thru each of the treads and plug in some 
> kind of early exit logic to stop the whole program.
>
>
> Will try assert(0) later.

tried:

```
     core.runtime.Runtime.terminate();
     core.stdc.stdlib.exit(-1);
     assert(0);
     enforce(false);
```

Still not working, not even "Ctrl+C", have to `kill -9` to 
terminate it.