Unexplainable behaviour with direct struct assignment.

[HuskyNator]

On Wednesday, 18 May 2022 at 20:16:51 UTC, Dennis wrote:
> On Wednesday, 18 May 2022 at 20:05:05 UTC, HuskyNator wrote:
>> This will print:
>> ```
>> 0
>> 50
>> nan
>> ```
>
> Which compiler and flags are you using? For me it just prints 
> 50, you might be stumbling on some (old) bugs in the DMD 
> backend with floating point registers. Examples of such bugs 
> are:
>
> https://issues.dlang.org/show_bug.cgi?id=18573
> https://issues.dlang.org/show_bug.cgi?id=22163

I've been using `DMD 2.098.0` using a default DUB (1.27.0) init 
project (I'm not quite sure what the compile flags are).

After updating to `DMD 2.100.0` & `DUB 1.29.0`, I still get this 
behavior.
Only when I use `dub run --b=debug` however (default for me). 
`dub run --b=release` does return what one would expect.