Tricky DMD bug, but I have no idea how to report

[JN]

On Tuesday, 18 December 2018 at 22:56:19 UTC, H. S. Teoh wrote:
> Since no explicit slicing was done, there was no compiler error 
> / warning of any sort, and it wasn't obvious from the code what 
> had happened. By the time doSomething() was called, it was 
> already long past the source of the problem in buggyCode(), and 
> it was almost impossible to trace the problem back to its 
> source.
>
> Theoretically, -dip25 and -dip1000 are supposed to prevent this 
> sort of problem, but I don't know how fully-implemented they 
> are, whether they would catch the specific instance in your 
> code, or whether your code even compiles with these options.
>
>
> T

No luck. Actually, I avoid in my code pointers in general, I 
write my code very "Java-like" with objects everywhere etc. I 
gave up on the issue actually, perhaps I am encountering this bug 
https://issues.dlang.org/show_bug.cgi?id=16511 in my own code. 
Anyway, 32-bit and 64-bit debug work, so does LDC. That's good 
enough for me.