Cryptic bug for DMD v2.087.x

[Petar]

On Wednesday, 14 August 2019 at 12:47:37 UTC, Peter Jacobs wrote:
>
> [..]
> The compiler should not be trying to execute an illegal 
> instruction, anyway, so that seems to be a good target for 
> dustmite's experiments.
> [..]

What actually happens is that the compiler has reached an 
assert(0) statement which on x86 is implemented as UD2 or HLT 
instruction as a efficient way to signal that an unreachable part 
of the program has been reached (likely as a result of an 
unhandled case).