Weird bugs in DMD 2.81.0

[solidstate1991]

On Saturday, 14 July 2018 at 07:01:59 UTC, Seb wrote:
> Any chance you can make a minimal, reproducible example of this?
> Would be great because then it can be put on bugzilla and other 
> people can have a look at it too.

I might try, but first I'll look at the functions to see if I can 
fix some of it by myself, fixing pointer overflows. I suspect 
that the drawing functions overflow due to small typos, once I 
mixed up the x and y coordinates of something then it resulted in 
a corrupted image.