On Monday, 17 December 2018 at 22:22:05 UTC, H. S. Teoh wrote:
A less likely possibility might be an optimizer bug -- do you get different results if you add / remove '-O' (and/or '-inline') from your dmd command-line? If some combination of -O and -inline (or their removal thereof) "fixes" the problem, it could be an optimizer bug. But those are rare, and usually only show up when you use an obscure D feature combined with another obscure corner case, in a way that people haven't thought of. My bet is still on a pointer bug somewhere in your code.
I played around with dmd commandline. It works with -O. Works with -O -inline. As soon as I add -boundscheck=off it breaks.
As I understand it, out of bounds access is UB. Which would fit my problems because they look like UB. But if I run without boundscheck=off, shouldn't I get a RangeError somewhere?
