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

[Vladimir Panteleev]

On Monday, 17 December 2018 at 21:59:59 UTC, JN wrote:
> while working on my game engine project, I encountered a DMD 
> codegen bug. It occurs only when compiling in release mode, 
> debug works.

Old thread, but FWIW, such bugs can be easily and precisely 
reduced with DustMite. In your test script, just compile with and 
without the compiler option which causes the bug to manifest, and 
check that one works and the other doesn't.

I put together a short article on the DustMite wiki describing 
how to do this:
https://github.com/CyberShadow/DustMite/wiki/Reducing-a-bug-with-a-specific-compiler-option