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
