Instant replay: Debugging C and C++ programs with rr (Red Hat Developer)

Oh, it works relatively fine. It's not even KiCad (and now that I realize I implied that, I'm sorry). It's just that I seem to have an IT breaking aura. Also works on, for some inexplicable reason, bicycles. In theory I don't believe in things like that. In practice, it's so obvious...

Well, and a large part of it is because I moved it to the nightlies (5.99), though I did generate lots of bug reports when I used the stable, too. At this late point in the release cycle, and given how fast the amazing team fixes bugs, I'd say that's been a good deal even if I didn't want to put my talent into use by testing it :-)