[moyix]

Yeah, unfortunately I have no idea if that was their original goal (which seems unlikely?) or if this is just a minimal example they came up with after tripping over the actual problem in a more realistic setting.

I think it suffices to show that the behavior of FTZ/DAZ caused an actual problem for someone, though. I agree that the vast majority of numerical code won't care about FTZ/DAZ, but when it's enabled thread-wide you have no idea what kind of code you'll end up affecting.