2 ms·

I disagree that the second is more impactful, but that's because I work with oddball architectures where the UB actually crashes the program ;). I'm wondering

I disagree that the second is more impactful, but that's because I work with oddball architectures where the UB actually crashes the program ;). I'm wondering though, does UBSAN catch this?

saagarjha 7y ago
In my experience, yes, it’ll warn you if you access something aligned to the wrong boundary.
pron 7y ago
If gcc crashed the program, then that would have been the headline. It's more interesting to know the actual behavior a popular compiler exhibits for a given UB, especially if it's a potentially harmful one, than the mere fact that something is a UB (which you can also just see in the standard).