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Comment by quelsolaar

3 years ago

>I'm curious what you think of UB from a standard perspective

I think a lot about that! I'm a member of the UB study group and the lead author of a Technical Report we hope to release on UB.

In short, "Undefined behavior" is poorly named. It should have been called "Things compilers can assume the program wont do". With what we call "assumed absence of UB" compilers can and do do a lot of clever things.

Until we get the official TR out, you may find I made a video on the subject interesting:

https://www.youtube.com/watch?v=w3_e9vZj7D8

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