Correct assignment of (technical) blame is an important engineering task, though. You sound to me like you are thinking that's some sort of wrong thing to do, b

Correct assignment of (technical) blame is an important engineering task, though. You sound to me like you are thinking that's some sort of wrong thing to do, but I would disagree. Identifying whether the bug is a defined (in C) behavior or the result of the compiler making a certain choice as the result of your code invoking undefined behavior is an important element of fixing the bug; if you don't know which is which you're operating under a critical handicap.