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duckerude | 10 months ago

It means that anything strange that happens next isn't a language bug.

Whether something is a bug or not is sometimes hard to pin down because there's no formal spec. Most of the time it's pretty clear though. Most software doesn't have a formal spec and manages to categorize bugs anyway.

discuss

NoTeslaThrow|10 months ago

> It means that anything strange that happens next isn't a language bug.

This is even more vague. The language is getting blamed regardless. This makes no sense.

dwattttt|10 months ago

No: the language defined that e.g. a NonZeroU8 can't contain 0, and the only way it could is via illegal means. You don't need a formal proof to describe that.

To try to characterise what any compiler, hypothetical or not, does if you nonetheless produce one (again, via means that aren't valid) isn't meaningful.