Linus Torvalds writes: (Summary)
So if you write a test-case that tests that "system call number 345
returns -ENOSYS", and we add a new system call, and you say "hey, you
regressed my system call test", that's not a regression. So if it turns out (for example)
that Firefox had some really odd bug, and the intent was to do system
call 123, but a typo had caused it to do system call 345 instead, and
another bug meant that the end result worked fine as long as system
call 345 returned ENOSYS, then the addition of that system call
actually does turn into a regression.
actually does turn into a regression.
See?
actually does turn into a regression.
See?