Reports 'fall-through' in a switch statement. Fall-through is defined to occur when a series of executable statements after a switch label is not guaranteed to transfer control before the next switch label. In that case, control falls through to the statements after that switch label, even though the switch expression does not equal the value of the fallen-through label. While occasionally intended, this construction is confusing, and is often the result of a typo.

This inspection ignores any fall-through commented with a text matching the regex pattern (?i)falls?\s*thro?u.