[ 2021-06-20; Daniel comments ]

An informal editorial change suggestion has recently been made whose editorial implementation would promote the idea that the default assumption is that Postconditions: are only met if the function doesn't exit with an exception.

After analyzing all current existing Postconditions: elements the following seems to hold: Affected by this issue are only non-noexcept functions and mostly non-constructor functions (unless the Postconditions: element says something about the value of its arguments). Most existing Postconditions seem to be intended to apply only in non-exceptional cases. I found some where this is presumably not intended, namely those of the expressions os << x and is >> v in Tables [tab:rand.req.eng] and [tab:rand.req.dist], maybe also [time.zone.db.remote] p4.

Nonetheless, the editorial change seems to be applicable even without having this issue resolved, because it doesn't actually change the normative state by itself.