[Development] QDateTime addDays logic

[Edward Welbourne]

NIkolai Marchenko (13 December 2018 15:24)
> It's not like I don't understand all that. But I am not that person who introduced the regression and
>
> a) He doesn't use a compiler that supports this warning
> b) ... and he wouldn't have read it in the first place. (unfortunately)
> c) He doesn't much care about docs

Well, perhaps this little accident will teach that person the benefits
of reading function signatures (or maybe even documentation), using a
compiler that gives warnings and paying attention to its attempts to
save him from his own mistakes.

> Not saying it's correct, just stating the fact that function name is
> confusing and potentially problematic because it doesn't do what it
> states it does.

Aye, there's plenty that isn't perfect, especially in old APIs.  None
the less, the Qt project makes strong backward-compatibility promises;
part of the price of that is that we don't lightly change APIs, even
when they aren't ideally named.

	Eddy.