[Bug libstdc++/66699] Incorrect order of destruction for std::tuple elements

["antoshkka at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66699

--- Comment #3 from Antony Polukhin <antoshkka at gmail dot com> ---
(In reply to Martin Sebor from comment #2)
> Since the layout of std::pair members is fully specified, so is the order of
> their initialization and destruction.  The output of the test case reflects
> this order.
> 
> The order of initialization (and destruction) of std:stuple subobjects is
> less clearly specified.  At least it's not immediately obvious from my
> reading of the spec if any particular order is required.

I'm pointing out that according to Standard std::pair<First, Second> and
std::tuple<First, Second> must be similar. std::pair destruction order is fully
specified, so that order must be used by tuple too.