[PATCH] 77864 Fix noexcept conditions for map/set default constructors

[Marc Glisse]

On Wed, 5 Oct 2016, Jonathan Wakely wrote:

> I added conditional noexcept to maps and sets, but forgot to account
> for the comparison function, which could throw when constructed.

IMO you are fighting a losing battle. We should implement noexcept(auto) 
(possibly with some private __noexcept_auto__ spelling) and just use that 
in most places where we want a conditional noexcept.

-- 
Marc Glisse