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Section: 20.5.4 [tuple.creation] Status: C++14 Submitter: Rein Halbersma Opened: 2013-09-11 Last modified: 2016-01-28
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In N3471, a bunch of routines from header <tuple> were made constexpr.make_tuple/tuple_cat/get<>(tuple)/relational operators — all these were "constexpr-ified". But not tie. This is similar to Issue 2275, where the same observation was made about forward_as_tuple.
[2014-02-13 Issaquah: Move as Immediate]
This wording is relative to N3691.
Change the header <tuple> synopsis, 20.5.1 [tuple.general] p2 as indicated:
template<class... Types> tuple<Types&...> tie(Types&...) noexcept;
Change 20.5.4 [tuple.creation] around p7 as indicated:
template<class... Types> tuple<Types&...> tie(Types&... t) noexcept;