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missing make_pair() for r-value refs (#264)

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* missing make_pair() for r-value refs

hello guys!

the `make_pair()` for r-value refs is required for r-value, otherwise `non-copyable` but `movable` can be constructed.


thanks!

* fix for prev commit

conditional support for r-values was fixed

* the test case was added

* fix for prev commit

* Update Jamfile

* one more fix for Jamfile

* the forgotten r-value ctor was added

* ah, they should be conditional
This commit is contained in:
niXman
2023-02-11 02:10:25 +00:00
committed by GitHub
parent d6298309fb
commit 3044c2beaf
3 changed files with 39 additions and 0 deletions
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11
include/boost/fusion/support/pair.hpp
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@ -120,6 +120,17 @@ namespace boost { namespace fusion
return pair<First, typename detail::as_fusion_element<Second>::type>(val);
}
#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
template <typename First, typename Second>
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
inline typename result_of::make_pair<First,Second>::type
make_pair(Second&& val)
{
return pair<First, typename detail::as_fusion_element<Second>::type>(
BOOST_FUSION_FWD_ELEM(Second, val));
}
#endif
template <typename First, typename Second>
inline std::ostream&
operator<<(std::ostream& os, pair<First, Second> const& p)