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Implement LWG#2948: unique_ptr does not define operator<< for stream output

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@319038 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2017-11-27 15:51:36 +00:00
parent c72032be60
commit b25029437e
5 changed files with 77 additions and 2 deletions
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12
include/ostream
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@@ -1071,6 +1071,18 @@ operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p)
return __os << __p.get();
}
template<class _CharT, class _Traits, class _Yp, class _Dp>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
is_same<void, typename __void_t<decltype(declval<basic_ostream<_CharT, _Traits>&>() << declval<_Yp>())>::type>::value,
basic_ostream<_CharT, _Traits>&
>::type
operator<<(basic_ostream<_CharT, _Traits>& __os, unique_ptr<_Yp, _Dp> const& __p)
{
return __os << __p.get();
}
template <class _CharT, class _Traits, size_t _Size>
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x)