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Fix msvc-14.1 errors caused by their unconstrained stdext::hash_value overload (!)

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Peter Dimov
2021-10-17 00:09:20 +03:00
parent 3f2612d36e
commit 9348a89fb4
1 changed files with 38 additions and 0 deletions
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38
include/boost/container_hash/hash.hpp
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@@ -179,6 +179,44 @@ namespace boost
return boost::hash_unordered_range( v.begin(), v.end() );
}
#if defined(BOOST_MSVC) && BOOST_MSVC >= 1910 && BOOST_MSVC < 1920 && BOOST_CXX_VERSION >= 201700L
// resolve ambiguity with unconstrained stdext::hash_value in <xhash> :-/
template<template<class...> class L, class... T>
typename boost::enable_if_c<hash_detail::is_range<L<T...>>::value && !hash_detail::is_contiguous_range<L<T...>>::value && !hash_detail::is_unordered_range<L<T...>>::value, std::size_t>::type
hash_value( L<T...> const& v )
{
return boost::hash_range( v.begin(), v.end() );
}
// contiguous ranges (string, vector, array)
template<template<class...> class L, class... T>
typename boost::enable_if<hash_detail::is_contiguous_range<L<T...>>, std::size_t>::type
hash_value( L<T...> const& v )
{
return boost::hash_range( v.data(), v.data() + v.size() );
}
template<template<class, std::size_t> class L, class T, std::size_t N>
typename boost::enable_if<hash_detail::is_contiguous_range<L<T, N>>, std::size_t>::type
hash_value( L<T, N> const& v )
{
return boost::hash_range( v.data(), v.data() + v.size() );
}
// unordered ranges (unordered_set, unordered_map)
template<template<class...> class L, class... T>
typename boost::enable_if<hash_detail::is_unordered_range<L<T...>>, std::size_t>::type
hash_value( L<T...> const& v )
{
return boost::hash_unordered_range( v.begin(), v.end() );
}
#endif
// std::type_index
#if !defined(BOOST_NO_CXX11_HDR_TYPEINDEX)