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update boost on linux

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This commit is contained in:
Bassem Girgis
2019-08-10 16:06:25 -05:00
parent 76ad52be58
commit 861b918727
5363 changed files with 483306 additions and 116507 deletions
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18
linx64/include/boost/hana/ext/std/array.hpp
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@@ -149,13 +149,21 @@ BOOST_HANA_NAMESPACE_BEGIN
//////////////////////////////////////////////////////////////////////////
template <>
struct less_impl<ext::std::array_tag, ext::std::array_tag> {
template <typename T, typename U>
static constexpr auto apply(std::array<T, 0> const&, std::array<U, 0> const&)
{ return hana::false_c; }
template <typename T, std::size_t n, typename U, std::size_t m>
static constexpr auto apply(std::array<T, n> const& xs, std::array<U, m> const& ys) {
return detail::lexicographical_compare(&xs[0], &xs[0] + n, &ys[0], &ys[0] + m);
// This logic is more complex than it needs to be because we can't
// use `.begin()` and `.end()`, which are not constexpr in C++14,
// and because `&arr[0]` is UB when the array is empty.
if (xs.empty()) {
return !ys.empty();
} else {
if (ys.empty()) {
return false;
} else {
return detail::lexicographical_compare(&xs[0], &xs[0] + n,
&ys[0], &ys[0] + m);
}
}
}
};
BOOST_HANA_NAMESPACE_END