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Give tuple a constexpr default constructor.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@159857 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant
2012-07-06 20:39:45 +00:00
parent a0b5befbd3
commit 5394c1ed30
2 changed files with 23 additions and 3 deletions
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12
include/tuple
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@@ -227,7 +227,7 @@ class __tuple_leaf
__tuple_leaf& operator=(const __tuple_leaf&);
public:
_LIBCPP_INLINE_VISIBILITY __tuple_leaf() : value()
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR __tuple_leaf() : value()
{static_assert(!is_reference<_Hp>::value,
"Attempted to default construct a reference element in a tuple");}
@@ -347,7 +347,7 @@ class __tuple_leaf<_Ip, _Hp, true>
__tuple_leaf& operator=(const __tuple_leaf&);
public:
_LIBCPP_INLINE_VISIBILITY __tuple_leaf() {}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR __tuple_leaf() {}
template <class _Alloc>
_LIBCPP_INLINE_VISIBILITY
@@ -436,6 +436,9 @@ template<size_t ..._Indx, class ..._Tp>
struct __tuple_impl<__tuple_indices<_Indx...>, _Tp...>
: public __tuple_leaf<_Indx, _Tp>...
{
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR __tuple_impl() {}
template <size_t ..._Uf, class ..._Tf,
size_t ..._Ul, class ..._Tl, class ..._Up>
_LIBCPP_INLINE_VISIBILITY
@@ -531,6 +534,9 @@ class _LIBCPP_VISIBLE tuple
typename tuple_element<_Jp, tuple<_Up...> >::type&& get(tuple<_Up...>&&) _NOEXCEPT;
public:
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR tuple() {}
_LIBCPP_INLINE_VISIBILITY
explicit tuple(const _Tp& ... __t)
: base_(typename __make_tuple_indices<sizeof...(_Tp)>::type(),
@@ -687,7 +693,7 @@ class _LIBCPP_VISIBLE tuple<>
{
public:
_LIBCPP_INLINE_VISIBILITY
tuple() {}
_LIBCPP_CONSTEXPR tuple() {}
template <class _Alloc>
_LIBCPP_INLINE_VISIBILITY
tuple(allocator_arg_t, const _Alloc&) {}