Give tuple a constexpr default constructor.
llvm-svn: 159857
diff --git a/libcxx/include/tuple b/libcxx/include/tuple
index 683c9dd..a485d7d 100644
--- a/libcxx/include/tuple
+++ b/libcxx/include/tuple
@@ -227,7 +227,7 @@
__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 @@
__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 @@
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
@@ -532,6 +535,9 @@
public:
_LIBCPP_INLINE_VISIBILITY
+ _LIBCPP_CONSTEXPR tuple() {}
+
+ _LIBCPP_INLINE_VISIBILITY
explicit tuple(const _Tp& ... __t)
: base_(typename __make_tuple_indices<sizeof...(_Tp)>::type(),
typename __make_tuple_types<tuple, sizeof...(_Tp)>::type(),
@@ -687,7 +693,7 @@
{
public:
_LIBCPP_INLINE_VISIBILITY
- tuple() {}
+ _LIBCPP_CONSTEXPR tuple() {}
template <class _Alloc>
_LIBCPP_INLINE_VISIBILITY
tuple(allocator_arg_t, const _Alloc&) {}