Default the copy and move constructors for __tuple_leaf. This fixes bugs 18853 and 19118. Add a test case for that.
llvm-svn: 206829
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 7546a111a907ec9a03ccdb4d96a6d26fed4fb6cc
diff --git a/include/tuple b/include/tuple
index 3a1752e..27a5a46 100644
--- a/include/tuple
+++ b/include/tuple
@@ -268,17 +268,8 @@
>::value)),
"Attempted to construct a reference element in a tuple with an rvalue");}
- _LIBCPP_INLINE_VISIBILITY
- _LIBCPP_CONSTEXPR_AFTER_CXX11
- __tuple_leaf(const __tuple_leaf& __t) _NOEXCEPT_(is_nothrow_copy_constructible<_Hp>::value)
- : value(__t.get())
- {static_assert(!is_rvalue_reference<_Hp>::value, "Can not copy a tuple with rvalue reference member");}
-
- _LIBCPP_INLINE_VISIBILITY
- _LIBCPP_CONSTEXPR_AFTER_CXX11
- __tuple_leaf(__tuple_leaf&& __t) _NOEXCEPT_(is_nothrow_move_constructible<_Hp>::value)
- : value(_VSTD::forward<_Hp>(__t.get()))
- {}
+ __tuple_leaf(const __tuple_leaf& __t) = default;
+ __tuple_leaf(__tuple_leaf&& __t) = default;
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY