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libstdc++: Remove unused functions in std::variant implementation

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These functions aren't used, and accessing the storage as a void* isn't
compatible with C++20 constexpr requirements anyway, so we're unlikely
to ever start using them in future.

libstdc++-v3/ChangeLog:

	* include/std/variant (_Variant_storage::_M_storage()): Remove.
	(__detail::__variant::__get_storage): Remove.
	(variant): Remove friend declaration of __get_storage.
This commit is contained in:
Jonathan Wakely 2021-10-15 11:52:08 +01:00
parent a01704fc45
commit 1ba7adabf2
1 changed files with 0 additions and 23 deletions
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23
libstdc++-v3/include/std/variant
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@ -434,13 +434,6 @@ namespace __variant
~_Variant_storage()
{ _M_reset(); }
void*
_M_storage() const noexcept
{
return const_cast<void*>(static_cast<const void*>(
std::addressof(_M_u)));
}
constexpr bool
_M_valid() const noexcept
{
@ -472,13 +465,6 @@ namespace __variant
void _M_reset() noexcept
{ _M_index = static_cast<__index_type>(variant_npos); }
void*
_M_storage() const noexcept
{
return const_cast<void*>(static_cast<const void*>(
std::addressof(_M_u)));
}
constexpr bool
_M_valid() const noexcept
{
@ -809,11 +795,6 @@ namespace __variant
: _FUN_type<_Tp, _Variant>
{ };
// Returns the raw storage for __v.
template<typename _Variant>
void* __get_storage(_Variant&& __v) noexcept
{ return __v._M_storage(); }
template <typename _Maybe_variant_cookie, typename _Variant>
struct _Extra_visit_slot_needed
{
@ -1690,10 +1671,6 @@ namespace __variant
friend constexpr decltype(auto)
__detail::__variant::__get(_Vp&& __v) noexcept;
template<typename _Vp>
friend void*
__detail::__variant::__get_storage(_Vp&& __v) noexcept;
#define _VARIANT_RELATION_FUNCTION_TEMPLATE(__OP) \
template<typename... _Tp> \
friend constexpr bool \