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libstdc++: Use std::construct_at in net::ip::address

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Using placement-new isn't valid in constant expressions, so this
replaces it with std::construct_at (via the std::_Construct function
that is usable before C++20).

libstdc++-v3/ChangeLog:

	* include/experimental/internet (address): Use std::_Construct
	to initialize union members.
This commit is contained in:
Jonathan Wakely 2021-11-17 15:05:43 +00:00
parent 5a9572e486
commit 5ea8803e65
1 changed files with 4 additions and 4 deletions
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8
libstdc++-v3/include/experimental/internet
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@ -466,9 +466,9 @@ namespace ip
address(const address& __a) noexcept : _M_uninit(), _M_is_v4(__a._M_is_v4)
{
if (_M_is_v4)
::new (std::addressof(_M_v4)) address_v4(__a.to_v4());
std::_Construct(std::addressof(_M_v4), __a.to_v4());
else
::new (std::addressof(_M_v6)) address_v6(__a.to_v6());
std::_Construct(std::addressof(_M_v6), __a.to_v6());
}
constexpr
@ -491,7 +491,7 @@ namespace ip
address&
operator=(const address_v4& __a) noexcept
{
::new (std::addressof(_M_v4)) address_v4(__a);
std::_Construct(std::addressof(_M_v4), __a);
_M_is_v4 = true;
return *this;
}
@ -499,7 +499,7 @@ namespace ip
address&
operator=(const address_v6& __a) noexcept
{
::new (std::addressof(_M_v6)) address_v6(__a);
std::_Construct(std::addressof(_M_v6), __a);
_M_is_v4 = false;
return *this;
}