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PATH: opt / cpanel / ea-ruby27 / src / passenger-release-6.1.2 / src / cxx_supportlib / vendor-modified / boost / core

#ifndef BOOST_CORE_LAUNDER_HPP_INCLUDED
#define BOOST_CORE_LAUNDER_HPP_INCLUDED

// MS compatible compilers support #pragma once

#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif

//  Copyright 2023 Peter Dimov
//  Distributed under the Boost Software License, Version 1.0.
//  https://www.boost.org/LICENSE_1_0.txt

#include <boost/config.hpp>

#if defined(__has_builtin)
# if __has_builtin(__builtin_launder)
#  define BOOST_CORE_HAS_BUILTIN_LAUNDER
# endif
#endif

#if defined(BOOST_MSVC) && BOOST_MSVC < 1920

// msvc-14.1 suffers from internal compiler errors when using std::launder
// https://github.com/boostorg/core/issues/160
// https://github.com/boostorg/optional/issues/122

#elif (BOOST_CXX_VERSION >= 201703L) && !defined(BOOST_CORE_HAS_BUILTIN_LAUNDER)

#include <new>

#if defined(__cpp_lib_launder)
# define BOOST_CORE_HAS_STD_LAUNDER
#endif

#endif

namespace boost
{
namespace core
{

#if defined(BOOST_CORE_HAS_BUILTIN_LAUNDER)

template<class T> T* launder( T* p )
{
    return __builtin_launder( p );
}

#elif defined(BOOST_CORE_HAS_STD_LAUNDER)

template<class T> T* launder( T* p )
{
    return std::launder( p );
}

#else

template<class T> T* launder( T* p )
{
    return p;
}

#endif

} // namespace core
} // namespace boost

#endif  // #ifndef BOOST_CORE_LAUNDER_HPP_INCLUDED

[-] ref.hpp [edit]
[-] default_allocator.hpp [edit]
[-] allocator_access.hpp [edit]
[-] no_exceptions_support.hpp [edit]
[-] uncaught_exceptions.hpp [edit]
[-] invoke_swap.hpp [edit]
[-] quick_exit.hpp [edit]
[-] launder.hpp [edit]
[-] swap.hpp [edit]
[-] enable_if.hpp [edit]
[-] first_scalar.hpp [edit]
[-] memory_resource.hpp [edit]
[-] make_span.hpp [edit]
[-] scoped_enum.hpp [edit]
[-] exchange.hpp [edit]
[-] cmath.hpp [edit]
[-] lightweight_test_trait.hpp [edit]
[-] max_align.hpp [edit]
[-] demangle.hpp [edit]
[-] noinit_adaptor.hpp [edit]
[-] empty_value.hpp [edit]
[+] ..
[-] underlying_type.hpp [edit]
[-] null_deleter.hpp [edit]
[-] data.hpp [edit]
[-] allocator_traits.hpp [edit]
[-] is_same.hpp [edit]
[-] verbose_terminate_handler.hpp [edit]
[-] fclose_deleter.hpp [edit]
[-] span.hpp [edit]
[-] lightweight_test.hpp [edit]
[-] use_default.hpp [edit]
[-] alignof.hpp [edit]
[-] size.hpp [edit]
[-] checked_delete.hpp [edit]
[-] typeinfo.hpp [edit]
[-] nvp.hpp [edit]
[-] serialization.hpp [edit]
[-] snprintf.hpp [edit]
[-] type_name.hpp [edit]
[-] addressof.hpp [edit]
[-] explicit_operator_bool.hpp [edit]
[-] yield_primitives.hpp [edit]
[-] pointer_in_range.hpp [edit]
[+] detail
[-] pointer_traits.hpp [edit]
[-] identity.hpp [edit]
[-] alloc_construct.hpp [edit]
[-] ignore_unused.hpp [edit]
[-] bit.hpp [edit]
[-] noncopyable.hpp [edit]
[-] functor.hpp [edit]