FM / bits

/usr/include/c++/11/bits

Name	Size	Mode	Actions
algorithmfwd.h	24547	0644	edit dl rm
align.h	3711	0644	edit dl rm
allocated_ptr.h	3329	0644	edit dl rm
allocator.h	9737	0644	edit dl rm
alloc_traits.h	27632	0644	edit dl rm
atomic_base.h	57414	0644	edit dl rm
atomic_futex.h	12394	0644	edit dl rm
atomic_lockfree_defines.h	2353	0644	edit dl rm
atomic_timed_wait.h	13530	0644	edit dl rm
atomic_wait.h	12557	0644	edit dl rm
basic_ios.h	16080	0644	edit dl rm
basic_ios.tcc	6083	0644	edit dl rm
basic_string.h	251944	0644	edit dl rm
basic_string.tcc	54189	0644	edit dl rm
boost_concept_check.h	27182	0644	edit dl rm
c++0x_warning.h	1474	0644	edit dl rm
charconv.h	3435	0644	edit dl rm
char_traits.h	29350	0644	edit dl rm
codecvt.h	25500	0644	edit dl rm
concept_check.h	3423	0644	edit dl rm
cpp_type_traits.h	14003	0644	edit dl rm
cxxabi_forced.h	1811	0644	edit dl rm
cxxabi_init_exception.h	2220	0644	edit dl rm
deque.tcc	42361	0644	edit dl rm
enable_special_members.h	12452	0644	edit dl rm
erase_if.h	2066	0644	edit dl rm
exception.h	2504	0644	edit dl rm
exception_defines.h	1645	0644	edit dl rm
exception_ptr.h	7640	0644	edit dl rm
forward_list.h	50387	0644	edit dl rm
forward_list.tcc	14035	0644	edit dl rm
fstream.tcc	33672	0644	edit dl rm
fs_dir.h	16409	0644	edit dl rm
fs_fwd.h	10771	0644	edit dl rm
fs_ops.h	10739	0644	edit dl rm
fs_path.h	39745	0644	edit dl rm
functexcept.h	3509	0644	edit dl rm
functional_hash.h	8591	0644	edit dl rm
gslice.h	5519	0644	edit dl rm
gslice_array.h	7892	0644	edit dl rm
hashtable.h	84951	0644	edit dl rm
hashtable_policy.h	62156	0644	edit dl rm
hash_bytes.h	2146	0644	edit dl rm
indirect_array.h	7902	0644	edit dl rm
invoke.h	6059	0644	edit dl rm
ios_base.h	31934	0644	edit dl rm
istream.tcc	31595	0644	edit dl rm
iterator_concepts.h	33335	0644	edit dl rm
list.tcc	17201	0644	edit dl rm
localefwd.h	5943	0644	edit dl rm
locale_classes.h	25044	0644	edit dl rm
locale_classes.tcc	8375	0644	edit dl rm
locale_conv.h	18822	0644	edit dl rm
locale_facets.h	93655	0644	edit dl rm
locale_facets.tcc	40463	0644	edit dl rm
locale_facets_nonio.h	69704	0644	edit dl rm
locale_facets_nonio.tcc	47533	0644	edit dl rm
mask_array.h	7716	0644	edit dl rm
max_size_type.h	22715	0644	edit dl rm
memoryfwd.h	2504	0644	edit dl rm
move.h	6798	0644	edit dl rm
nested_exception.h	4887	0644	edit dl rm
node_handle.h	10920	0644	edit dl rm
ostream.tcc	12315	0644	edit dl rm
ostream_insert.h	4038	0644	edit dl rm
parse_numbers.h	7980	0644	edit dl rm
postypes.h	8465	0644	edit dl rm
predefined_ops.h	10177	0644	edit dl rm
ptr_traits.h	6708	0644	edit dl rm
quoted_string.h	5053	0644	edit dl rm
random.h	178359	0644	edit dl rm
random.tcc	105688	0644	edit dl rm
ranges_algo.h	116831	0644	edit dl rm
ranges_algobase.h	18871	0644	edit dl rm
ranges_base.h	24392	0644	edit dl rm
ranges_cmp.h	6017	0644	edit dl rm
ranges_uninitialized.h	18130	0644	edit dl rm
ranges_util.h	20591	0644	edit dl rm
range_access.h	10707	0644	edit dl rm
refwrap.h	13208	0644	edit dl rm
regex.h	103969	0644	edit dl rm
regex.tcc	16492	0644	edit dl rm
regex_automaton.h	10788	0644	edit dl rm
regex_automaton.tcc	7722	0644	edit dl rm
regex_compiler.h	16219	0644	edit dl rm
regex_compiler.tcc	19158	0644	edit dl rm
regex_constants.h	15549	0644	edit dl rm
regex_error.h	5015	0644	edit dl rm
regex_executor.h	8852	0644	edit dl rm
regex_executor.tcc	18837	0644	edit dl rm
regex_scanner.h	7047	0644	edit dl rm
regex_scanner.tcc	15249	0644	edit dl rm
semaphore_base.h	7936	0644	edit dl rm
shared_ptr.h	30981	0644	edit dl rm
shared_ptr_atomic.h	9874	0644	edit dl rm
shared_ptr_base.h	54907	0644	edit dl rm
slice_array.h	9619	0644	edit dl rm
specfun.h	47240	0644	edit dl rm
sstream.tcc	10148	0644	edit dl rm
std_abs.h	3384	0644	edit dl rm
std_function.h	22863	0644	edit dl rm
std_mutex.h	6443	0644	edit dl rm
std_thread.h	8589	0644	edit dl rm
stl_algo.h	214703	0644	edit dl rm
stl_algobase.h	76254	0644	edit dl rm
stl_bvector.h	35574	0644	edit dl rm
stl_construct.h	8800	0644	edit dl rm
stl_deque.h	76970	0644	edit dl rm
stl_function.h	43897	0644	edit dl rm
stl_heap.h	20756	0644	edit dl rm
stl_iterator.h	78851	0644	edit dl rm
stl_iterator_base_funcs.h	8178	0644	edit dl rm
stl_iterator_base_types.h	9662	0644	edit dl rm
stl_list.h	69779	0644	edit dl rm
stl_map.h	54693	0644	edit dl rm
stl_multimap.h	43534	0644	edit dl rm
stl_multiset.h	37675	0644	edit dl rm
stl_numeric.h	14601	0644	edit dl rm
stl_pair.h	20135	0644	edit dl rm
stl_queue.h	25036	0644	edit dl rm
stl_raw_storage_iter.h	3830	0644	edit dl rm
stl_relops.h	4594	0644	edit dl rm
stl_set.h	37939	0644	edit dl rm
stl_stack.h	12684	0644	edit dl rm
stl_tempbuf.h	8655	0644	edit dl rm
stl_tree.h	73922	0644	edit dl rm
stl_uninitialized.h	34013	0644	edit dl rm
stl_vector.h	65919	0644	edit dl rm
streambuf.tcc	4929	0644	edit dl rm
streambuf_iterator.h	15532	0644	edit dl rm
stream_iterator.h	7697	0644	edit dl rm
stringfwd.h	2690	0644	edit dl rm
string_view.tcc	7167	0644	edit dl rm
this_thread_sleep.h	3307	0644	edit dl rm
uniform_int_dist.h	13052	0644	edit dl rm
unique_lock.h	6143	0644	edit dl rm
unique_ptr.h	32537	0644	edit dl rm
unordered_map.h	76669	0644	edit dl rm
unordered_set.h	62934	0644	edit dl rm
uses_allocator.h	6906	0644	edit dl rm
uses_allocator_args.h	7562	0644	edit dl rm
valarray_after.h	23283	0644	edit dl rm
valarray_array.h	21295	0644	edit dl rm
valarray_array.tcc	7254	0644	edit dl rm
valarray_before.h	19142	0644	edit dl rm
vector.tcc	30985	0644	edit dl rm

Edit: /usr/include/c++/11/bits/stl_construct.h (8800B)

// nonstandard construct and destroy functions -*- C++ -*-

// Copyright (C) 2001-2021 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/*
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1996,1997
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 */

/** @file bits/stl_construct.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{memory}
 */

#ifndef _STL_CONSTRUCT_H
#define _STL_CONSTRUCT_H 1

#include <new>
#include <bits/move.h>
#include <bits/stl_iterator_base_types.h> // for iterator_traits
#include <bits/stl_iterator_base_funcs.h> // for advance

/* This file provides the C++17 functions std::destroy_at, std::destroy, and
 * std::destroy_n, and the C++20 function std::construct_at.
 * It also provides std::_Construct, std::_Destroy,and std::_Destroy_n functions
 * which are defined in all standard modes and so can be used in C++98-14 code.
 * The _Destroy functions will dispatch to destroy_at during constant
 * evaluation, because calls to that function are intercepted by the compiler
 * to allow use in constant expressions.
 */

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

#if __cplusplus >= 201703L
  template <typename _Tp>
    _GLIBCXX20_CONSTEXPR inline void
    destroy_at(_Tp* __location)
    {
      if constexpr (__cplusplus > 201703L && is_array_v<_Tp>)
	{
	  for (auto& __x : *__location)
	    std::destroy_at(std::__addressof(__x));
	}
      else
	__location->~_Tp();
    }

#if __cplusplus >= 202002L
  template<typename _Tp, typename... _Args>
    constexpr auto
    construct_at(_Tp* __location, _Args&&... __args)
    noexcept(noexcept(::new((void*)0) _Tp(std::declval<_Args>()...)))
    -> decltype(::new((void*)0) _Tp(std::declval<_Args>()...))
    { return ::new((void*)__location) _Tp(std::forward<_Args>(__args)...); }
#endif // C++20
#endif// C++17

/**
   * Constructs an object in existing memory by invoking an allocated
   * object's constructor with an initializer.
   */
#if __cplusplus >= 201103L
  template<typename _Tp, typename... _Args>
    _GLIBCXX20_CONSTEXPR
    inline void
    _Construct(_Tp* __p, _Args&&... __args)
    {
#if __cplusplus >= 202002L && __has_builtin(__builtin_is_constant_evaluated)
      if (__builtin_is_constant_evaluated())
	{
	  // Allow std::_Construct to be used in constant expressions.
	  std::construct_at(__p, std::forward<_Args>(__args)...);
	  return;
	}
#endif
      ::new((void*)__p) _Tp(std::forward<_Args>(__args)...);
    }
#else
  template<typename _T1, typename _T2>
    inline void
    _Construct(_T1* __p, const _T2& __value)
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 402. wrong new expression in [some_]allocator::construct
      ::new(static_cast<void*>(__p)) _T1(__value);
    }
#endif

template<typename _T1>
    inline void
    _Construct_novalue(_T1* __p)
    { ::new((void*)__p) _T1; }

template<typename _ForwardIterator>
    _GLIBCXX20_CONSTEXPR void
    _Destroy(_ForwardIterator __first, _ForwardIterator __last);

/**
   * Destroy the object pointed to by a pointer type.
   */
  template<typename _Tp>
    _GLIBCXX14_CONSTEXPR inline void
    _Destroy(_Tp* __pointer)
    {
#if __cplusplus > 201703L
      std::destroy_at(__pointer);
#else
      __pointer->~_Tp();
#endif
    }

template<bool>
    struct _Destroy_aux
    {
      template<typename _ForwardIterator>
	static _GLIBCXX20_CONSTEXPR void
	__destroy(_ForwardIterator __first, _ForwardIterator __last)
	{
	  for (; __first != __last; ++__first)
	    std::_Destroy(std::__addressof(*__first));
	}
    };

template<>
    struct _Destroy_aux<true>
    {
      template<typename _ForwardIterator>
        static void
        __destroy(_ForwardIterator, _ForwardIterator) { }
    };

/**
   * Destroy a range of objects.  If the value_type of the object has
   * a trivial destructor, the compiler should optimize all of this
   * away, otherwise the objects' destructors must be invoked.
   */
  template<typename _ForwardIterator>
    _GLIBCXX20_CONSTEXPR inline void
    _Destroy(_ForwardIterator __first, _ForwardIterator __last)
    {
      typedef typename iterator_traits<_ForwardIterator>::value_type
                       _Value_type;
#if __cplusplus >= 201103L
      // A deleted destructor is trivial, this ensures we reject such types:
      static_assert(is_destructible<_Value_type>::value,
		    "value type is destructible");
#endif
#if __cplusplus > 201703L && defined __cpp_lib_is_constant_evaluated
      if (std::is_constant_evaluated())
	return _Destroy_aux<false>::__destroy(__first, __last);
#endif
      std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
	__destroy(__first, __last);
    }

template<bool>
    struct _Destroy_n_aux
    {
      template<typename _ForwardIterator, typename _Size>
	static _GLIBCXX20_CONSTEXPR _ForwardIterator
	__destroy_n(_ForwardIterator __first, _Size __count)
	{
	  for (; __count > 0; (void)++__first, --__count)
	    std::_Destroy(std::__addressof(*__first));
	  return __first;
	}
    };

template<>
    struct _Destroy_n_aux<true>
    {
      template<typename _ForwardIterator, typename _Size>
        static _ForwardIterator
        __destroy_n(_ForwardIterator __first, _Size __count)
	{
	  std::advance(__first, __count);
	  return __first;
	}
    };

/**
   * Destroy a range of objects.  If the value_type of the object has
   * a trivial destructor, the compiler should optimize all of this
   * away, otherwise the objects' destructors must be invoked.
   */
  template<typename _ForwardIterator, typename _Size>
    _GLIBCXX20_CONSTEXPR inline _ForwardIterator
    _Destroy_n(_ForwardIterator __first, _Size __count)
    {
      typedef typename iterator_traits<_ForwardIterator>::value_type
                       _Value_type;
#if __cplusplus >= 201103L
      // A deleted destructor is trivial, this ensures we reject such types:
      static_assert(is_destructible<_Value_type>::value,
		    "value type is destructible");
#endif
#if __cplusplus > 201703L && defined __cpp_lib_is_constant_evaluated
      if (std::is_constant_evaluated())
	return _Destroy_n_aux<false>::__destroy_n(__first, __count);
#endif
      return std::_Destroy_n_aux<__has_trivial_destructor(_Value_type)>::
	__destroy_n(__first, __count);
    }

#if __cplusplus >= 201703L
  template <typename _ForwardIterator>
    _GLIBCXX20_CONSTEXPR inline void
    destroy(_ForwardIterator __first, _ForwardIterator __last)
    {
      std::_Destroy(__first, __last);
    }

template <typename _ForwardIterator, typename _Size>
    _GLIBCXX20_CONSTEXPR inline _ForwardIterator
    destroy_n(_ForwardIterator __first, _Size __count)
    {
      return std::_Destroy_n(__first, __count);
    }
#endif // C++17

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

#endif /* _STL_CONSTRUCT_H */

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