C++N4606 (224) 17.6.4.6 Replacement functions [replacement.functions]p477

#はじめに
N4606 Working Draft, Standard for Programming Language C++
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/#mailing2016-11
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/n4606.pdf

n4606は、ISO/IEC JTC1 SC22 WG21の作業原案(Working Draft)です。
公式のISO/IEC 14882原本ではありません。
ISO/IEC JTC1 SC22 WG21では、可能な限り作業文書を公開し、幅広い意見を求めています。
一連の記事はコード断片をコンパイルできる形にする方法を検討してコンパイル、リンク、実行して、規格案の原文と処理系(g++, Clang++)との違いを確認し、技術内容を検討し、ISO/IEC JTC1 SC22 WG21にフィードバックするために用います。
また、CERT C++, MISRA C++等のコーディング標準のコード断片をコンパイルする際の参考にさせていただこうと考えています。CERT C++, MISRA C++が標準化の動きとの時間的なずれがあれば確認できれば幸いです。また、boostライブラリとの関連、Linux OS, TOPPERSカーネル、g++(GCC), clang++(LLVM）との関係も調査中です。
何か、抜け漏れ、耳より情報がありましたらおしらせくださると幸いです。

##作業方針
１）コンパイルエラーを収集する。
２）コンパイルエラーをなくす方法を検討する。
コンパイルエラーになる例を示すだけが目的のコードは、コンパイルエラーをなくすのではなく、コンパイルエラーの種類を収集するだけにする。
文法を示すのが目的のコード場合に、コンパイルエラーをなくすのに手間がかかる場合は、順次作業します。
３）リンクエラーをなくす方法を検討する。
文法を示すのが目的のコード場合に、リンクエラーをなくすのに手間がかかる場合は、順次作業します。
４）意味のある出力を作る。
コンパイル、リンクが通っても、意味のある出力を示そうとすると、コンパイル・リンクエラーが出て収拾できそうにない場合がある。順次作業します。

１）だけのものから４）まで進んだものと色々ある状態です。一歩でも前に進むご助言をお待ちしています。「検討事項」の欄に現状を記録するようにしています。

## list
N4606 Working Draft 2016, ISO/IEC 14882, C++ standard(1) coding list
https://qiita.com/kaizen_nagoya/items/df5d62c35bd6ed1c3d43/


## Compiler
###clang++ --version
clang version 6.0.0 (tags/RELEASE_600/final)
Target: x86_64-apple-darwin17.4.0

###g++-7 --version
g++-7 (Homebrew GCC 7.3.0_1) 7.3.0
Copyright (C) 2017 Free Software Foundation, Inc.

#(224) 17.6.4.6 Replacement functions [replacement.functions]p477

```c++:p477.cpp
// N4606 Committee Draft, Standard for Programming Language C++
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/n4606.pdf
#define msg "(224) 17.6.4.6 Replacement functions [replacement.functions]p477.cpp"
// Edited by Dr. Ogawa Kiyoshi. Compile procedure and results record.

#include <iostream>
#include <new>

 operator new(std::size_t)
 operator new(std::size_t, std::align_val_t)
 operator new(std::size_t, const std::nothrow_t&)
 operator new(std::size_t, std::align_val_t, const std::nothrow_t&)
 operator delete(void*)
 operator delete(void*, std::size_t)
 operator delete(void*, std::align_val_t)
 operator delete(void*, std::size_t, std::align_val_t)
 operator delete(void*, const std::nothrow_t&)
 operator delete(void*, std::align_val_t, const std::nothrow_t&)
 operator new[](std::size_t)
 operator new[](std::size_t, std::align_val_t)
 operator new[](std::size_t, const std::nothrow_t&)
 operator new[](std::size_t, std::align_val_t, const std::nothrow_t&)
 operator delete[](void*)
 operator delete[](void*, std::size_t)
 operator delete[](void*, std::align_val_t)
 operator delete[](void*, std::size_t, std::align_val_t)
 operator delete[](void*, const std::nothrow_t&)
 operator delete[](void*, std::align_val_t, const std::nothrow_t&)

int main() {
  std::cout<< msg << std::endl;
  return EXIT_SUCCESS;
}
```

```shell_session:cppgl17.sh
$ ./cppgl17.sh p477
$ clang++ p477.cpp -std=c++17 
p477.cpp:10:2: error: expected function body after function declarator
 operator new(std::size_t, std::align_val_t)
 ^
1 error generated.

$ g++-7 p477.cpp -std=c++17 
p477.cpp:10:2: error: expected constructor, destructor, or type conversion before 'operator'
  operator new(std::size_t, std::align_val_t)
  ^~~~~~~~

```
newはvoid *を返す。

```c++:p477-2.cpp
// N4606 Committee Draft, Standard for Programming Language C++
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/n4606.pdf
#define msg "(224) 17.6.4.6 Replacement functions [replacement.functions]p477-2.cpp"
// Edited by Dr. Ogawa Kiyoshi. Compile procedure and results record.

#include <iostream>
#include <new>

void * operator new(std::size_t)
void * operator new(std::size_t, std::align_val_t)
void * operator new(std::size_t, const std::nothrow_t&)
void * operator new(std::size_t, std::align_val_t, const std::nothrow_t&)
void * operator delete(void*)
void * operator delete(void*, std::size_t)
void * operator delete(void*, std::align_val_t)
void * operator delete(void*, std::size_t, std::align_val_t)
void * operator delete(void*, const std::nothrow_t&)
void * operator delete(void*, std::align_val_t, const std::nothrow_t&)
void * operator new[](std::size_t)
void * operator new[](std::size_t, std::align_val_t)
void * operator new[](std::size_t, const std::nothrow_t&)
void * operator new[](std::size_t, std::align_val_t, const std::nothrow_t&)
void * operator delete[](void*)
void * operator delete[](void*, std::size_t)
void * operator delete[](void*, std::align_val_t)
void * operator delete[](void*, std::size_t, std::align_val_t)
void * operator delete[](void*, const std::nothrow_t&)
void * operator delete[](void*, std::align_val_t, const std::nothrow_t&)

int main() {
  std::cout<< msg << std::endl;
  return EXIT_SUCCESS;
}
```

```shell_session:cppgl17.sh
$ ./cppgl17.sh p477-2
$ clang++ p477-2.cpp -std=c++17 
p477-2.cpp:9:33: error: expected ';' after top level declarator
void * operator new(std::size_t)
                                ^
                                ;
p477-2.cpp:10:51: error: expected ';' after top level declarator
void * operator new(std::size_t, std::align_val_t)
                                                  ^
                                                  ;
p477-2.cpp:11:8: warning: 'operator new' is missing exception specification 'noexcept' [-Wmissing-exception-spec]
void * operator new(std::size_t, const std::nothrow_t&)
       ^
                                                        noexcept
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:182:66: note: previous declaration is here
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT ...
                                                                 ^
p477-2.cpp:11:56: error: expected ';' after top level declarator
void * operator new(std::size_t, const std::nothrow_t&)
                                                       ^
                                                       ;
p477-2.cpp:12:8: warning: 'operator new' is missing exception specification 'noexcept' [-Wmissing-exception-spec]
void * operator new(std::size_t, std::align_val_t, const std::nothrow_t&)
       ^
                                                                          noexcept
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:199:66: note: previous declaration is here
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t, const std::noth...
                                                                 ^
p477-2.cpp:12:74: error: expected ';' after top level declarator
void * operator new(std::size_t, std::align_val_t, const std::nothrow_t&)
                                                                         ^
                                                                         ;
p477-2.cpp:13:8: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void * operator delete(void*)
       ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:183:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p) _NOEXCEPT;
                                   ^
p477-2.cpp:13:8: error: functions that differ only in their return type cannot be overloaded
void * operator delete(void*)
~~~~~~ ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:183:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p) _NOEXCEPT;
                             ~~~~  ^
p477-2.cpp:13:30: error: expected ';' after top level declarator
void * operator delete(void*)
                             ^
                             ;
p477-2.cpp:14:8: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void * operator delete(void*, std::size_t)
       ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:186:74: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete(void* __p, std::size_t __sz) _NOEXCEPT;
                                                                         ^
p477-2.cpp:14:8: error: functions that differ only in their return type cannot be overloaded
void * operator delete(void*, std::size_t)
~~~~~~ ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:186:74: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete(void* __p, std::size_t __sz) _NOEXCEPT;
                                                                   ~~~~  ^
p477-2.cpp:14:43: error: expected ';' after top level declarator
void * operator delete(void*, std::size_t)
                                          ^
                                          ;
p477-2.cpp:15:8: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void * operator delete(void*, std::align_val_t)
       ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:200:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, std::align_val_t) _NOEXCEPT;
                                   ^
p477-2.cpp:15:8: error: functions that differ only in their return type cannot be overloaded
void * operator delete(void*, std::align_val_t)
~~~~~~ ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:200:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, std::align_val_t) _NOEXCEPT;
                             ~~~~  ^
p477-2.cpp:15:48: error: expected ';' after top level declarator
void * operator delete(void*, std::align_val_t)
                                               ^
                                               ;
p477-2.cpp:16:8: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void * operator delete(void*, std::size_t, std::align_val_t)
       ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:203:74: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete(void* __p, std::size_t __sz, std::align_...
                                                                         ^
p477-2.cpp:16:8: error: functions that differ only in their return type cannot be overloaded
void * operator delete(void*, std::size_t, std::align_val_t)
~~~~~~ ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:203:74: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete(void* __p, std::size_t __sz, std::align_...
                                                                   ~~~~  ^
p477-2.cpp:16:61: error: expected ';' after top level declarator
void * operator delete(void*, std::size_t, std::align_val_t)
                                                            ^
                                                            ;
p477-2.cpp:17:8: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void * operator delete(void*, const std::nothrow_t&)
       ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:184:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
                                   ^
p477-2.cpp:17:8: error: functions that differ only in their return type cannot be overloaded
void * operator delete(void*, const std::nothrow_t&)
~~~~~~ ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:184:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
                             ~~~~  ^
p477-2.cpp:17:53: error: expected ';' after top level declarator
void * operator delete(void*, const std::nothrow_t&)
                                                    ^
                                                    ;
p477-2.cpp:18:8: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void * operator delete(void*, std::align_val_t, const std::nothrow_t&)
       ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:201:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT;
                                   ^
p477-2.cpp:18:8: error: functions that differ only in their return type cannot be overloaded
void * operator delete(void*, std::align_val_t, const std::nothrow_t&)
~~~~~~ ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:201:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT;
                             ~~~~  ^
p477-2.cpp:18:71: error: expected ';' after top level declarator
void * operator delete(void*, std::align_val_t, const std::nothrow_t&)
                                                                      ^
                                                                      ;
p477-2.cpp:19:35: error: expected ';' after top level declarator
void * operator new[](std::size_t)
                                  ^
                                  ;
p477-2.cpp:20:53: error: expected ';' after top level declarator
void * operator new[](std::size_t, std::align_val_t)
                                                    ^
                                                    ;
p477-2.cpp:21:8: warning: 'operator new[]' is missing exception specification 'noexcept' [-Wmissing-exception-spec]
void * operator new[](std::size_t, const std::nothrow_t&)
       ^
                                                          noexcept
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:190:66: note: previous declaration is here
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEP...
                                                                 ^
p477-2.cpp:21:58: error: expected ';' after top level declarator
void * operator new[](std::size_t, const std::nothrow_t&)
                                                         ^
                                                         ;
p477-2.cpp:22:8: warning: 'operator new[]' is missing exception specification 'noexcept' [-Wmissing-exception-spec]
void * operator new[](std::size_t, std::align_val_t, const std::nothrow_t&)
       ^
                                                                            noexcept
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:207:66: note: previous declaration is here
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t, const std::no...
                                                                 ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
10 warnings and 20 errors generated.

$ g++-7 p477-2.cpp -std=c++17 
p477-2.cpp:10:1: error: expected initializer before 'void'
 void * operator new(std::size_t, std::align_val_t)
 ^~~~

```
行末に;, deleteは戻りはvoid

```c++:p477-3.cpp
// N4606 Committee Draft, Standard for Programming Language C++
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/n4606.pdf
#define msg "(224) 17.6.4.6 Replacement functions [replacement.functions]p477.cpp"
// Edited by Dr. Ogawa Kiyoshi. Compile procedure and results record.

#include <iostream>
#include <new>

void * operator new(std::size_t);
void * operator new(std::size_t, std::align_val_t);
void * operator new(std::size_t, const std::nothrow_t&);
void * operator new(std::size_t, std::align_val_t, const std::nothrow_t&);
void  operator delete(void*);
void  operator delete(void*, std::size_t);
void  operator delete(void*, std::align_val_t);
void  operator delete(void*, std::size_t, std::align_val_t);
void  operator delete(void*, const std::nothrow_t&);
void  operator delete(void*, std::align_val_t, const std::nothrow_t&);
void * operator new[](std::size_t);
void * operator new[](std::size_t, std::align_val_t);
void * operator new[](std::size_t, const std::nothrow_t&);
void * operator new[](std::size_t, std::align_val_t, const std::nothrow_t&);
void  operator delete[](void*);
void  operator delete[](void*, std::size_t);
void  operator delete[](void*, std::align_val_t);
void  operator delete[](void*, std::size_t, std::align_val_t);
void  operator delete[](void*, const std::nothrow_t&);
void  operator delete[](void*, std::align_val_t, const std::nothrow_t&);

int main() {
  std::cout<< msg << std::endl;
  return EXIT_SUCCESS;
}
```

```shell_session:cppgl17.sh
$ ./cppgl17.sh p477-3
$ clang++ p477-3.cpp -std=c++17 
p477-3.cpp:11:8: warning: 'operator new' is missing exception specification 'noexcept' [-Wmissing-exception-spec]
void * operator new(std::size_t, const std::nothrow_t&);
       ^
                                                        noexcept
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:182:66: note: previous declaration is here
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT ...
                                                                 ^
p477-3.cpp:12:8: warning: 'operator new' is missing exception specification 'noexcept' [-Wmissing-exception-spec]
void * operator new(std::size_t, std::align_val_t, const std::nothrow_t&);
       ^
                                                                          noexcept
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:199:66: note: previous declaration is here
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t, const std::noth...
                                                                 ^
p477-3.cpp:13:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete(void*);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:183:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p) _NOEXCEPT;
                                   ^
p477-3.cpp:14:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete(void*, std::size_t);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:186:74: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete(void* __p, std::size_t __sz) _NOEXCEPT;
                                                                         ^
p477-3.cpp:15:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete(void*, std::align_val_t);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:200:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, std::align_val_t) _NOEXCEPT;
                                   ^
p477-3.cpp:16:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete(void*, std::size_t, std::align_val_t);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:203:74: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete(void* __p, std::size_t __sz, std::align_...
                                                                         ^
p477-3.cpp:17:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete(void*, const std::nothrow_t&);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:184:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
                                   ^
p477-3.cpp:18:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete(void*, std::align_val_t, const std::nothrow_t&);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:201:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT;
                                   ^
p477-3.cpp:21:8: warning: 'operator new[]' is missing exception specification 'noexcept' [-Wmissing-exception-spec]
void * operator new[](std::size_t, const std::nothrow_t&);
       ^
                                                          noexcept
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:190:66: note: previous declaration is here
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEP...
                                                                 ^
p477-3.cpp:22:8: warning: 'operator new[]' is missing exception specification 'noexcept' [-Wmissing-exception-spec]
void * operator new[](std::size_t, std::align_val_t, const std::nothrow_t&);
       ^
                                                                            noexcept
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:207:66: note: previous declaration is here
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t, const std::no...
                                                                 ^
p477-3.cpp:23:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete[](void*);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:191:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete[](void* __p) _NOEXCEPT;
                                   ^
p477-3.cpp:24:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete[](void*, std::size_t);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:194:74: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete[](void* __p, std::size_t __sz) _NOEXCEPT;
                                                                         ^
p477-3.cpp:25:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete[](void*, std::align_val_t);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:208:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete[](void* __p, std::align_val_t) _NOEXCEPT;
                                   ^
p477-3.cpp:26:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete[](void*, std::size_t, std::align_val_t);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:211:74: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete[](void* __p, std::size_t __sz, std::alig...
                                                                         ^
p477-3.cpp:27:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete[](void*, const std::nothrow_t&);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:192:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT;
                                   ^
p477-3.cpp:28:7: warning: function previously declared with an explicit exception specification redeclared with an implicit exception
      specification [-Wimplicit-exception-spec-mismatch]
void  operator delete[](void*, std::align_val_t, const std::nothrow_t&);
      ^
/usr/local/Cellar/llvm/6.0.0/include/c++/v1/new:209:36: note: previous declaration is here
_LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete[](void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT;
                                   ^
16 warnings generated.
(224) 17.6.4.6 Replacement functions [replacement.functions]p477.cpp

$ g++-7 p477-3.cpp -std=c++17 
(224) 17.6.4.6 Replacement functions [replacement.functions]p477.cpp

```


タブを２つの空白に変換しているスクリプトは下記。

```sh:a.sh
#!/bin/bash
astyle -s2 -c < $1.cpp > $1s2.cpp
cat $1s2.cpp
```

#検討事項
役に立つまたは意味のある出力


#参考資料


N4606 Working Draft 2016, ISO/IEC 14882, C++ standardのコード断片をコンパイルするためにしていること
https://qiita.com/kaizen_nagoya/items/a8d7ee2f2e29e76c19c1


コンパイル用shell script C版(clangとgcc)とC++版(clang++とg++)
https://qiita.com/kaizen_nagoya/items/74220c0577a512c2d7da

Clang/Clang++(LLVM) gcc/g++(GNU) コンパイラ警告等比較
https://qiita.com/kaizen_nagoya/items/9a82b958cc3aeef0403f

Qiitaに投稿するCのStyle例(暫定)
https://qiita.com/kaizen_nagoya/items/946df1528a6a1ef2bc0d

MISRA C++ 5-0-16
https://qiita.com/kaizen_nagoya/items/7df2d4e05db724752a74

C++ Templates Part1 BASICS Chapter 3. Class Templates 3.2 Use of Class Template Stack stack1test.cpp
https://qiita.com/kaizen_nagoya/items/cd5fc49106fad5a4e9ed


ISO/IEC TS 17961:2013 C Secure Coding Rules(1) All list(to be confirmed)
https://qiita.com/kaizen_nagoya/items/54e056195c4f11b850a1

C言語（C++)に対する誤解、曲解、無理解、爽快。
https://qiita.com/kaizen_nagoya/items/3f3992c9722c1cee2e3a

C Puzzle Bookの有り難み5つ、C言語規格及びCコンパイラの特性を認識
https://qiita.com/kaizen_nagoya/items/d89a48c1536a02ecdec9

'wchar.h' file not found で困った clang++ macOS
https://qiita.com/kaizen_nagoya/items/de15cd46d657517fac11

Open POSIX Test Suiteの使い方を調べはじめました
https://qiita.com/kaizen_nagoya/items/644d5e407f5faf96e6dc

MISRA-C 2012 Referenceに掲載している文献の入手可能性を確認
https://qiita.com/kaizen_nagoya/items/96dc8b125e462d5575bb

どうやって MISRA Example Suiteをコンパイルするか
https://qiita.com/kaizen_nagoya/items/fbdbff5ff696e2ca7f00

MISRA C まとめ #include <misra_c.h>
https://qiita.com/kaizen_nagoya/items/f1a79a7cbd281607c7c9

「C++完全理解ガイド」の同意できること上位10
https://qiita.com/kaizen_nagoya/items/aa5744e0c4a8618c7671

#文書履歴
0.10 初稿 20180422