7.6.2.8 New [expr.new] C++N4910:2022 (62) p132.cpp

# はじめに(Introduction)

N4910  Working Draft, Standard for Programming Language C++

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/n4910.pdf

n4910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。

 <この項は書きかけです。順次追記します。>

 

## 背景(back ground)
C/C++でコンパイルエラーが出ると、途方にくれることがしばしばあります。
何回かに１回は、該当するエラーが検索できます。
ただ、条件が違っていて、そこでの修正方法では目的を達成しないこともしばしばです。いろいろな条件のコンパイルエラーとその対応方法について、広く記録することによって、いつか同じエラーに遭遇した時にやくに立つことを目指しています。

この半年の間で、三度、自分のネットでの記録に助けられたことがあります。
また過去に解決できなかった記録を１０種類以上、最近になって解決できたことがあります。それは、主に次の３つの情報に基づいています。

https://stackoverflow.com
https://cpprefjp.github.io
http://ja.cppreference.com/

また
https://researchmap.jp/joub9b3my-1797580/#_1797580
に記載したサイトのお世話になっています。


## 作業方針(sequence)
Clang++では-std=c++03, C++2bの2種類
g++では-std=c++03, c++2bの２種類
でコンパイルし、

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。


### C++N4910:2022 Standard Working Draft on ISO/IEC 14882(0) sample code compile list  

https://qiita.com/kaizen_nagoya/items/fc957ddddd402004bb91


### C++N4741, 2018 Standard Working Draft on ISO/IEC 14882 sample code compile list
https://qiita.com/kaizen_nagoya/items/3294c014044550896010

### C++N4606, 2016符号断片編纂一覧(example code compile list)
C++N4606, 2016 Working Draft 2016, ISO/IEC 14882, C++ standard(1) Example code compile list
https://qiita.com/kaizen_nagoya/items/df5d62c35bd6ed1c3d43/

### C++N3242, 2011 sample code compile list on clang++ and g++
https://qiita.com/kaizen_nagoya/items/685b5c1a2c17c1bf1318

## 編纂器(Compiler)
### clang++ --version
> Debian clang version 14.0.5-++20220610033153+c12386ae247c-1~exp1~20220610153237.151
Target: x86_64-pc-linux-gnu, Thread model: posix, InstalledDir: /usr/bin

### g++- --version
> g++ (GCC) 12.1.0  Copyright (C) 2022 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

# 7.6.2.8 New [expr.new] C++N4910:2022 (62) p132.cpp

## 算譜(source code)

```c++:p132.cpp
// C++N4910 Committee Draft, Standard for Programming Language C++
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/n4910.pdf
const char * msg="7.6.2.8 New [expr.new] C++N4910:2022 (62) p132.cpp";
// Debian clang version 14.0.5-++20220610033153+c12386ae247c-
// g++ (GCC) 12.1.0 Copyright (C) 2022 Free Software Foundation, Inc.
// Edited by Dr. Ogawa Kiyoshi. Compile procedure and results record.
// C++N4910:2022 Standard Working Draft on ISO/IEC 14882(0) sample code compile list
// https://qiita.com/kaizen_nagoya/items/fc957ddddd402004bb91

#include <iostream>
#include <cstdlib> 
#include <cstring>
#include <cassert>
#include <coroutine>

using namespace std;
void f(){
// Example 1 
new auto(1); // allocated type is int
auto x = new auto('a'); // allocated type is char, x is of type char*
template<class T> struct A { A(T, T); };
auto y = new A{1, 2}; // allocated type is A<int>
// [Example 2 :
new int * i; // syntax error: parsed as (new int*) i, not as (new int)*i
// The * is the pointer declarator and not the multiplication operator. 
[Example 3 :
new int(*[10])(); // error
// is ill-formed because the binding is
(new int) (*[10])(); // error
// Instead, the explicitly parenthesized version of the new operator can be used to create objects of compound types (6.8.3):
new (int (*[10])());
// allocates an array of 10 pointers to functions (taking no argument and returning int). 
}
// [Example 5 :
void can_merge(int x) {
// These allocations are safe for merging:
std::unique_ptr<char[]> a{new (std::nothrow) char[8]};
std::unique_ptr<char[]> b{new (std::nothrow) char[8]};
std::unique_ptr<char[]> c{new (std::nothrow) char[x]};
g(a.get(), b.get(), c.get());
}
void cannot_merge(int x) {
std::unique_ptr<char[]> a{new char[8]};
try {
// Merging this allocation would change its catch handler.
std::unique_ptr<char[]> b{new char[x]};
} catch (const std::bad_alloc& e) {
std::cerr << "Allocation failed: " << e.what() << std::endl;
throw;
}
}
// 0 [Example 6 :
(20.1) — new T results in one of the following calls:
operator new(sizeof(T))
operator new(sizeof(T), std::align_val_t(alignof(T)))
(20.2) — new(2,f) T results in one of the following calls:
operator new(sizeof(T), 2, f)
operator new(sizeof(T), std::align_val_t(alignof(T)), 2, f)
(20.3) — new T[5] results in one of the following calls:
operator new[](sizeof(T) * 5 + x)
operator new[](sizeof(T) * 5 + x, std::align_val_t(alignof(T)))
(20.4) — new(2,f) T[5] results in one of the following calls:
operator new[](sizeof(T) * 5 + x, 2, f)
operator new[](sizeof(T) * 5 + x, std::align_val_t(alignof(T)), 2, f)
// Here, each instance of x is a non-negative unspecified value representing array allocation overhead; the result of the new-expression will be offset by this amount from the value returned by operator new[]. This overhead may be applied in all array new-expressions, including those referencing a placement allocation function, except when referencing the library function operator new[](std::size_t, void*). The amount of overhead may vary from one invocation of new to another. 
// [Example 7 :
struct S {
// Placement allocation function:
static void* operator new(std::size_t, std::size_t);
// Usual (non-placement) deallocation function:
static void operator delete(void*, std::size_t);
};
S* p = new (0) S; // error: non-placement deallocation function matches
// placement allocation function
int main() {
  cout  <<  msg << endl;
  return EXIT_SUCCESS;
}
```

## Script

```bash:clgc.sh
#!/bin/sh
rm $1l
rm $1g
echo "$ clang++ $1.cpp -std=03 -o $1l -I. -Wall" 
clang++ $1.cpp -std=c++03 -o $1l -I. -Wall
if [  -e $1l ]; then
./$1l 
fi
rm $1l
echo "$ clang++ $1.cpp -std=2b -o $1l -I. -Wall"
clang++ $1.cpp -std=c++2b -o $1l -I. -Wall
if [  -e $1l ]; then
./$1l
fi
echo "\r"
echo "$ g++ $1.cpp -std=03 -o $1g -I. -Wall"
g++ $1.cpp -std=c++03 -o $1g -I. -Wall
if [ -e $1g ]; then
./$1g
fi
rm $1g
echo "\r"
echo "$ g++ $1.cpp -std=2b -o $1g -I. -Wall"
g++ $1.cpp -std=c++2b -o $1g -I. -Wall
if [ -e $1g ]; then
./$1g 
fi
```
## 編纂・実行結果(compile and go)

```ubuntu:bash
# ./clgc.sh  p132
rm: cannot remove 'p132l': No such file or directory
rm: cannot remove 'p132g': No such file or directory
$ clang++ p132.cpp -std=03 -o p132l -I. -Wall
p132.cpp:21:5: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
new auto(1); // allocated type is int
    ^
p132.cpp:21:5: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
p132.cpp:22:1: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
auto x = new auto('a'); // allocated type is char, x is of type char*
^
p132.cpp:22:14: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
auto x = new auto('a'); // allocated type is char, x is of type char*
             ^
p132.cpp:22:14: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
p132.cpp:23:1: error: expected expression
template<class T> struct A { A(T, T); };
^
p132.cpp:24:1: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
auto y = new A{1, 2}; // allocated type is A<int>
^
p132.cpp:24:14: error: unknown type name 'A'
auto y = new A{1, 2}; // allocated type is A<int>
             ^
p132.cpp:26:10: error: expected ';' after expression
new int * i; // syntax error: parsed as (new int*) i, not as (new int)*i
         ^
         ;
p132.cpp:26:11: error: use of undeclared identifier 'i'
new int * i; // syntax error: parsed as (new int*) i, not as (new int)*i
          ^
p132.cpp:29:10: error: expected expression
new int(*[10])(); // error
         ^
p132.cpp:31:13: error: expected expression
(new int) (*[10])(); // error
            ^
p132.cpp:39:6: error: no member named 'unique_ptr' in namespace 'std'
std::unique_ptr<char[]> a{new (std::nothrow) char[8]};
~~~~~^
p132.cpp:39:21: error: expected '(' for function-style cast or type construction
std::unique_ptr<char[]> a{new (std::nothrow) char[8]};
                ~~~~^
p132.cpp:40:6: error: no member named 'unique_ptr' in namespace 'std'
std::unique_ptr<char[]> b{new (std::nothrow) char[8]};
~~~~~^
p132.cpp:40:21: error: expected '(' for function-style cast or type construction
std::unique_ptr<char[]> b{new (std::nothrow) char[8]};
                ~~~~^
p132.cpp:41:6: error: no member named 'unique_ptr' in namespace 'std'
std::unique_ptr<char[]> c{new (std::nothrow) char[x]};
~~~~~^
p132.cpp:41:21: error: expected '(' for function-style cast or type construction
std::unique_ptr<char[]> c{new (std::nothrow) char[x]};
                ~~~~^
p132.cpp:42:3: error: use of undeclared identifier 'a'
g(a.get(), b.get(), c.get());
  ^
p132.cpp:42:12: error: use of undeclared identifier 'b'
g(a.get(), b.get(), c.get());
           ^
p132.cpp:42:21: error: use of undeclared identifier 'c'
g(a.get(), b.get(), c.get());
                    ^
p132.cpp:45:6: error: no member named 'unique_ptr' in namespace 'std'
std::unique_ptr<char[]> a{new char[8]};
~~~~~^
p132.cpp:45:21: error: expected '(' for function-style cast or type construction
std::unique_ptr<char[]> a{new char[8]};
                ~~~~^
p132.cpp:48:6: error: no member named 'unique_ptr' in namespace 'std'
std::unique_ptr<char[]> b{new char[x]};
~~~~~^
p132.cpp:48:21: error: expected '(' for function-style cast or type construction
std::unique_ptr<char[]> b{new char[x]};
                ~~~~^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
6 warnings and 20 errors generated.
rm: cannot remove 'p132l': No such file or directory
$ clang++ p132.cpp -std=2b -o p132l -I. -Wall
p132.cpp:23:1: error: expected expression
template<class T> struct A { A(T, T); };
^
p132.cpp:24:14: error: unknown type name 'A'
auto y = new A{1, 2}; // allocated type is A<int>
             ^
p132.cpp:26:10: error: expected ';' after expression
new int * i; // syntax error: parsed as (new int*) i, not as (new int)*i
         ^
         ;
p132.cpp:26:11: error: use of undeclared identifier 'i'
new int * i; // syntax error: parsed as (new int*) i, not as (new int)*i
          ^
p132.cpp:29:11: error: expected variable name or 'this' in lambda capture list
new int(*[10])(); // error
          ^
p132.cpp:55:8: error: unexpected character <U+2014>
(20.1) — new T results in one of the following calls:
       ^~
p132.cpp:58:8: error: unexpected character <U+2014>
(20.2) — new(2,f) T results in one of the following calls:
       ^~
p132.cpp:61:8: error: unexpected character <U+2014>
(20.3) — new T[5] results in one of the following calls:
       ^~
p132.cpp:64:8: error: unexpected character <U+2014>
(20.4) — new(2,f) T[5] results in one of the following calls:
       ^~
p132.cpp:75:1: error: unknown type name 'S'
S* p = new (0) S; // error: non-placement deallocation function matches
^
p132.cpp:75:16: error: unknown type name 'S'
S* p = new (0) S; // error: non-placement deallocation function matches
               ^
p132.cpp:77:12: error: function definition is not allowed here
int main() {
           ^
p132.cpp:80:2: error: expected '}'
}
 ^
p132.cpp:19:9: note: to match this '{'
void f(){
        ^
13 errors generated.

$ g++ p132.cpp -std=03 -o p132g -I. -Wall
p132.cpp:55:8: error: extended character — is not valid in an identifier
   55 | (20.1) — new T results in one of the following calls:
      |        ^
p132.cpp:58:8: error: extended character — is not valid in an identifier
   58 | (20.2) — new(2,f) T results in one of the following calls:
      |        ^
p132.cpp:61:8: error: extended character — is not valid in an identifier
   61 | (20.3) — new T[5] results in one of the following calls:
      |        ^
p132.cpp:64:8: error: extended character — is not valid in an identifier
   64 | (20.4) — new(2,f) T[5] results in one of the following calls:
      |        ^
p132.cpp: In function 'void f()':
p132.cpp:21:1: warning: C++11 auto only available with '-std=c++11' or '-std=gnu++11' [-Wc++11-extensions]
   21 | new auto(1); // allocated type is int
      | ^~~
p132.cpp:22:1: warning: 'auto' changes meaning in C++11; please remove it [-Wc++11-compat]
   22 | auto x = new auto('a'); // allocated type is char, x is of type char*
      | ^~~~
      | ----
p132.cpp:22:6: error: 'x' does not name a type
   22 | auto x = new auto('a'); // allocated type is char, x is of type char*
      |      ^
p132.cpp:23:1: error: a template declaration cannot appear at block scope
   23 | template<class T> struct A { A(T, T); };
      | ^~~~~~~~
p132.cpp:24:1: warning: 'auto' changes meaning in C++11; please remove it [-Wc++11-compat]
   24 | auto y = new A{1, 2}; // allocated type is A<int>
      | ^~~~
      | ----
p132.cpp:24:6: error: 'y' does not name a type
   24 | auto y = new A{1, 2}; // allocated type is A<int>
      |      ^
p132.cpp:26:10: error: expected ';' before 'i'
   26 | new int * i; // syntax error: parsed as (new int*) i, not as (new int)*i
      |          ^~
      |          ;
p132.cpp:29:11: error: expected identifier before numeric constant
   29 | new int(*[10])(); // error
      |           ^~
p132.cpp: In lambda function:
p132.cpp:29:14: error: expected '{' before ')' token
   29 | new int(*[10])(); // error
      |              ^
p132.cpp: In function 'void f()':
p132.cpp:29:14: warning: lambda expressions only available with '-std=c++11' or '-std=gnu++11' [-Wc++11-extensions]
p132.cpp:29:14: error: invalid conversion from 'void (*)()' to 'int' [-fpermissive]
   29 | new int(*[10])(); // error
      |              ^
      |              |
      |              void (*)()
p132.cpp:29:15: error: expected ';' before '(' token
   29 | new int(*[10])(); // error
      |               ^
      |               ;
p132.cpp:31:14: error: expected identifier before numeric constant
   31 | (new int) (*[10])(); // error
      |              ^~
p132.cpp: In lambda function:
p132.cpp:31:17: error: expected '{' before ')' token
   31 | (new int) (*[10])(); // error
      |                 ^
p132.cpp: In function 'void f()':
p132.cpp:31:17: warning: lambda expressions only available with '-std=c++11' or '-std=gnu++11' [-Wc++11-extensions]
p132.cpp:31:11: error: expression cannot be used as a function
   31 | (new int) (*[10])(); // error
      | ~~~~~~~~~~^~~~~~~
p132.cpp: In function 'void can_merge(int)':
p132.cpp:39:6: error: 'unique_ptr' is not a member of 'std'
   39 | std::unique_ptr<char[]> a{new (std::nothrow) char[8]};
      |      ^~~~~~~~~~
p132.cpp:39:6: note: 'std::unique_ptr' is only available from C++11 onwards
p132.cpp:39:17: error: expected primary-expression before 'char'
   39 | std::unique_ptr<char[]> a{new (std::nothrow) char[8]};
      |                 ^~~~
p132.cpp:40:6: error: 'unique_ptr' is not a member of 'std'
   40 | std::unique_ptr<char[]> b{new (std::nothrow) char[8]};
      |      ^~~~~~~~~~
p132.cpp:40:6: note: 'std::unique_ptr' is only available from C++11 onwards
p132.cpp:40:17: error: expected primary-expression before 'char'
   40 | std::unique_ptr<char[]> b{new (std::nothrow) char[8]};
      |                 ^~~~
p132.cpp:41:6: error: 'unique_ptr' is not a member of 'std'
   41 | std::unique_ptr<char[]> c{new (std::nothrow) char[x]};
      |      ^~~~~~~~~~
p132.cpp:41:6: note: 'std::unique_ptr' is only available from C++11 onwards
p132.cpp:41:17: error: expected primary-expression before 'char'
   41 | std::unique_ptr<char[]> c{new (std::nothrow) char[x]};
      |                 ^~~~
p132.cpp:42:3: error: 'a' was not declared in this scope
   42 | g(a.get(), b.get(), c.get());
      |   ^
p132.cpp:42:12: error: 'b' was not declared in this scope
   42 | g(a.get(), b.get(), c.get());
      |            ^
p132.cpp:42:21: error: 'c' was not declared in this scope
   42 | g(a.get(), b.get(), c.get());
      |                     ^
p132.cpp:42:1: error: 'g' was not declared in this scope
   42 | g(a.get(), b.get(), c.get());
      | ^
p132.cpp: In function 'void cannot_merge(int)':
p132.cpp:45:6: error: 'unique_ptr' is not a member of 'std'
   45 | std::unique_ptr<char[]> a{new char[8]};
      |      ^~~~~~~~~~
p132.cpp:45:6: note: 'std::unique_ptr' is only available from C++11 onwards
p132.cpp:45:17: error: expected primary-expression before 'char'
   45 | std::unique_ptr<char[]> a{new char[8]};
      |                 ^~~~
p132.cpp:48:6: error: 'unique_ptr' is not a member of 'std'
   48 | std::unique_ptr<char[]> b{new char[x]};
      |      ^~~~~~~~~~
p132.cpp:48:6: note: 'std::unique_ptr' is only available from C++11 onwards
p132.cpp:48:17: error: expected primary-expression before 'char'
   48 | std::unique_ptr<char[]> b{new char[x]};
      |                 ^~~~
p132.cpp: At global scope:
p132.cpp:55:2: error: expected unqualified-id before numeric constant
   55 | (20.1) — new T results in one of the following calls:
      |  ^~~~
p132.cpp:55:2: error: expected ')' before numeric constant
   55 | (20.1) — new T results in one of the following calls:
      | ~^~~~
      |  )
p132.cpp:75:1: error: 'S' does not name a type
   75 | S* p = new (0) S; // error: non-placement deallocation function matches
      | ^
rm: cannot remove 'p132g': No such file or directory

$ g++ p132.cpp -std=2b -o p132g -I. -Wall
p132.cpp:55:8: error: extended character — is not valid in an identifier
   55 | (20.1) — new T results in one of the following calls:
      |        ^
p132.cpp:58:8: error: extended character — is not valid in an identifier
   58 | (20.2) — new(2,f) T results in one of the following calls:
      |        ^
p132.cpp:61:8: error: extended character — is not valid in an identifier
   61 | (20.3) — new T[5] results in one of the following calls:
      |        ^
p132.cpp:64:8: error: extended character — is not valid in an identifier
   64 | (20.4) — new(2,f) T[5] results in one of the following calls:
      |        ^
p132.cpp: In function 'void f()':
p132.cpp:23:1: error: a template declaration cannot appear at block scope
   23 | template<class T> struct A { A(T, T); };
      | ^~~~~~~~
p132.cpp:24:14: error: 'A' does not name a type
   24 | auto y = new A{1, 2}; // allocated type is A<int>
      |              ^
p132.cpp:26:10: error: expected ';' before 'i'
   26 | new int * i; // syntax error: parsed as (new int*) i, not as (new int)*i
      |          ^~
      |          ;
p132.cpp:29:11: error: expected identifier before numeric constant
   29 | new int(*[10])(); // error
      |           ^~
p132.cpp: In lambda function:
p132.cpp:29:14: error: expected '{' before ')' token
   29 | new int(*[10])(); // error
      |              ^
p132.cpp: In function 'void f()':
p132.cpp:29:14: error: invalid conversion from 'void (*)()' to 'int' [-fpermissive]
   29 | new int(*[10])(); // error
      |              ^
      |              |
      |              void (*)()
p132.cpp:29:15: error: expected ';' before '(' token
   29 | new int(*[10])(); // error
      |               ^
      |               ;
p132.cpp:31:14: error: expected identifier before numeric constant
   31 | (new int) (*[10])(); // error
      |              ^~
p132.cpp: In lambda function:
p132.cpp:31:17: error: expected '{' before ')' token
   31 | (new int) (*[10])(); // error
      |                 ^
p132.cpp: In function 'void f()':
p132.cpp:31:11: error: expression cannot be used as a function
   31 | (new int) (*[10])(); // error
      | ~~~~~~~~~~^~~~~~~
p132.cpp:22:6: warning: unused variable 'x' [-Wunused-variable]
   22 | auto x = new auto('a'); // allocated type is char, x is of type char*
      |      ^
p132.cpp: In function 'void can_merge(int)':
p132.cpp:42:1: error: 'g' was not declared in this scope
   42 | g(a.get(), b.get(), c.get());
      | ^
p132.cpp: At global scope:
p132.cpp:55:2: error: expected unqualified-id before numeric constant
   55 | (20.1) — new T results in one of the following calls:
      |  ^~~~
p132.cpp:55:2: error: expected ')' before numeric constant
   55 | (20.1) — new T results in one of the following calls:
      | ~^~~~
      |  )
p132.cpp:75:1: error: 'S' does not name a type
   75 | S* p = new (0) S; // error: non-placement deallocation function matches
      | ^

```

## 検討事項(agenda)
コンパイルエラーの理由を解説する。

<|--コンパイルエラーを取るか、コンパイルエラーの理由を解説する。-->

# 参考資料(reference)

typedef は C++11 ではオワコン

https://qiita.com/Linda_pp/items/44a67c64c14cba00eef1

C99からC++14を駆け抜けるC++講座

https://qiita.com/yumetodo/items/e49a673afd9a3ecb81a8

## 自己参照(self reference)

C++ Error Message Collection(1)does not name a type, 11 articles

https://qiita.com/kaizen_nagoya/items/acb9f1a9b5aad6df06bd

dockerにclang

https://qiita.com/kaizen_nagoya/items/8829ffeee397eda50e80

docker gnu(gcc/g++) and llvm(clang/clang++)

https://qiita.com/drafts/059874ea39c4de64c0f7

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

Compare the contents of C++N4910:2022, C++N4741:2018 and C++N4606:2015

https://qiita.com/kaizen_nagoya/items/483246d40f98abff7ded

C++ sample list

https://qiita.com/kaizen_nagoya/items/54ad75b73825b7c04f86


clang++, g++コンパイルエラー方針の違いの例

https://qiita.com/kaizen_nagoya/items/ea6e5009fe126d270a82


C++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

C++2003とC++2017でコンパイルエラーになるならない事例集
https://qiita.com/kaizen_nagoya/items/a13ea3823441c430edff

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

cpprefjpのdecltypeをコンパイル試験
https://qiita.com/kaizen_nagoya/items/090909af702f0d5d8a67

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


 ＜この記事は個人の過去の経験に基づく個人の感想です。現在所属する組織、業務とは関係がありません。＞

# 文書履歴(document history)
ver. 0.01 初稿 　20220623