9.5.4 Coroutine definitions [dcl.fct.def.coroutine] C++N4910:2022 (110) p220.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.

# 9.5.4 Coroutine definitions [dcl.fct.def.coroutine] C++N4910:2022 (108) p220.cpp

## 算譜(source code)

```c++:p220.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 * n4910 = "9.5.4 Coroutine definitions [dcl.fct.def.coroutine] C++N4910:2022 (108) p220.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 <cstdio>
#include <cstdlib>
#include <cstring>
#include <cassert>
#include <coroutine>
#include <vector>
#include <complex>
#include <map>
#include <cmath>
#include <thread>
#include <future>
#include <functional>
#include <coroutine>

using namespace std;

// Example 1
task<int> f();
task<void> g1() {
    int i = co_await f();
    std::cout << "f() => " << i << std::endl;
}
template <typename... Args>
task<void> g2(Args&&...) { // OK, ellipsis is a pack expansion
    int i = co_await f();
    std::cout << "f() => " << i << std::endl;
}
task<void> g3(int a, ...) { // error: variable parameter list not allowed
    int i = co_await f();
    std::cout << "f() => " << i << std::endl;
}
// A coroutine behaves as if its function-body were replaced by:
// {
// promise-type promise promise-constructor-arguments ;
// try {
//co_await promise .initial_suspend() ;
// function-body
// } catch ( ... ) {
// if (!initial-await-resume-called )
// throw ;
// promise .unhandled_exception() ;
//}
// final-suspend :
// co_await promise .final_suspend() ;
// }
// [Example 2 :
// #include <iostream>
// #include <coroutine>
// ::operator new(size_t, nothrow_t) will be used if allocation is needed
struct generator {
    struct promise_type;
    using handle = std::coroutine_handle<promise_type>;
    struct promise_type {
        int current_value;
        static auto get_return_object_on_allocation_failure() {
            return generator{nullptr};
        }
        auto get_return_object() {
            return generator{handle::from_promise(*this)};
        }
        auto initial_suspend() {
            return std::suspend_always{};
        }
        auto final_suspend() noexcept {
            return std::suspend_always{};
        }
        void unhandled_exception() {
            std::terminate();
        }
        void return_void() {}
        auto yield_value(int value) {
            current_value = value;
            return std::suspend_always{};
        }
    };
    bool move_next() {
        return coro ? (coro.resume(), !coro.done()) : false;
    }
    int current_value() {
        return coro.promise().current_value;
    }
    generator(generator const&) = delete;
    generator(generator && rhs) : coro(rhs.coro) {
        rhs.coro = nullptr;
    }
    ~generator() {
        if (coro) coro.destroy();
    }
private:
    generator(handle h) : coro(h) {}
    handle coro;
};
generator f() {
    co_yield 1;
    co_yield 2;
}
int main() {
    auto g = f();
    while (g.move_next()) std::cout << g.current_value() << std::endl;
// }
// int main(){
    cout  <<  n4910 << 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  p220
rm: cannot remove 'p220l': No such file or directory
rm: cannot remove 'p220g': No such file or directory
$ clang++ p220.cpp -std=03 -o p220l -I. -Wall
In file included from p220.cpp:20:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:35:
/usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/c++0x_warning.h:32:2: error: This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
#error This file requires compiler and library support \
 ^
p220.cpp:28:1: error: no template named 'task'
task<int> f();
^
p220.cpp:29:1: error: no template named 'task'
task<void> g1() {
^
p220.cpp:30:9: error: use of undeclared identifier 'co_await'
int i = co_await f();
        ^
p220.cpp:30:17: error: expected ';' at end of declaration
int i = co_await f();
                ^
                ;
p220.cpp:33:19: warning: variadic templates are a C++11 extension [-Wc++11-extensions]
template <typename... Args>
                  ^
p220.cpp:34:1: error: no template named 'task'
task<void> g2(Args&&...) { // OK, ellipsis is a pack expansion
^
p220.cpp:34:19: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
task<void> g2(Args&&...) { // OK, ellipsis is a pack expansion
                  ^
p220.cpp:35:9: error: use of undeclared identifier 'co_await'
int i = co_await f();
        ^
p220.cpp:35:17: error: expected ';' at end of declaration
int i = co_await f();
                ^
                ;
p220.cpp:38:1: error: no template named 'task'
task<void> g3(int a, ...) { // error: variable parameter list not allowed
^
p220.cpp:39:9: error: use of undeclared identifier 'co_await'
int i = co_await f();
        ^
p220.cpp:39:17: error: expected ';' at end of declaration
int i = co_await f();
                ^
                ;
p220.cpp:62:16: warning: alias declarations are a C++11 extension [-Wc++11-extensions]
using handle = std::coroutine_handle<promise_type>;
               ^
p220.cpp:62:21: error: no template named 'coroutine_handle' in namespace 'std'
using handle = std::coroutine_handle<promise_type>;
               ~~~~~^
p220.cpp:65:8: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
static auto get_return_object_on_allocation_failure() { return generator{nullptr}; }
       ^
p220.cpp:65:8: error: 'auto' not allowed in function return type
static auto get_return_object_on_allocation_failure() { return generator{nullptr}; }
       ^~~~
p220.cpp:66:1: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
auto get_return_object() { return generator{handle::from_promise(*this)}; }
^
p220.cpp:66:1: error: 'auto' not allowed in function return type
auto get_return_object() { return generator{handle::from_promise(*this)}; }
^~~~
p220.cpp:67:1: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
auto initial_suspend() { return std::suspend_always{}; }
^
p220.cpp:67:1: error: 'auto' not allowed in function return type
auto initial_suspend() { return std::suspend_always{}; }
^~~~
p220.cpp:68:1: warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]
auto final_suspend() noexcept { return std::suspend_always{}; }
^
p220.cpp:68:1: error: 'auto' not allowed in function return type
auto final_suspend() noexcept { return std::suspend_always{}; }
^~~~
p220.cpp:68:21: error: expected ';' at end of declaration list
auto final_suspend() noexcept { return std::suspend_always{}; }
                    ^
                    ;
p220.cpp:78:31: warning: deleted function definitions are a C++11 extension [-Wc++11-extensions]
generator(generator const&) = delete;
                              ^
p220.cpp:79:21: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
generator(generator && rhs) : coro(rhs.coro) { rhs.coro = nullptr; }
                    ^
p220.cpp:82:11: error: unknown type name 'handle'
generator(handle h) : coro(h) {}
          ^
p220.cpp:83:1: error: unknown type name 'handle'
handle coro;
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
9 warnings and 20 errors generated.
rm: cannot remove 'p220l': No such file or directory
$ clang++ p220.cpp -std=2b -o p220l -I. -Wall
p220.cpp:28:1: error: no template named 'task'
task<int> f();
^
p220.cpp:29:1: error: no template named 'task'
task<void> g1() {
^
p220.cpp:34:1: error: no template named 'task'
task<void> g2(Args&&...) { // OK, ellipsis is a pack expansion
^
p220.cpp:38:1: error: no template named 'task'
task<void> g3(int a, ...) { // error: variable parameter list not allowed
^
4 errors generated.

$ g++ p220.cpp -std=03 -o p220g -I. -Wall
In file included from /usr/local/include/c++/12.1.0/thread:35,
                 from p220.cpp:20:
/usr/local/include/c++/12.1.0/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
   32 | #error This file requires compiler and library support \
      |  ^~~~~
p220.cpp:65:74: warning: identifier 'nullptr' is a keyword in C++11 [-Wc++11-compat]
   65 | static auto get_return_object_on_allocation_failure() { return generator{nullptr}; }
      |                                                                          ^~~~~~~
p220.cpp:68:22: warning: identifier 'noexcept' is a keyword in C++11 [-Wc++11-compat]
   68 | auto final_suspend() noexcept { return std::suspend_always{}; }
      |                      ^~~~~~~~
p220.cpp:28:1: error: 'task' does not name a type
   28 | task<int> f();
      | ^~~~
p220.cpp:29:1: error: 'task' does not name a type
   29 | task<void> g1() {
      | ^~~~
p220.cpp:33:19: warning: variadic templates only available with '-std=c++11' or '-std=gnu++11' [-Wc++11-extensions]
   33 | template <typename... Args>
      |                   ^~~
p220.cpp:34:1: error: 'task' does not name a type
   34 | task<void> g2(Args&&...) { // OK, ellipsis is a pack expansion
      | ^~~~
p220.cpp:38:1: error: 'task' does not name a type
   38 | task<void> g3(int a, ...) { // error: variable parameter list not allowed
      | ^~~~
p220.cpp:62:7: error: expected nested-name-specifier before 'handle'
   62 | using handle = std::coroutine_handle<promise_type>;
      |       ^~~~~~
p220.cpp:65:8: warning: 'auto' changes meaning in C++11; please remove it [-Wc++11-compat]
   65 | static auto get_return_object_on_allocation_failure() { return generator{nullptr}; }
      |        ^~~~
      |        ----
p220.cpp:65:1: error: conflicting specifiers in declaration of 'get_return_object_on_allocation_failure'
   65 | static auto get_return_object_on_allocation_failure() { return generator{nullptr}; }
      | ^~~~~~
p220.cpp:66:1: warning: 'auto' changes meaning in C++11; please remove it [-Wc++11-compat]
   66 | auto get_return_object() { return generator{handle::from_promise(*this)}; }
      | ^~~~
      | ----
p220.cpp:66:6: error: ISO C++ forbids declaration of 'get_return_object' with no type [-fpermissive]
   66 | auto get_return_object() { return generator{handle::from_promise(*this)}; }
      |      ^~~~~~~~~~~~~~~~~
p220.cpp:66:1: error: storage class specified for 'get_return_object'
   66 | auto get_return_object() { return generator{handle::from_promise(*this)}; }
      | ^~~~
p220.cpp:67:1: warning: 'auto' changes meaning in C++11; please remove it [-Wc++11-compat]
   67 | auto initial_suspend() { return std::suspend_always{}; }
      | ^~~~
      | ----
p220.cpp:67:6: error: ISO C++ forbids declaration of 'initial_suspend' with no type [-fpermissive]
   67 | auto initial_suspend() { return std::suspend_always{}; }
      |      ^~~~~~~~~~~~~~~
p220.cpp:67:1: error: storage class specified for 'initial_suspend'
   67 | auto initial_suspend() { return std::suspend_always{}; }
      | ^~~~
p220.cpp:68:1: warning: 'auto' changes meaning in C++11; please remove it [-Wc++11-compat]
   68 | auto final_suspend() noexcept { return std::suspend_always{}; }
      | ^~~~
      | ----
p220.cpp:68:6: error: ISO C++ forbids declaration of 'final_suspend' with no type [-fpermissive]
   68 | auto final_suspend() noexcept { return std::suspend_always{}; }
      |      ^~~~~~~~~~~~~
p220.cpp:68:1: error: storage class specified for 'final_suspend'
   68 | auto final_suspend() noexcept { return std::suspend_always{}; }
      | ^~~~
p220.cpp:68:20: error: expected ';' at end of member declaration
   68 | auto final_suspend() noexcept { return std::suspend_always{}; }
      |                    ^
      |                     ;
p220.cpp:68:22: error: 'noexcept' does not name a type
   68 | auto final_suspend() noexcept { return std::suspend_always{}; }
      |                      ^~~~~~~~
p220.cpp:68:22: note: C++11 'noexcept' only available with '-std=c++11' or '-std=gnu++11'
p220.cpp:71:1: warning: 'auto' changes meaning in C++11; please remove it [-Wc++11-compat]
   71 | auto yield_value(int value) {
      | ^~~~
      | ----
p220.cpp:71:6: error: ISO C++ forbids declaration of 'yield_value' with no type [-fpermissive]
   71 | auto yield_value(int value) {
      |      ^~~~~~~~~~~
p220.cpp:71:1: error: storage class specified for 'yield_value'
   71 | auto yield_value(int value) {
      | ^~~~
p220.cpp:78:31: warning: defaulted and deleted functions only available with '-std=c++11' or '-std=gnu++11' [-Wc++11-extensions]
   78 | generator(generator const&) = delete;
      |                               ^~~~~~
p220.cpp:79:21: error: expected ',' or '...' before '&&' token
   79 | generator(generator && rhs) : coro(rhs.coro) { rhs.coro = nullptr; }
      |                     ^~
p220.cpp:79:1: error: invalid constructor; you probably meant 'generator (const generator&)'
   79 | generator(generator && rhs) : coro(rhs.coro) { rhs.coro = nullptr; }
      | ^~~~~~~~~
p220.cpp:82:17: error: expected ')' before 'h'
   82 | generator(handle h) : coro(h) {}
      |          ~      ^~
      |                 )
p220.cpp:83:1: error: 'handle' does not name a type
   83 | handle coro;
      | ^~~~~~
p220.cpp: In member function 'int generator::promise_type::get_return_object()':
p220.cpp:66:44: warning: extended initializer lists only available with '-std=c++11' or '-std=gnu++11' [-Wc++11-extensions]
   66 | auto get_return_object() { return generator{handle::from_promise(*this)}; }
      |                                            ^
p220.cpp:66:45: error: 'handle' was not declared in this scope
   66 | auto get_return_object() { return generator{handle::from_promise(*this)}; }
      |                                             ^~~~~~
p220.cpp:66:44: error: expected primary-expression before '{' token
   66 | auto get_return_object() { return generator{handle::from_promise(*this)}; }
      |                                            ^
p220.cpp:66:44: error: expected ';' before '{' token
p220.cpp:66:45: error: 'handle' is not a class or namespace
   66 | auto get_return_object() { return generator{handle::from_promise(*this)}; }
      |                                             ^~~~~~
p220.cpp: In member function 'int generator::promise_type::initial_suspend()':
p220.cpp:67:38: error: 'suspend_always' is not a member of 'std'
   67 | auto initial_suspend() { return std::suspend_always{}; }
      |                                      ^~~~~~~~~~~~~~
p220.cpp:67:52: error: expected ';' before '{' token
   67 | auto initial_suspend() { return std::suspend_always{}; }
      |                                                    ^
p220.cpp: In member function 'int generator::promise_type::yield_value(int)':
p220.cpp:73:13: error: 'suspend_always' is not a member of 'std'
   73 | return std::suspend_always{};
      |             ^~~~~~~~~~~~~~
p220.cpp:73:27: error: expected ';' before '{' token
   73 | return std::suspend_always{};
      |                           ^
p220.cpp: In member function 'bool generator::move_next()':
p220.cpp:76:27: error: 'coro' was not declared in this scope
   76 | bool move_next() { return coro ? (coro.resume(), !coro.done()) : false; }
      |                           ^~~~
p220.cpp: In member function 'int generator::current_value()':
p220.cpp:77:30: error: 'coro' was not declared in this scope
   77 | int current_value() { return coro.promise().current_value; }
      |                              ^~~~
p220.cpp: In destructor 'generator::~generator()':
p220.cpp:80:20: error: 'coro' was not declared in this scope
   80 | ~generator() { if (coro) coro.destroy(); }
      |                    ^~~~
p220.cpp: In function 'generator f()':
p220.cpp:85:17: error: 'co_yield' was not declared in this scope; did you mean 'sched_yield'?
   85 | generator f() { co_yield 1; co_yield 2; }
      |                 ^~~~~~~~
      |                 sched_yield
p220.cpp:85:37: error: expected ';' before numeric constant
   85 | generator f() { co_yield 1; co_yield 2; }
      |                                     ^~
      |                                     ;
p220.cpp:85:41: warning: no return statement in function returning non-void [-Wreturn-type]
   85 | generator f() { co_yield 1; co_yield 2; }
      |                                         ^
p220.cpp: In function 'int main()':
p220.cpp:87:1: warning: 'auto' changes meaning in C++11; please remove it [-Wc++11-compat]
   87 | auto g = f();
      | ^~~~
      | ----
p220.cpp:87:6: error: 'g' does not name a type
   87 | auto g = f();
      |      ^
p220.cpp:88:8: error: 'g' was not declared in this scope
   88 | while (g.move_next()) std::cout << g.current_value() << std::endl;
      |        ^
rm: cannot remove 'p220g': No such file or directory

$ g++ p220.cpp -std=2b -o p220g -I. -Wall
p220.cpp:28:1: error: 'task' does not name a type
   28 | task<int> f();
      | ^~~~
p220.cpp:29:1: error: 'task' does not name a type
   29 | task<void> g1() {
      | ^~~~
p220.cpp:34:1: error: 'task' does not name a type
   34 | task<void> g2(Args&&...) { // OK, ellipsis is a pack expansion
      | ^~~~
p220.cpp:38:1: error: 'task' does not name a type
   38 | task<void> g3(int a, ...) { // error: variable parameter list not allowed
      | ^~~~
```

## 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 　20220626