Autosar Guidelines C++14, example code compile list(115)Rule A14-7-1  A type used as a template argument shall provide all members that are used by the template.

Guidelines for the use of the C++14 language in critical and
safety-related systems Sample code compile list(115)
https://www.autosar.org/fileadmin/user_upload/standards/adaptive/17-03/AUTOSAR_RS_CPP14Guidelines.pdf
Autosar Guidelines C++14, example code compile list will be listed.
#目的(purpose)
AutosarのC++ GuidelineをOS, 制御のプログラムで利用するにあたって、以下を検討する。
(1)hosted, freestandingのどちらを基本にすべきか。(2)C++2014,C++2017, C++202aのどれを用いると良いか。
(3)どの処理系を併用すると良いか。
-std=c++14, -std=c++17, -std=c++2aの3種類で、複数のコンパイラでコンパイルすることにより、誤(error)、警告(warning)、関数・変数連携(link)、出力(output)、にどのような影響があるかを確認する。
#成果(outcome)
複数の処理系の特徴が明確になる。
各標準段階の違いを明確にする。
hostedまたはfreestandingの特徴と課題を明確にする。


#A14-7-1.cpp
##算譜(source code)

```c++:A14-7-1.cpp
//Guidelines for the use of the C++14 language in critical and safety-related systems
const char* msg="Rule A14-7-1 (required, implementation, automated) A type used as a template argument shall provide all members that are used by the template.(115)A14-7-1.cpp";
//https://www.autosar.org/fileadmin/user_upload/standards/adaptive/17-03/AUTOSAR_RS_CPP14Guidelines.pdf
// There is no description about Autosar declear hosted or freestanding.
// If the Autosar intended both depending on the cases, autosar.h can choose one.
// Compile with -DHOSTED work as  hosted environment, -DFREESTANDING work as freestanding.

#include "autosar.h"/// @line add header file https://qiita.com/kaizen_nagoya/items/4bde8f21ab059b96cf2a

using namespace std;/// @line add using

/// @ start AUTOSAR: From here to the "///end AUTOSAR" are from the AUTOSAR code without some code having /// comment in line.
// $Id: A14-7-1.cpp 271696 2017-03-23 09:23:09Z piotr.tanski $
#include <cstdint>
class A
{
public:
  void setProperty(std::int32_t x) noexcept {
    property = x;
  }
  void doSomething() noexcept {}

private:
  std::int32_t property;
};
struct B
{
};
class C
{
public:
  void doSomething() noexcept {}
};
template <typename T>
class D
{
public:
  void f1() {
    cout<<"D:f1()"<<endl;
  }/// @ {} add output
  void f2()
  {
    T t;
    t.setProperty(0);
    cout<<"D:f2()"<<endl;/// @ line for output
  }
  void f3()
  {
    T t;
    t.doSomething();
    cout<<"D:f3()"<<endl;/// @ line for output
  }
};

void fn() noexcept
{
  D<A> d1; // Compliant - struct A provides all needed members
  d1.f1();
  d1.f2();
  d1.f3();

  D<B> d2; // Non-compliant - struct B does not provide needed members
  d2.f1();
// d2.f2(); // Compilation error - no ’property’ in struct B
// d2.f3(); // Compilation error - no member named ’doSomething’ in struct
// B

  D<C> d3; // Non-compliant - struct C does not provide property
  d3.f1();
// d3.f2(); // Compilation error - no property in struct C
  d3.f3();
}
/// @ end AUTOSAR
int start() { /// @{} for start
  fn();
  cout<< msg << endl;
  ShutdownOS()  EXIT_SUCCESS;
/// Autosar OS 3.1.1, 2009: 7.1.2.2 Undefined Behaviour in OSEK OS
/// OS425 If ShutdownOS is called and ShutdownHook() returns then the operating system shall disable all interrupts and enter an endless loop.
}
```
##編纂・実行結果(compile and go)

```shell-session:cpa.sh
$ ../cpa.sh a14-7-1
$ clang++ a14-7-1.cpp -I./ -std=c++14 -Wall
D:f1()
D:f2()
D:f3()
D:f1()
D:f1()
D:f3()
Rule A14-7-1 (required, implementation, automated) A type used as a template argument shall provide all members that are used by the template.(115)A14-7-1.cpp
$ clang++ a14-7-1.cpp  -I./ -std=c++17 -Wall
D:f1()
D:f2()
D:f3()
D:f1()
D:f1()
D:f3()
Rule A14-7-1 (required, implementation, automated) A type used as a template argument shall provide all members that are used by the template.(115)A14-7-1.cpp
$ clang++ a14-7-1.cpp  -I./ -std=c++2a -Wall
D:f1()
D:f2()
D:f3()
D:f1()
D:f1()
D:f3()
Rule A14-7-1 (required, implementation, automated) A type used as a template argument shall provide all members that are used by the template.(115)A14-7-1.cpp

$ g++-8 a14-7-1.cpp  -I./ -std=c++14  -Wall
D:f1()
D:f2()
D:f3()
D:f1()
D:f1()
D:f3()
Rule A14-7-1 (required, implementation, automated) A type used as a template argument shall provide all members that are used by the template.(115)A14-7-1.cpp
$ g++-8 a14-7-1.cpp  -I./ -std=c++17  -Wall
D:f1()
D:f2()
D:f3()
D:f1()
D:f1()
D:f3()
Rule A14-7-1 (required, implementation, automated) A type used as a template argument shall provide all members that are used by the template.(115)A14-7-1.cpp
$ g++-8 a14-7-1.cpp  -I./ -std=c++2a  -Wall
D:f1()
D:f2()
D:f3()
D:f1()
D:f1()
D:f3()
Rule A14-7-1 (required, implementation, automated) A type used as a template argument shall provide all members that are used by the template.(115)A14-7-1.cpp
```

#検討事項(agenda)
###1. 自律(freestanding)環境. 接待(hosted)環境

C++N4606 1.4 Implementation compliance p.4

###2. 対応OSの水準、対応通信規約、応用機能による分類
freestanding用の関数、ライブラリ等
###3. C++2014, C++2017, C++202aの比較項目
本件なし
###4. clang++, g++の比較検討項目
本件なし

###5. 役立つまたは意味のある出力

#参考文献(reference)
###C++N4741 2018
Working Draft, Standard for Programming Language C++
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/n4741.pdf

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

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

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

#文書履歴
ver 0.10 初稿 20180612