Autosar Guidelines C++14, example code compile list(142)Rule A15-5-3 The std::terminate() function

Guidelines for the use of the C++14 language in critical and
safety-related systems Sample code compile list(142)
https://www.autosar.org/fileadmin/user_upload/standards/adaptive/17-03/AUTOSAR_RS_CPP14Guidelines.pdf

Autosar Guidelines C++14 example code compile list
https://qiita.com/kaizen_nagoya/items/8ccbf6675c3494d57a76
#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。


#A15-5-3.cpp
##算譜(source code)

```c++:A15-5-3.cpp
//Guidelines for the use of the C++14 language in critical and safety-related systems
const char* msg="Rule A15-5-3 (required, implementation, automated) The std::terminate() function shall not be called implicitly.(142)A15-5-3.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: A15-5-3.cpp 271752 2017-03-23 12:07:07Z piotr.tanski $
#include <stdexcept>
#include <thread>
extern bool f1();
class A
{
public:
  A() noexcept(false)
  {
// ...
    throw std::runtime_error("Error1");
  }
  ~A()
  {
// ...
    throw std::runtime_error("Error2"); // Non-compliant - std::terminate()
// called on throwing an exception
// from noexcept(true) destructor
  }
};
class B
{
public:
  ~B() noexcept(false)
  {
// ...
    throw std::runtime_error("Error3");
  }
};
void f2()
{
  throw;
}
void threadFunc()
{
  A a; // Throws an exception from a’s constructor and does not handle it in
// thread_func()
}
void f3()
{
  try
  {
    std::thread t(&threadFunc); // Non-compliant - std::terminate() called
// on throwing an exception from
// thread_func()

    if (f1())
    {
      throw std::logic_error("Error4");
    }

    else
    {
      f2(); // Non-compliant - std::terminate() called if there is no
// active exception to be re-thrown by f2
    }
  }
  catch (...)
  {
    B b; // Non-compliant - std::terminate() called on throwing an
// exception from b’s destructor during exception handling

// ...
    f2();
  }
}
static A a; // Non-compliant - std::terminate() called on throwing an exception
// during program’s start-up phase
int main(int, char**)
{
  f3(); // Non-compliant - std::terminate() called if std::logic_error is
// thrown
/// return 0;/// @ comment for output
/// }/// @ comment for output
/// @ end AUTOSAR
///int start() { /// @{} for start
  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.
}
```

```c++:a15-5-3a.cpp
#include "autosar.h"/// @line add header file https://qiita.com/kaizen_nagoya/items/4bde8f21ab059b96cf2a

using namespace std;/// @line add using

bool f1() {
  cout<<"f1()"<<endl;
  return true;
}
```

##編纂・実行結果(compile and go)

```shell-session:cpa.sh
$ ../cpa2.sh a15-5-3 a15-5-3a
$ clang++ a15-5-3.cpp a15-5-3a.cpp  -std=c++14 -Wall
a15-5-3.cpp:28:2: warning: '~A' has a non-throwing exception specification but can still throw [-Wexceptions]
 throw std::runtime_error("Error2"); // Non-compliant - std::terminate()
 ^
a15-5-3.cpp:25:2: note: destructor has a implicit non-throwing exception specification
 ~A()
 ^
1 warning generated.
libc++abi.dylib: terminating with uncaught exception of type std::runtime_error: Error1
../cpa2.sh: line 7: 69286 Abort trap: 6           ./$1l14 $2
$ clang++ a15-5-3.cpp  a15-5-3a.cpp  -std=c++17 -Wall
a15-5-3.cpp:28:2: warning: '~A' has a non-throwing exception specification but can still throw [-Wexceptions]
 throw std::runtime_error("Error2"); // Non-compliant - std::terminate()
 ^
a15-5-3.cpp:25:2: note: destructor has a implicit non-throwing exception specification
 ~A()
 ^
1 warning generated.
libc++abi.dylib: terminating with uncaught exception of type std::runtime_error: Error1
../cpa2.sh: line 13: 69292 Abort trap: 6           ./$1l17 $2
$ clang++ a15-5-3.cpp  a15-5-3a.cpp  -std=c++2a -Wall
a15-5-3.cpp:28:2: warning: '~A' has a non-throwing exception specification but can still throw [-Wexceptions]
 throw std::runtime_error("Error2"); // Non-compliant - std::terminate()
 ^
a15-5-3.cpp:25:2: note: destructor has a implicit non-throwing exception specification
 ~A()
 ^
1 warning generated.
libc++abi.dylib: terminating with uncaught exception of type std::runtime_error: Error1
../cpa2.sh: line 19: 69298 Abort trap: 6           ./$1l2a $2

$ g++-8 a15-5-3.cpp a15-5-3a.cpp  -std=c++14  -Wall
a15-5-3.cpp: In destructor 'A::~A()':
a15-5-3.cpp:28:35: warning: throw will always call terminate() [-Wterminate]
  throw std::runtime_error("Error2"); // Non-compliant - std::terminate()
                                   ^
a15-5-3.cpp:28:35: note: in C++11 destructors default to noexcept
terminate called after throwing an instance of 'std::runtime_error'
  what():  Error1
../cpa2.sh: line 26: 69313 Abort trap: 6           ./$1g14 $2
$ g++-8 a15-5-3.cpp a15-5-3a.cppp -std=c++17  -Wall
a15-5-3.cpp: In destructor 'A::~A()':
a15-5-3.cpp:28:35: warning: throw will always call terminate() [-Wterminate]
  throw std::runtime_error("Error2"); // Non-compliant - std::terminate()
                                   ^
a15-5-3.cpp:28:35: note: in C++11 destructors default to noexcept
terminate called after throwing an instance of 'std::runtime_error'
  what():  Error1
../cpa2.sh: line 32: 69328 Abort trap: 6           ./$1g17 $2
$ g++-8 a15-5-3.cpp a15-5-3a.cppp -std=c++2a  -Wall
a15-5-3.cpp: In destructor 'A::~A()':
a15-5-3.cpp:28:35: warning: throw will always call terminate() [-Wterminate]
  throw std::runtime_error("Error2"); // Non-compliant - std::terminate()
                                   ^
a15-5-3.cpp:28:35: note: in C++11 destructors default to noexcept
terminate called after throwing an instance of 'std::runtime_error'
  what():  Error1
../cpa2.sh: line 38: 69343 Abort trap: 6           ./$1g2a $2
```
#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/2018/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(document history)
ver 0.10 初稿 20180612
ver 0.11 一覧追記 20180613