Guidelines for the use of the C++14 language in critical and
safety-related systems Sample code compile list(19)
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、(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を検討するため、-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とともに、各標準段階, hosted, freestandingの特徴と課題を明確にする。
A2-14-1.cpp
算譜(source code)
//Guidelines for the use of the C++14 language in critical and safety-related systems
const char* msg= "Rule A2-14-1 (required, implementation, automated)Only those escape sequences that are defined in ISO/IEC 14882:2014 shallbe used.(19)A2-14-1.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.
/// Comment: This rule is for last section.
///start AUTOSAR: From here to the "///end AUTOSAR" is from AUTOSAR without code having /// comment in line.
//% $Id: A2-14-1.cpp 266557 2017-02-07 13:08:19Z piotr.tanski $
#include "autosar.h"/// @line add header file https://qiita.com/kaizen_nagoya/items/4bde8f21ab059b96cf2a
#include <cstdint>
using namespace std;/// @line add using
void f()
{
const std::string a = "\k"; // Non-compliant
const std::string b = "\n"; // Compliant
const std::string c = "\U0001f34c"; // Compliant
}
///end AUTOSAR
int start() { /// @{} for start
void f();
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)
$ ../cpa.sh a2-14-1
$ clang++ a2-14-1.cpp -std=c++14 -Wall
a2-14-1.cpp:19:25: warning: unknown escape sequence '\k'
[-Wunknown-escape-sequence]
const std::string a = "\k"; // Non-compliant
^~
1 warning generated.
Rule A2-14-1 (required, implementation, automated)Only those escape sequences that are defined in ISO/IEC 14882:2014 shallbe used.(19)A2-14-1.cpp
rm: a2-14-1l13: No such file or directory
$ clang++ a2-14-1.cpp -std=c++17 -Wall
a2-14-1.cpp:19:25: warning: unknown escape sequence '\k'
[-Wunknown-escape-sequence]
const std::string a = "\k"; // Non-compliant
^~
1 warning generated.
Rule A2-14-1 (required, implementation, automated)Only those escape sequences that are defined in ISO/IEC 14882:2014 shallbe used.(19)A2-14-1.cpp
$ clang++ a2-14-1.cpp -std=c++2a -Wall
a2-14-1.cpp:19:25: warning: unknown escape sequence '\k'
[-Wunknown-escape-sequence]
const std::string a = "\k"; // Non-compliant
^~
1 warning generated.
Rule A2-14-1 (required, implementation, automated)Only those escape sequences that are defined in ISO/IEC 14882:2014 shallbe used.(19)A2-14-1.cpp
$ g++-8 a2-14-1.cpp -std=c++14 -Wall
a2-14-1.cpp: In function 'void f()':
a2-14-1.cpp:19:24: warning: unknown escape sequence: '\k'
const std::string a = "\k"; // Non-compliant
^~~~
Rule A2-14-1 (required, implementation, automated)Only those escape sequences that are defined in ISO/IEC 14882:2014 shallbe used.(19)A2-14-1.cpp
$ g++-8 a2-14-1.cpp -std=c++17 -Wall
a2-14-1.cpp: In function 'void f()':
a2-14-1.cpp:19:24: warning: unknown escape sequence: '\k'
const std::string a = "\k"; // Non-compliant
^~~~
Rule A2-14-1 (required, implementation, automated)Only those escape sequences that are defined in ISO/IEC 14882:2014 shallbe used.(19)A2-14-1.cpp
$ g++-8 a2-14-1.cpp -std=c++2a -Wall
a2-14-1.cpp: In function 'void f()':
a2-14-1.cpp:19:24: warning: unknown escape sequence: '\k'
const std::string a = "\k"; // Non-compliant
^~~~
Rule A2-14-1 (required, implementation, automated)Only those escape sequences that are defined in ISO/IEC 14882:2014 shallbe used.(19)A2-14-1.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
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
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/
Reference
Ethernet 記事一覧 Ethernet(0)
https://qiita.com/kaizen_nagoya/items/88d35e99f74aefc98794
Wireshark 一覧 wireshark(0)、Ethernet(48)
https://qiita.com/kaizen_nagoya/items/fbed841f61875c4731d0
線網（Wi-Fi）空中線(antenna)(0) 記事一覧(118/300目標)
https://qiita.com/kaizen_nagoya/items/5e5464ac2b24bd4cd001
C++ Support(0)
https://qiita.com/kaizen_nagoya/items/8720d26f762369a80514
Coding Rules(0) C Secure , MISRA and so on
https://qiita.com/kaizen_nagoya/items/400725644a8a0e90fbb0
Autosar Guidelines C++14 example code compile list(1-169)
https://qiita.com/kaizen_nagoya/items/8ccbf6675c3494d57a76
Error一覧(C/C++, python, bash...) Error(0)
https://qiita.com/kaizen_nagoya/items/48b6cbc8d68eae2c42b8
なぜdockerで機械学習するか 書籍・ソース一覧作成中 (目標100)
https://qiita.com/kaizen_nagoya/items/ddd12477544bf5ba85e2
言語処理100本ノックをdockerで。python覚えるのに最適。:10+12
https://qiita.com/kaizen_nagoya/items/7e7eb7c543e0c18438c4
プログラムちょい替え（0）一覧:4件
https://qiita.com/kaizen_nagoya/items/296d87ef4bfd516bc394
一覧の一覧( The directory of directories of mine.) Qiita(100)
https://qiita.com/kaizen_nagoya/items/7eb0e006543886138f39
プログラマが知っていると良い「公序良俗」
https://qiita.com/kaizen_nagoya/items/9fe7c0dfac2fbd77a945
小川清最終講義、小川清最終講義（再）計画, Ethernet(100) 英語(100) 安全(100)
https://qiita.com/kaizen_nagoya/items/e2df642e3951e35e6a53
文書履歴
ver 0.10 初稿 20180607
ver 0.11 一覧追記 20180613