//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.
}

$ ../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