//Guidelines for the use of the C++14 language in critical and safety-related systems
const char* msg="Rule A7-1-4 (required, implementation, automated)The register keyword shall not be used.(59)A7-1-4.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" is from AUTOSAR without code having /// comment in line.
// $Id: A7-1-4.cpp 271687 2017-03-23 08:57:35Z piotr.tanski $
#include <cstdint>
std::int32_t f1(register std::int16_t number) noexcept // Non-compliant
{
return ((number * number) + number);
}
void f2(std::int16_t number) noexcept // Compliant
{
register std::int8_t x = 10; // Non-compliant
 std::int32_t result = f1(number); // Compliant
 // ...
 }
///end AUTOSAR
int start() { /// @{} for start
  register int16_t i=256;
  cout << "f1="<<f1(i)<<endl;
  f2(i);
  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 a7-1-4
$ clang++ a7-1-4.cpp -I./ -std=c++14 -Wall
a7-1-4.cpp:17:17: warning: 'register' storage class specifier is deprecated and incompatible with C++17
      [-Wdeprecated-register]
std::int32_t f1(register std::int16_t number) noexcept // Non-compliant
                ^~~~~~~~~
a7-1-4.cpp:23:1: warning: 'register' storage class specifier is deprecated and incompatible with C++17
      [-Wdeprecated-register]
register std::int8_t x = 10; // Non-compliant
^~~~~~~~~
2 warnings generated.
f1=65792
x=
 result=65792
Rule A7-1-4 (required, implementation, automated)The register keyword shall not be used.(59)A7-1-4.cpp
$ clang++ a7-1-4.cpp  -I./ -std=c++17 -Wall
a7-1-4.cpp:17:17: error: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
std::int32_t f1(register std::int16_t number) noexcept // Non-compliant
                ^~~~~~~~~
a7-1-4.cpp:23:1: error: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
register std::int8_t x = 10; // Non-compliant
^~~~~~~~~
2 errors generated.
$ clang++ a7-1-4.cpp  -I./ -std=c++2a -Wall
a7-1-4.cpp:17:17: error: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
std::int32_t f1(register std::int16_t number) noexcept // Non-compliant
                ^~~~~~~~~
a7-1-4.cpp:23:1: error: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
register std::int8_t x = 10; // Non-compliant
^~~~~~~~~
2 errors generated.

$ g++-8 a7-1-4.cpp  -I./ -std=c++14  -Wall
f1=65792
x=
 result=65792
Rule A7-1-4 (required, implementation, automated)The register keyword shall not be used.(59)A7-1-4.cpp
$ g++-8 a7-1-4.cpp  -I./ -std=c++17  -Wall
a7-1-4.cpp:17:39: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
 std::int32_t f1(register std::int16_t number) noexcept // Non-compliant
                                       ^~~~~~
a7-1-4.cpp: In function 'void f2(int16_t)':
a7-1-4.cpp:23:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
 register std::int8_t x = 10; // Non-compliant
                      ^
f1=65792
x=
 result=65792
Rule A7-1-4 (required, implementation, automated)The register keyword shall not be used.(59)A7-1-4.cpp
$ g++-8 a7-1-4.cpp  -I./ -std=c++2a  -Wall
a7-1-4.cpp:17:39: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
 std::int32_t f1(register std::int16_t number) noexcept // Non-compliant
                                       ^~~~~~
a7-1-4.cpp: In function 'void f2(int16_t)':
a7-1-4.cpp:23:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
 register std::int8_t x = 10; // Non-compliant
                      ^
f1=65792
x=
 result=65792
Rule A7-1-4 (required, implementation, automated)The register keyword shall not be used.(59)A7-1-4.cpp