libstdc++-v3/testsuite/19_diagnostics/error_category/system_category.cc

   1 // Copyright (C) 2018-2024 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19
  20 #include <system_error>
  21 #include <locale>
  22 #include <testsuite_hooks.h>
  23
  24 void
  25 test01()
  26 {
  27   const char* name = std::system_category().name();
  28   VERIFY( name == std::string("system") );
  29 }
  30
  31 void
  32 test02()
  33 {
  34   const std::error_category& cat = std::system_category();
  35   std::error_condition cond;
  36
  37 #if defined __MING32__ || defined __MINGW64__
  38   cond = cat.default_error_condition(8); // ERROR_NOT_ENOUGH_MEMORY
  39   VERIFY( cond.value() == ENOMEM );
  40   VERIFY( cond.category() == std::generic_category() );
  41   VERIFY( cond == std::errc::not_enough_memory );
  42
  43   cond = cat.default_error_condition(5); // ERROR_ACCESS_DENIED
  44   VERIFY( cond.value() == EACCES );
  45   VERIFY( cond.category() == std::generic_category() );
  46   VERIFY( cond == std::errc::permission_denied );
  47   return;
  48 #endif
  49
  50   // As of 2011, ISO C only defines EDOM, EILSEQ and ERANGE:
  51   cond = cat.default_error_condition(EDOM);
  52   VERIFY( cond.value() == EDOM );
  53   VERIFY( cond == std::errc::argument_out_of_domain );
  54   VERIFY( cond.category() == std::generic_category() );
  55   cond = cat.default_error_condition(EILSEQ);
  56   VERIFY( cond.value() == EILSEQ );
  57   VERIFY( cond == std::errc::illegal_byte_sequence );
  58   VERIFY( cond.category() == std::generic_category() );
  59   cond = cat.default_error_condition(ERANGE);
  60   VERIFY( cond.value() == ERANGE );
  61   VERIFY( cond == std::errc::result_out_of_range );
  62   VERIFY( cond.category() == std::generic_category() );
  63
  64   // EBADF and EACCES are defined on all targets,
  65   // according to config/os/*/error_constants.h
  66   cond = cat.default_error_condition(EBADF);
  67   VERIFY( cond.value() == EBADF );
  68   VERIFY( cond == std::errc::bad_file_descriptor );
  69   VERIFY( cond.category() == std::generic_category() );
  70   cond = cat.default_error_condition(EACCES);
  71   VERIFY( cond.value() == EACCES );
  72   VERIFY( cond == std::errc::permission_denied );
  73   VERIFY( cond.category() == std::generic_category() );
  74
  75   // All POSIX errno values are positive:
  76   cond = cat.default_error_condition(-1);
  77   VERIFY( cond.value() == -1 );
  78   VERIFY( cond.category() == cat );
  79   cond = cat.default_error_condition(-99);
  80   VERIFY( cond.value() == -99 );
  81   VERIFY( cond.category() == cat );
  82
  83   // PR libstdc++/60555
  84   VERIFY( std::error_code(EDOM, cat) == std::errc::argument_out_of_domain );
  85   VERIFY( std::error_code(EILSEQ, cat) == std::errc::illegal_byte_sequence );
  86   VERIFY( std::error_code(ERANGE, cat) == std::errc::result_out_of_range );
  87   VERIFY( std::error_code(EBADF, cat) == std::errc::bad_file_descriptor );
  88   VERIFY( std::error_code(EACCES, cat) == std::errc::permission_denied );
  89
  90   // As shown at https://gcc.gnu.org/ml/libstdc++/2018-08/msg00018.html
  91   // these two error codes might have the same value on AIX, but we still
  92   // expect both to be matched by system_category and so use generic_category:
  93 #ifdef EEXIST
  94   cond = cat.default_error_condition(EEXIST);
  95   VERIFY( cond.value() == EEXIST );
  96   VERIFY( cond == std::errc::file_exists );
  97   VERIFY( cond.category() == std::generic_category() );
  98   VERIFY( std::error_code(EEXIST, cat) == std::errc::file_exists );
  99 #endif
 100 #ifdef ENOTEMPTY
 101   cond = cat.default_error_condition(ENOTEMPTY);
 102   VERIFY( cond.value() == ENOTEMPTY );
 103   VERIFY( cond == std::errc::directory_not_empty );
 104   VERIFY( cond.category() == std::generic_category() );
 105   VERIFY( std::error_code(ENOTEMPTY, cat) == std::errc::directory_not_empty );
 106 #endif
 107 }
 108
 109 void
 110 test03()
 111 {
 112   // set "C" locale to get expected message
 113   auto loc = std::locale::global(std::locale::classic());
 114
 115 #if defined __MING32__ || defined __MINGW64__
 116   std::string msg = std::system_category().message(5); // ERROR_ACCESS_DENIED
 117   VERIFY(msg == "Access denied");
 118 #else
 119   std::string msg = std::system_category().message(EBADF);
 120   VERIFY( msg.find("file") != std::string::npos );
 121 #endif
 122
 123   std::locale::global(loc);
 124 }
 125
 126 int
 127 main()
 128 {
 129   test01();
 130   test02();
 131   test03();
 132 }