libstdc++-v3/testsuite/20_util/from_chars/requirements.cc

   1 // Copyright (C) 2017-2021 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 compile { target c++17 } }
  19 // { dg-require-normal-namespace "" }
  20
  21 #include <charconv>
  22
  23 namespace std
  24 {
  25   struct from_chars_result;
  26
  27   const char* from_chars_result::*pm2 = &from_chars_result::ptr;
  28   errc from_chars_result::*pm1 = &from_chars_result::ec;
  29
  30   from_chars_result (*f1)(const char*, const char*, char&, int)
  31     = &from_chars;
  32   from_chars_result (*f2)(const char*, const char*, signed char&, int)
  33     = &from_chars;
  34   from_chars_result (*f3)(const char*, const char*, unsigned char&, int)
  35     = &from_chars;
  36   from_chars_result (*f4)(const char*, const char*, signed short&, int)
  37     = &from_chars;
  38   from_chars_result (*f5)(const char*, const char*, unsigned short&, int)
  39     = &from_chars;
  40   from_chars_result (*f6)(const char*, const char*, signed int&, int)
  41     = &from_chars;
  42   from_chars_result (*f7)(const char*, const char*, unsigned int&, int)
  43     = &from_chars;
  44   from_chars_result (*f8)(const char*, const char*, signed long&, int)
  45     = &from_chars;
  46   from_chars_result (*f9)(const char*, const char*, unsigned long&, int)
  47     = &from_chars;
  48   from_chars_result (*f10)(const char*, const char*, signed long long&, int)
  49     = &from_chars;
  50   from_chars_result (*f11)(const char*, const char*, unsigned long long&, int)
  51     = &from_chars;
  52 }
  53
  54 void bind()
  55 {
  56   const char buf[1] = "";
  57   int i;
  58   auto [p, e] = std::from_chars(buf, buf + 1, i, 10);
  59   const char** pa = &p;
  60   std::errc* ea = &e;
  61 }