libstdc++-v3/testsuite/20_util/to_chars/95851.cc

   1 // Copyright (C) 2020-2022 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++14 } }
  19
  20 #include <charconv>
  21 #include <testsuite_hooks.h>
  22
  23 void
  24 test01()
  25 {
  26   char* p = nullptr;
  27   auto res = std::to_chars(p, p, 0, 2); // PR libstdc++/95851
  28   VERIFY( res.ptr == p );
  29   VERIFY( res.ec == std::errc::value_too_large );
  30 }
  31
  32 int
  33 main()
  34 {
  35   test01();
  36 }