libstdc++-v3/testsuite/22_locale/num_get/get/char/39802.cc

   1 // Copyright (C) 2009-2022 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 // 22.2.2.1.1  num_get members
  19
  20 #include <locale>
  21 #include <sstream>
  22 #include <limits>
  23 #include <testsuite_hooks.h>
  24
  25 // libstdc++/39802
  26 void test01()
  27 {
  28   using namespace std;
  29   typedef istreambuf_iterator<char> iterator_type;
  30
  31   stringstream ss;
  32   const num_get<char>& ng = use_facet<num_get<char> >(ss.getloc());
  33   ios_base::iostate err;
  34   iterator_type end;
  35   const string empty;
  36
  37   unsigned long ul0 = 1;
  38   const unsigned long ul1 = numeric_limits<unsigned long>::max();
  39
  40   ss << "-0";
  41   err = ios_base::goodbit;
  42   end = ng.get(ss.rdbuf(), 0, ss, err, ul0);
  43   VERIFY( err == ios_base::eofbit );
  44   VERIFY( ul0 == 0 );
  45
  46   ss.clear();
  47   ss.str(empty);
  48   ss << "-1";
  49   err = ios_base::goodbit;
  50   end = ng.get(ss.rdbuf(), 0, ss, err, ul0);
  51   VERIFY( err == ios_base::eofbit );
  52   VERIFY( ul0 == ul1 );
  53
  54   ss.clear();
  55   ss.str(empty);
  56   ss << '-' << ul1;
  57   err = ios_base::goodbit;
  58   end = ng.get(ss.rdbuf(), 0, ss, err, ul0);
  59   VERIFY( err == ios_base::eofbit );
  60   VERIFY( ul0 == 1 );
  61
  62   ss.clear();
  63   ss.str(empty);
  64   ss << '-' << ul1 << '0';
  65   err = ios_base::goodbit;
  66   end = ng.get(ss.rdbuf(), 0, ss, err, ul0);
  67   VERIFY( err == (ios_base::eofbit | ios_base::failbit) );
  68   VERIFY( ul0 == ul1 );
  69 }
  70
  71 int main()
  72 {
  73   test01();
  74   return 0;
  75 }