libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/11.cc

   1 // Copyright (C) 2004-2020 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 // 27.6.1.2.2 arithmetic extractors
  19
  20 #include <istream>
  21 #include <sstream>
  22 #include <locale>
  23 #include <cwchar>
  24 #include <testsuite_hooks.h>
  25
  26 // In the presence of no fmtflags, the input operator should behave
  27 // like strtol(x, y, 0)
  28 // libstdc++/90
  29 void test11()
  30 {
  31   const wchar_t* cstrlit = L"0x2a";
  32
  33   // sanity check via 'C' library call
  34   wchar_t* err;
  35   long l = std::wcstol(cstrlit, &err, 0);
  36
  37   std::wistringstream iss(cstrlit);
  38   iss.setf(std::wios::fmtflags(0), std::ios::basefield);
  39   int i;
  40   iss >> i;
  41
  42   VERIFY( !iss.fail() );
  43   VERIFY( l == i );
  44 }
  45
  46 int main()
  47 {
  48   test11();
  49   return 0;
  50 }