libstdc++-v3/testsuite/27_io/manipulators/standard/wchar_t/2.cc

   1 // { dg-options "-fno-implicit-templates" }
   2
   3 // Copyright (C) 2004-2021 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // Some members need to be explicitly instantiated, so that users can build
  21 // their own code with -fno-implicit-templates and not suffer from a zillion
  22 // link errors.
  23
  24 #include <istream>
  25 #include <ostream>
  26 #include <sstream>
  27 #include <iomanip>
  28 #include <testsuite_hooks.h>
  29
  30 // PR libstdc++/3829
  31 void
  32 test01()
  33 {
  34   using namespace std;
  35   wstring x(L"   this is text");
  36   wistringstream  sin(x);
  37   wostringstream  sout;
  38
  39   // same order as in bits/std_iomanip.h
  40   sin >> resetiosflags(ios_base::dec)
  41       >> setiosflags(ios_base::dec)
  42       >> setbase(ios_base::dec)
  43       >> setfill(L'c')
  44       >> setprecision(5)
  45       >> setw(20)
  46       >> ws;
  47   VERIFY(sin.good());
  48
  49   sout << resetiosflags(ios_base::dec)
  50        << setiosflags(ios_base::dec)
  51        << setbase(ios_base::dec)
  52        << setfill(L'c')
  53        << setprecision(5)
  54        << setw(20)
  55        << ends << flush << endl;
  56   VERIFY(sout.good());
  57 }
  58
  59 int
  60 main()
  61 {
  62   test01();
  63   return 0;
  64 }