libstdc++-v3/testsuite/27_io/basic_istream/seekg/wchar_t/exceptions_badbit_throw.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
  19 #include <istream>
  20 #include <streambuf>
  21 #include <sstream>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_io.h>
  24
  25 using namespace std;
  26
  27 void test01()
  28 {
  29   __gnu_test::fail_wstreambuf bib;
  30   wistream stream(&bib);
  31   stream.exceptions(ios_base::badbit);
  32
  33   wistream::pos_type pos;
  34
  35   try
  36     {
  37       stream.seekg(pos);
  38       VERIFY( false );
  39     }
  40   catch (const __gnu_test::positioning_error&)
  41     {
  42       // stream should set badbit and rethrow facet_error.
  43       VERIFY( stream.bad() );
  44       VERIFY( (stream.rdstate() & ios_base::failbit) == 0 );
  45       VERIFY( !stream.eof() );
  46     }
  47   catch (...)
  48     {
  49       VERIFY(false);
  50     }
  51 }
  52
  53 void test02()
  54 {
  55   __gnu_test::fail_wstreambuf bib;
  56   wistream stream(&bib);
  57   stream.exceptions(ios_base::badbit);
  58
  59   wistream::off_type off(5);
  60
  61   try
  62     {
  63       stream.seekg(off, ios_base::cur);
  64       VERIFY( false );
  65     }
  66   catch (const __gnu_test::positioning_error&)
  67     {
  68       // stream should set badbit and rethrow facet_error.
  69       VERIFY( stream.bad() );
  70       VERIFY( (stream.rdstate() & ios_base::failbit) == 0 );
  71       VERIFY( !stream.eof() );
  72     }
  73   catch (...)
  74     {
  75       VERIFY(false);
  76     }
  77 }
  78
  79 // libstdc++/9546
  80 int main()
  81 {
  82   test01();
  83   test02();
  84   return 0;
  85 }