libstdc++-v3/testsuite/27_io/basic_istream/seekg/char/exceptions_badbit_throw.cc

   1 // Copyright (C) 2003 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 2, 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 COPYING.  If not, write to the Free
  16 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17 // USA.
  18
  19 // As a special exception, you may use this file as part of a free software
  20 // library without restriction.  Specifically, if other files instantiate
  21 // templates or use macros or inline functions from this file, or you compile
  22 // this file and link it with other files to produce an executable, this
  23 // file does not by itself cause the resulting executable to be covered by
  24 // the GNU General Public License.  This exception does not however
  25 // invalidate any other reasons why the executable file might be covered by
  26 // the GNU General Public License.
  27
  28 #include <istream>
  29 #include <streambuf>
  30 #include <sstream>
  31 #include <testsuite_hooks.h>
  32 #include <testsuite_io.h>
  33
  34 using namespace std;
  35
  36 void test01()
  37 {
  38   bool test __attribute__((unused)) = true;
  39   __gnu_test::fail_streambuf bib;
  40   istream stream(&bib);
  41   stream.exceptions(ios_base::badbit);
  42
  43   istream::pos_type pos;
  44
  45   try
  46     {
  47       stream.seekg(pos);
  48       VERIFY( false );
  49     }
  50   catch (const __gnu_test::positioning_error&)
  51     {
  52       // stream should set badbit and rethrow facet_error.
  53       VERIFY( stream.bad() );
  54       VERIFY( (stream.rdstate() & ios_base::failbit) == 0 );
  55       VERIFY( !stream.eof() );
  56     }
  57   catch (...)
  58     {
  59       VERIFY(false);
  60     }
  61 }
  62
  63 void test02()
  64 {
  65   bool test __attribute__((unused)) = true;
  66   __gnu_test::fail_streambuf bib;
  67   istream stream(&bib);
  68   stream.exceptions(ios_base::badbit);
  69
  70   istream::off_type off;
  71
  72   try
  73     {
  74       stream.seekg(off, ios_base::cur);
  75       VERIFY( false );
  76     }
  77   catch (const __gnu_test::positioning_error&)
  78     {
  79       // stream should set badbit and rethrow facet_error.
  80       VERIFY( stream.bad() );
  81       VERIFY( (stream.rdstate() & ios_base::failbit) == 0 );
  82       VERIFY( !stream.eof() );
  83     }
  84   catch (...)
  85     {
  86       VERIFY(false);
  87     }
  88 }
  89
  90 // libstdc++/9546
  91 int main()
  92 {
  93   test01();
  94   test02();
  95   return 0;
  96 }