libstdc++-v3/testsuite/27_io/basic_stringbuf/sbumpc/char/9825.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001-2017 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 // 27.8.1.4 Overridden virtual functions
  21
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24
  25 // libstdc++/9825
  26 // filebuf::sputbackc breaks sbumpc
  27 void test12()
  28 {
  29   using namespace std;
  30
  31   stringbuf sbuf;
  32   sbuf.sputn("crazy bees!", 11);
  33   sbuf.pubseekoff(0, ios_base::beg);
  34   sbuf.sbumpc();
  35   sbuf.sputbackc('x');
  36   stringbuf::int_type c = sbuf.sbumpc();
  37   VERIFY( c == 'x' );
  38   c = sbuf.sbumpc();
  39   VERIFY( c == 'r' );
  40   c = sbuf.sbumpc();
  41   VERIFY( c == 'a' );
  42 }
  43
  44 int main()
  45 {
  46   test12();
  47   return 0;
  48 }