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2003-02-06 Paolo Carlini <pcarlini@unitus.it> PR libstdc++/9562 * include/std/std_istream.h (basic_istream::sentry::operator bool()): Make const. * include/std/std_ostream.h (basic_ostream::sentry::operator bool()): Likewise. * testsuite/27_io/istream_sentry.cc (test03): Add. * testsuite/27_io/ostream_sentry.cc: Add. From-SVN: r62508
102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
// 1999-10-14 bkoz
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// Copyright (C) 1999, 2001 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// 27.6.1.1.2 class basic_istream::sentry
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#include <istream>
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#include <sstream>
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#include <testsuite_hooks.h>
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void test01()
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{
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bool test = true;
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const char* lit01 = "stereolab on the bolsinga tip";
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const std::string str01(lit01);
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std::stringbuf strbuf01;
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std::stringbuf strbuf02(str01);
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std::istream istr01(&strbuf01);
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std::istream istr02(&strbuf02);
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// test negatives
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std::istream::sentry sentry01(istr01);
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VERIFY( bool(sentry01) == false );
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std::istream::sentry sentry02(istr01, true);
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VERIFY( bool(sentry02) == false );
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// positive tests
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std::istream::sentry sentry03(istr02);
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VERIFY( bool(sentry03) == true );
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std::istream::sentry sentry04(istr02, true);
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VERIFY( bool(sentry04) == true );
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}
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// libstdc++/944
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void
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test02()
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{
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using namespace std;
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istringstream in("80.21 56.89 12.3");
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bool test = true;
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int i = 0;
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double x;
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// ios_base::eof == 2
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while (in >> x)
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{
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++i;
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if (i > 3)
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break;
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}
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VERIFY( i == 3 );
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}
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// libstdc++/9562
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void
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test03()
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{
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bool test = true;
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std::stringbuf strbuf01;
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std::istream strm1(&strbuf01);
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const std::istream::sentry sentry1(strm1);
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VERIFY( bool(sentry1) == false );
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}
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int main()
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{
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test01();
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test02();
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test03();
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return 0;
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}
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