75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
// 2003-05-01 Petur Runolfsson <peturr02@ru.is>
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// Copyright (C) 2003-2020 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 3, 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 COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-require-fileio "" }
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// { dg-require-binary-io "" }
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#include <iostream>
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#include <cstdio>
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#include <testsuite_hooks.h>
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void test10()
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{
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using namespace std;
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const char* name = "filebuf_virtuals-1.txt";
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FILE* ret = freopen(name, "r", stdin);
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VERIFY( ret );
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streampos p1 = cin.tellg();
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VERIFY( p1 != streampos(-1) );
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VERIFY( streamoff(p1) == 0 );
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cin.seekg(0, ios::end);
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VERIFY( cin.good() );
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streampos p2 = cin.tellg();
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VERIFY( p2 != streampos(-1) );
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VERIFY( p2 != p1 );
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VERIFY( streamoff(p2) == ftell(stdin) );
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cin.seekg(p1);
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VERIFY( cin.good() );
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streamoff n = p2 - p1;
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VERIFY( n > 0 );
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for (int i = 0; i < n; ++i)
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{
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streampos p3 = cin.tellg();
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VERIFY( streamoff(p3) == i );
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VERIFY( ftell(stdin) == i );
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cin.get();
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VERIFY( cin.good() );
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}
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streampos p4 = cin.tellg();
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VERIFY( streamoff(p4) == n );
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VERIFY( ftell(stdin) == n );
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cin.get();
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VERIFY( cin.eof() );
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}
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int main()
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{
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test10();
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return 0;
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}
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