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// Copyright (C) 2009 Free Software Foundation
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
// 27.6.1.3 unformatted input functions
#include <istream>
#include <streambuf>
#include <testsuite_hooks.h>
// libstdc++/38678
void test01()
{
bool test __attribute__((unused)) = true;
static wchar_t x = L'0';
struct : std::wstreambuf
{
wchar_t c;
int_type
underflow()
{
c = x++;
setg(&c, &c, &c + 1);
return traits_type::to_int_type(c);
}
std::streamsize
xsgetn(wchar_t*, std::streamsize)
{
VERIFY( !"xsgetn should not be called" );
return 0;
}
} sb;
std::wistream in(&sb);
wchar_t s[4] = L"";
in.read(s, 4);
VERIFY( in.good() );
VERIFY( 4 == in.gcount() );
VERIFY( L'0' == s[0] && L'1' == s[1] && L'2' == s[2] && L'3' == s[3] );
}
int main()
{
test01();
return 0;
}
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