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05e4ef54 1// 2003-05-01 Petur Runolfsson <peturr02@ru.is>
aec2e740 2
fbd26352 3// Copyright (C) 2003-2019 Free Software Foundation, Inc.
aec2e740 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
6bc9506f 8// Free Software Foundation; either version 3, or (at your option)
aec2e740 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
6bc9506f 17// with this library; see the file COPYING3. If not see
18// <http://www.gnu.org/licenses/>.
aec2e740 19
05e4ef54 20#include <ext/stdio_sync_filebuf.h>
aec2e740 21#include <testsuite_hooks.h>
22
05e4ef54 23// libstdc++/12048
24void test02()
25{
05e4ef54 26 const char* name = "cin_unget-1.txt";
27
28 std::FILE* file = std::fopen(name, "r");
29 __gnu_cxx::stdio_sync_filebuf<wchar_t> sbuf(file);
30 std::wint_t c1 = sbuf.sbumpc();
31 VERIFY( c1 != WEOF );
32 std::wint_t c2 = sbuf.sungetc();
33 VERIFY( c2 != WEOF );
34 std::wint_t c3 = sbuf.sbumpc();
35 VERIFY( c3 == c1 );
36
37 std::fclose(file);
38}
aec2e740 39
05e4ef54 40int main ()
aec2e740 41{
05e4ef54 42 test02();
43 return 0;
44}