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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_istream/putback/char/1.cc
3 // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2009 Free Software Foundation
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)
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.
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/>.
20 // 27.6.1.3 unformatted input functions
24 #include <testsuite_hooks.h>
29 bool test
__attribute__((unused
)) = true;
30 const std::string str_01
;
31 const std::string
str_02("soul eyes: john coltrane quartet");
34 std::stringbuf
isbuf_03(str_02
, std::ios_base::in
);
35 std::stringbuf
isbuf_04(str_02
, std::ios_base::in
);
36 std::stringbuf
isbuf_05(str_02
, std::ios_base::in
);
38 std::istream
is_00(&isbuf_05
);
39 std::istream
is_03(&isbuf_03
);
40 std::istream
is_04(&isbuf_04
);
41 std::ios_base::iostate state1
, state2
;
43 // istream& putback(char c)
46 state1
= is_04
.rdstate();
48 VERIFY( is_04
.gcount() == 0 ); // DR 60
49 state2
= is_04
.rdstate();
50 VERIFY( state1
== state2
);
51 VERIFY( is_04
.peek() == 't' );
55 state1
= is_04
.rdstate();
57 VERIFY( is_04
.gcount() == 0 ); // DR 60
58 state2
= is_04
.rdstate();
59 VERIFY( state1
== state2
);
60 VERIFY( is_04
.peek() == 'r' );
64 int count1
= is_00
.gcount();
66 int count2
= is_00
.gcount();
67 VERIFY (count1
== count2
); // DR 60