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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) 1999-2016 Free Software Foundation, Inc.
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 const std::string str_01
;
30 const std::string
str_02("soul eyes: john coltrane quartet");
33 std::stringbuf
isbuf_03(str_02
, std::ios_base::in
);
34 std::stringbuf
isbuf_04(str_02
, std::ios_base::in
);
35 std::stringbuf
isbuf_05(str_02
, std::ios_base::in
);
37 std::istream
is_00(&isbuf_05
);
38 std::istream
is_03(&isbuf_03
);
39 std::istream
is_04(&isbuf_04
);
40 std::ios_base::iostate state1
, state2
;
42 // istream& putback(char c)
45 state1
= is_04
.rdstate();
47 VERIFY( is_04
.gcount() == 0 ); // DR 60
48 state2
= is_04
.rdstate();
49 VERIFY( state1
== state2
);
50 VERIFY( is_04
.peek() == 't' );
54 state1
= is_04
.rdstate();
56 VERIFY( is_04
.gcount() == 0 ); // DR 60
57 state2
= is_04
.rdstate();
58 VERIFY( state1
== state2
);
59 VERIFY( is_04
.peek() == 'r' );
63 int count1
= is_00
.gcount();
65 int count2
= is_00
.gcount();
66 VERIFY (count1
== count2
); // DR 60