]>
git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/char/6.cc
1 // { dg-do run { target c++11 } }
3 // Copyright (C) 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 // 27.6.2.5.3 basic_ostream manipulator inserters
25 std::ostream
& operator<<(std::ostream
&, const X
&) = delete;
28 std::ostream
& operator<<(std::ostream
& os
, const Y
&) {return os
;}
29 std::ostream
& operator<<(std::ostream
&& os
, const Y
&) {return os
;}
34 auto f(T
&&) -> decltype(void(std::declval
<std::ostream
&>()
35 << std::declval
<T
&&>()),
38 std::false_type
f(...);
41 auto g(T
&&) -> decltype(void(std::declval
<std::ostream
&&>()
42 << std::declval
<T
&&>()),
45 std::false_type
g(...);
50 std::ostringstream os
;
53 std::ostringstream() << y
;
54 std::ostringstream() << Y();
55 static_assert(!std::__is_insertable
<std::ostream
&, X
&>::value
, "");
56 static_assert(!std::__is_insertable
<std::ostream
&&, X
&>::value
, "");
57 static_assert(!std::__is_insertable
<std::ostream
&, X
&&>::value
, "");
58 static_assert(!std::__is_insertable
<std::ostream
&&, X
&&>::value
, "");
59 static_assert(std::__is_insertable
<std::ostream
&, Y
&>::value
, "");
60 static_assert(std::__is_insertable
<std::ostream
&&, Y
&&>::value
, "");
61 static_assert(std::__is_insertable
<std::ostream
&, Y
&>::value
, "");
62 static_assert(std::__is_insertable
<std::ostream
&&, Y
&&>::value
, "");
63 static_assert(!std::__is_insertable
<std::ostream
&, Z
&>::value
, "");
64 static_assert(!std::__is_insertable
<std::ostream
&&, Z
&>::value
, "");
65 static_assert(!std::__is_insertable
<std::ostream
&, Z
&&>::value
, "");
66 static_assert(!std::__is_insertable
<std::ostream
&&, Z
&&>::value
, "");
67 static_assert(std::is_same
<decltype(f(std::declval
<X
&>())),
68 std::false_type
>::value
, "");
69 static_assert(std::is_same
<decltype(f(std::declval
<X
&&>())),
70 std::false_type
>::value
, "");
71 static_assert(std::is_same
<decltype(f(std::declval
<Y
&>())),
72 std::true_type
>::value
, "");
73 static_assert(std::is_same
<decltype(f(std::declval
<Y
&&>())),
74 std::true_type
>::value
, "");
75 static_assert(std::is_same
<decltype(f(std::declval
<Z
&>())),
76 std::false_type
>::value
, "");
77 static_assert(std::is_same
<decltype(f(std::declval
<Z
&&>())),
78 std::false_type
>::value
, "");
79 static_assert(std::is_same
<decltype(g(std::declval
<X
&>())),
80 std::false_type
>::value
, "");
81 static_assert(std::is_same
<decltype(g(std::declval
<X
&&>())),
82 std::false_type
>::value
, "");
83 static_assert(std::is_same
<decltype(g(std::declval
<Y
&>())),
84 std::true_type
>::value
, "");
85 static_assert(std::is_same
<decltype(g(std::declval
<Y
&&>())),
86 std::true_type
>::value
, "");
87 static_assert(std::is_same
<decltype(g(std::declval
<Z
&>())),
88 std::false_type
>::value
, "");
89 static_assert(std::is_same
<decltype(g(std::declval
<Z
&&>())),
90 std::false_type
>::value
, "");