|
111
|
1 // { dg-do compile { target c++11 } }
|
|
|
2
|
|
145
|
3 // Copyright (C) 2015-2020 Free Software Foundation, Inc.
|
|
111
|
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
|
|
|
8 // Free Software Foundation; either version 3, or (at your option)
|
|
|
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
|
|
|
17 // with this library; see the file COPYING3. If not see
|
|
|
18 // <http://www.gnu.org/licenses/>.
|
|
|
19
|
|
|
20 #include <sstream>
|
|
|
21
|
|
|
22 struct A {};
|
|
|
23
|
|
|
24 void operator<<(std::ostream&, const A&) { }
|
|
|
25 void operator>>(std::istream&, A&) { }
|
|
|
26
|
|
|
27 class MyStream : private std::ostream, private std::istream
|
|
|
28 {
|
|
|
29 public:
|
|
|
30 MyStream& operator <<(const char*)
|
|
|
31 {
|
|
|
32 return *this;
|
|
|
33 }
|
|
|
34 MyStream& operator >>(int&)
|
|
|
35 {
|
|
|
36 return *this;
|
|
|
37 }
|
|
|
38 };
|
|
|
39
|
|
|
40 class MyStream2
|
|
|
41 {
|
|
|
42 public:
|
|
|
43 MyStream2& operator <<(const char*)
|
|
|
44 {
|
|
|
45 return *this;
|
|
|
46 }
|
|
|
47 MyStream2& operator >>(int&)
|
|
|
48 {
|
|
|
49 return *this;
|
|
|
50 }
|
|
|
51 private:
|
|
|
52 operator std::ostream&();
|
|
|
53 operator std::istream&();
|
|
|
54 };
|
|
|
55
|
|
|
56 struct X { };
|
|
|
57
|
|
|
58 std::ostream& operator<<(std::ostream& os, const X&) { return os; }
|
|
|
59 std::istream& operator>>(std::istream& is, X&&) { return is; }
|
|
|
60
|
|
|
61 struct O : std::ostream { };
|
|
|
62
|
|
|
63 void operator<<(O&, X) = delete;
|
|
|
64
|
|
|
65 struct I : std::istream { };
|
|
|
66
|
|
|
67 void operator>>(I&, X) = delete;
|
|
|
68
|
|
|
69 // PR libstdc++/65543
|
|
|
70 // PR libstdc++/80675
|
|
|
71 // PR libstdc++/80940
|
|
|
72 int main()
|
|
|
73 {
|
|
|
74 A a;
|
|
|
75
|
|
|
76 std::ostringstream() << a;
|
|
|
77 std::istringstream() >> a;
|
|
|
78 MyStream stream{};
|
|
|
79 stream << "aaa";
|
|
|
80 int msi;
|
|
|
81 stream >> msi;
|
|
|
82 MyStream2 stream2{};
|
|
|
83 stream2 << "aaa";
|
|
|
84 stream2 >> msi;
|
|
|
85 O{} << X{};
|
|
|
86 I{} >> X{};
|
|
|
87 }
|
