1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <istream>
10 
11 // template <class charT, class traits = char_traits<charT> >
12 // class basic_istream;
13 
14 // basic_istream(basic_istream const& rhs) = delete;
15 // basic_istream& operator=(basic_istream const&) = delete;
16 
17 #include <istream>
18 #include <type_traits>
19 #include <cassert>
20 
21 struct test_istream
22     : public std::basic_istream<char>
23 {
24     typedef std::basic_istream<char> base;
25 
test_istreamtest_istream26     test_istream(test_istream&& s)
27         : base(std::move(s)) // OK
28     {
29     }
30 
operator =test_istream31     test_istream& operator=(test_istream&& s) {
32       base::operator=(std::move(s)); // OK
33       return *this;
34     }
35 
test_istreamtest_istream36     test_istream(test_istream const& s)
37         : base(s) // expected-error {{call to deleted constructor of 'std::basic_istream<char>'}}
38     {
39     }
40 
operator =test_istream41     test_istream& operator=(test_istream const& s) {
42       base::operator=(s); // expected-error {{call to deleted member function 'operator='}}
43       return *this;
44     }
45 
46 };
47 
main(int,char **)48 int main(int, char**)
49 {
50   return 0;
51 }
52