1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// <unordered_set>
// template<class InputIterator,
// class Hash = hash<iter-value-type<InputIterator>>,
// class Pred = equal_to<iter-value-type<InputIterator>>,
// class Allocator = allocator<iter-value-type<InputIterator>>>
// unordered_set(InputIterator, InputIterator, typename see below::size_type = see below,
// Hash = Hash(), Pred = Pred(), Allocator = Allocator())
// -> unordered_set<iter-value-type<InputIterator>,
// Hash, Pred, Allocator>;
//
// template<class T, class Hash = hash<T>,
// class Pred = equal_to<T>, class Allocator = allocator<T>>
// unordered_set(initializer_list<T>, typename see below::size_type = see below,
// Hash = Hash(), Pred = Pred(), Allocator = Allocator())
// -> unordered_set<T, Hash, Pred, Allocator>;
//
// template<class InputIterator, class Allocator>
// unordered_set(InputIterator, InputIterator, typename see below::size_type, Allocator)
// -> unordered_set<iter-value-type<InputIterator>,
// hash<iter-value-type<InputIterator>>,
// equal_to<iter-value-type<InputIterator>>,
// Allocator>;
//
// template<class InputIterator, class Hash, class Allocator>
// unordered_set(InputIterator, InputIterator, typename see below::size_type,
// Hash, Allocator)
// -> unordered_set<iter-value-type<InputIterator>, Hash,
// equal_to<iter-value-type<InputIterator>>,
// Allocator>;
//
// template<class T, class Allocator>
// unordered_set(initializer_list<T>, typename see below::size_type, Allocator)
// -> unordered_set<T, hash<T>, equal_to<T>, Allocator>;
//
// template<class T, class Hash, class Allocator>
// unordered_set(initializer_list<T>, typename see below::size_type, Hash, Allocator)
// -> unordered_set<T, Hash, equal_to<T>, Allocator>;
#include <functional>
#include <unordered_set>
int main(int, char**)
{
{
// cannot deduce Key from nothing
std::unordered_set s;
// expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
}
{
// cannot deduce Key from just (Size)
std::unordered_set s(42);
// expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
}
{
// cannot deduce Key from just (Size, Hash)
std::unordered_set s(42, std::hash<int>());
// expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
}
{
// cannot deduce Key from just (Size, Hash, Pred)
std::unordered_set s(42, std::hash<int>(), std::equal_to<>());
// expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
}
{
// cannot deduce Key from just (Size, Hash, Pred, Allocator)
std::unordered_set s(42, std::hash<int>(), std::equal_to<>(), std::allocator<int>());
// expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
}
{
// cannot deduce Key from just (Allocator)
std::unordered_set s(std::allocator<int>{});
// expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
}
{
// cannot deduce Key from just (Size, Allocator)
std::unordered_set s(42, std::allocator<int>());
// expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
}
{
// cannot deduce Key from just (Size, Hash, Allocator)
std::unordered_set s(42, std::hash<short>(), std::allocator<int>());
// expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
}
return 0;
}
|
