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
|
//===----------------------------------------------------------------------===//
//
// 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, c++17
// <array>
// LWG-3382 NTTP for pair and array:
// array<T, N> is a structural type ([temp.param]) if T is a structural type.
#include <array>
#include <cstddef>
#include <string>
struct LiteralBase {};
struct LiteralNSDM {};
struct LiteralType : LiteralBase {
LiteralNSDM nsdm;
};
struct NotALiteral {
NotALiteral() {}
};
int i;
NotALiteral not_a_literal;
namespace test_full_type {
template <class T, std::size_t S, std::array<T, S> A>
struct test {};
using A = test<int, 2, std::array{2, 3}>;
using B = test<LiteralType, 0, std::array<LiteralType, 0>{}>;
using C = test<int*, 1, std::array<int*, 1>{&i}>;
using D = test<NotALiteral*, 1, std::array<NotALiteral*, 1>{¬_a_literal}>;
using E = test<NotALiteral, 1, std::array<NotALiteral, 1>{}>;
// expected-error-re@*:* {{non-type template parameter has non-literal type 'std::array<NotALiteral, 1U{{L{0,2}.*}}>'}}
using F = test<std::string, 2, std::array<std::string, 2>{}>;
// expected-error-re@*:* {{type 'std::array<{{(std::)?}}string, 2U{{L{0,2}.*}}>' {{(\(aka 'array<basic_string<char>, 2UL{0,2}>'\) )?}}of non-type template parameter is not a structural type}}
} // namespace test_full_type
namespace test_ctad {
template <std::array A>
struct test {};
using A = test<std::array{2, 3}>;
using B = test<std::array<LiteralType, 0>{}>;
using C = test<std::array<int*, 1>{&i}>;
using D = test<std::array<NotALiteral*, 1>{¬_a_literal}>;
using E = test<std::array<NotALiteral, 1>{}>;
// expected-error@-1 {{non-type template parameter has non-literal type 'std::array<NotALiteral, 1>'}}
using F = test<std::array<std::string, 2>{}>;
// expected-error@-1 {{type 'std::array<string, 2>' (aka 'std::array<std::string, 2>') of non-type template parameter is not a structural type}}
} // namespace test_ctad
namespace test_auto {
template <auto A>
struct test {};
using A = test<std::array{2, 3}>;
using B = test<std::array<LiteralType, 0>{}>;
using C = test<std::array<int*, 1>{&i}>;
using D = test<std::array<NotALiteral*, 1>{¬_a_literal}>;
using E = test<std::array<NotALiteral, 1>{}>;
// expected-error@-1 {{non-type template parameter has non-literal type 'std::array<NotALiteral, 1>'}}
using F = test<std::array<std::string, 2>{}>;
// expected-error@-1 {{type 'std::array<std::string, 2>' (aka 'array<basic_string<char>, 2>') of non-type template parameter is not a structural type}}
} // namespace test_auto
|
