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// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
10
11// XFAIL: FROZEN-CXX03-HEADERS-FIXME
12
13// <string_view>
14// ... manipulating sequences of any non-array trivial standard-layout types.
15
16#include <string>
17#include <type_traits>
18#include "../basic.string/test_traits.h"
19
20struct NotTriviallyCopyable {
21 int value;
22 NotTriviallyCopyable& operator=(const NotTriviallyCopyable& other) {
23 value = other.value;
24 return *this;
25 }
26};
27
28struct NotTriviallyDefaultConstructible {
29 NotTriviallyDefaultConstructible() : value(3) {}
30 int value;
31};
32
33struct NotStandardLayout {
34public:
35 NotStandardLayout() : one(1), two(2) {}
36 int sum() const { return one + two; } // silences "unused field 'two' warning"
37 int one;
38
39private:
40 int two;
41};
42
43int main(int, char**) {
44 {
45 // array
46 typedef char C[3];
47 static_assert(std::is_array<C>::value, "");
48 std::basic_string_view<C, test_traits<C> > sv;
49 // expected-error-re@string_view:* {{static assertion failed{{.*}}Character type of basic_string_view must not be an array}}
50 }
51
52 {
53 // not trivially copyable
54 static_assert(!std::is_trivially_copyable<NotTriviallyCopyable>::value, "");
55 std::basic_string_view<NotTriviallyCopyable, test_traits<NotTriviallyCopyable> > s;
56 // expected-error-re@*:* {{static assertion failed{{.*}}Character type of basic_string_view must be trivially copyable}}
57 }
58
59 {
60 // not trivially default constructible
61 static_assert(!std::is_trivially_default_constructible<NotTriviallyDefaultConstructible>::value, "");
62 std::basic_string_view<NotTriviallyDefaultConstructible, test_traits<NotTriviallyDefaultConstructible> > sv;
63 // expected-error-re@string_view:* {{static assertion failed{{.*}}Character type of basic_string_view must be trivially default constructible}}
64 }
65
66 {
67 // not standard layout
68 static_assert(!std::is_standard_layout<NotStandardLayout>::value, "");
69 std::basic_string_view<NotStandardLayout, test_traits<NotStandardLayout> > sv;
70 // expected-error-re@string_view:* {{static assertion failed{{.*}}Character type of basic_string_view must be standard-layout}}
71 }
72
73 return 0;
74}
75

source code of libcxx/test/std/strings/string.view/char.bad.verify.cpp