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 // <string_view>
12 // ... manipulating sequences of any non-array trivial standard-layout types.
13
14 #include <string>
15 #include "../basic.string/test_traits.h"
16
17 struct NotTrivial {
NotTrivialNotTrivial18 NotTrivial() : value(3) {}
19 int value;
20 };
21
22 struct NotStandardLayout {
23 public:
NotStandardLayoutNotStandardLayout24 NotStandardLayout() : one(1), two(2) {}
sumNotStandardLayout25 int sum() const { return one + two; } // silences "unused field 'two' warning"
26 int one;
27
28 private:
29 int two;
30 };
31
main(int,char **)32 int main(int, char**) {
33 {
34 // array
35 typedef char C[3];
36 static_assert(std::is_array<C>::value, "");
37 std::basic_string_view<C, test_traits<C> > sv;
38 // expected-error-re@string_view:* {{static assertion failed{{.*}}Character type of basic_string_view must not be an array}}
39 }
40
41 {
42 // not trivial
43 static_assert(!std::is_trivial<NotTrivial>::value, "");
44 std::basic_string_view<NotTrivial, test_traits<NotTrivial> > sv;
45 // expected-error-re@string_view:* {{static assertion failed{{.*}}Character type of basic_string_view must be trivial}}
46 }
47
48 {
49 // not standard layout
50 static_assert(!std::is_standard_layout<NotStandardLayout>::value, "");
51 std::basic_string_view<NotStandardLayout, test_traits<NotStandardLayout> > sv;
52 // expected-error-re@string_view:* {{static assertion failed{{.*}}Character type of basic_string_view must be standard-layout}}
53 }
54
55 return 0;
56 }
57