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
|
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <string>
// basic_string() noexcept(is_nothrow_default_constructible<allocator_type>::value); // constexpr since C++20
#include <cassert>
#include <string>
#include "test_macros.h"
#include "test_allocator.h"
#include "asan_testing.h"
#if TEST_STD_VER >= 11
// Test the noexcept specification, which is a conforming extension
LIBCPP_STATIC_ASSERT(std::is_nothrow_default_constructible<std::string>::value, "");
LIBCPP_STATIC_ASSERT(std::is_nothrow_default_constructible<
std::basic_string<char, std::char_traits<char>, test_allocator<char>>>::value,
"");
LIBCPP_STATIC_ASSERT(!std::is_nothrow_default_constructible<
std::basic_string<char, std::char_traits<char>, limited_allocator<char, 10>>>::value,
"");
#endif
TEST_CONSTEXPR_CXX20 bool test() {
std::string str;
assert(str.empty());
LIBCPP_ASSERT(is_string_asan_correct(str));
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}
|
