1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // UNSUPPORTED: c++98, c++03
11 
12 // <string>
13 
14 // ~basic_string() // implied noexcept;
15 
16 #include <string>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 #include "test_allocator.h"
21 
22 template <class T>
23 struct throwing_alloc
24 {
25     typedef T value_type;
26     throwing_alloc(const throwing_alloc&);
27     T *allocate(size_t);
28     ~throwing_alloc() noexcept(false);
29 };
30 
31 // Test that it's possible to take the address of basic_string's destructors
32 // by creating globals which will register their destructors with cxa_atexit.
33 std::string s;
34 std::wstring ws;
35 
main()36 int main()
37 {
38     {
39         typedef std::string C;
40         static_assert(std::is_nothrow_destructible<C>::value, "");
41     }
42     {
43         typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> C;
44         static_assert(std::is_nothrow_destructible<C>::value, "");
45     }
46 #if defined(_LIBCPP_VERSION)
47     {
48         typedef std::basic_string<char, std::char_traits<char>, throwing_alloc<char>> C;
49         static_assert(!std::is_nothrow_destructible<C>::value, "");
50     }
51 #endif // _LIBCPP_VERSION
52 }
53