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      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 // <string>
     11 
     12 // ~basic_string() // implied noexcept;
     13 
     14 #include <string>
     15 #include <cassert>
     16 
     17 #include "test_allocator.h"
     18 
     19 #if __has_feature(cxx_noexcept)
     20 
     21 template <class T>
     22 struct some_alloc
     23 {
     24     typedef T value_type;
     25     some_alloc(const some_alloc&);
     26     ~some_alloc() noexcept(false);
     27 };
     28 
     29 #endif
     30 
     31 int main()
     32 {
     33 #if __has_feature(cxx_noexcept)
     34     {
     35         typedef std::string C;
     36         static_assert(std::is_nothrow_destructible<C>::value, "");
     37     }
     38     {
     39         typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> C;
     40         static_assert(std::is_nothrow_destructible<C>::value, "");
     41     }
     42     {
     43         typedef std::basic_string<char, std::char_traits<char>, some_alloc<char>> C;
     44         static_assert(!std::is_nothrow_destructible<C>::value, "");
     45     }
     46 #endif
     47 }
     48