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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 // <set>
     11 
     12 // multiset()
     13 //    noexcept(
     14 //        is_nothrow_default_constructible<allocator_type>::value &&
     15 //        is_nothrow_default_constructible<key_compare>::value &&
     16 //        is_nothrow_copy_constructible<key_compare>::value);
     17 
     18 // This tests a conforming extension
     19 
     20 // UNSUPPORTED: c++98, c++03
     21 
     22 #include <set>
     23 #include <cassert>
     24 
     25 #include "test_macros.h"
     26 #include "MoveOnly.h"
     27 #include "test_allocator.h"
     28 
     29 template <class T>
     30 struct some_comp
     31 {
     32     typedef T value_type;
     33     some_comp();
     34     bool operator()(const T&, const T&) const { return false; }
     35 };
     36 
     37 int main()
     38 {
     39 #if defined(_LIBCPP_VERSION)
     40     {
     41         typedef std::multiset<MoveOnly> C;
     42         static_assert(std::is_nothrow_default_constructible<C>::value, "");
     43     }
     44     {
     45         typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
     46         static_assert(std::is_nothrow_default_constructible<C>::value, "");
     47     }
     48 #endif // _LIBCPP_VERSION
     49     {
     50         typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
     51         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
     52     }
     53     {
     54         typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;
     55         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
     56     }
     57 }
     58