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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 // <map>
     11 
     12 // map()
     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 #include <map>
     21 #include <cassert>
     22 
     23 #include "MoveOnly.h"
     24 #include "test_allocator.h"
     25 
     26 template <class T>
     27 struct some_comp
     28 {
     29     typedef T value_type;
     30     some_comp();
     31 };
     32 
     33 int main()
     34 {
     35 #if __has_feature(cxx_noexcept)
     36     {
     37         typedef std::map<MoveOnly, MoveOnly> C;
     38         static_assert(std::is_nothrow_default_constructible<C>::value, "");
     39     }
     40     {
     41         typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
     42         static_assert(std::is_nothrow_default_constructible<C>::value, "");
     43     }
     44     {
     45         typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
     46         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
     47     }
     48     {
     49         typedef std::map<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
     50         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
     51     }
     52 #endif
     53 }
     54