text: //===----------------------------------------------------------------------===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is dual licensed under the MIT and the University of Illinois Open
  // Source Licenses. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  
  // <tuple>
  
  // template <class... Types> class tuple;
  
  // template <class Alloc>
  //   tuple(allocator_arg_t, const Alloc& a);
  
  #include <tuple>
  #include <cassert>
  
  #include "../DefaultOnly.h"
  #include "../allocators.h"
  #include "../alloc_first.h"
  #include "../alloc_last.h"
  
  int main()
  {
      {
          std::tuple<> t(std::allocator_arg, A1<int>());
      }
      {
          std::tuple<int> t(std::allocator_arg, A1<int>());
          assert(std::get<0>(t) == 0);
      }
      {
          std::tuple<DefaultOnly> t(std::allocator_arg, A1<int>());
          assert(std::get<0>(t) == DefaultOnly());
      }
      {
          assert(!alloc_first::allocator_constructed);
          std::tuple<alloc_first> t(std::allocator_arg, A1<int>(5));
          assert(alloc_first::allocator_constructed);
          assert(std::get<0>(t) == alloc_first());
      }
      {
          assert(!alloc_last::allocator_constructed);
          std::tuple<alloc_last> t(std::allocator_arg, A1<int>(5));
          assert(alloc_last::allocator_constructed);
          assert(std::get<0>(t) == alloc_last());
      }
      {
          alloc_first::allocator_constructed = false;
          std::tuple<DefaultOnly, alloc_first> t(std::allocator_arg, A1<int>(5));
          assert(std::get<0>(t) == DefaultOnly());
          assert(alloc_first::allocator_constructed);
          assert(std::get<1>(t) == alloc_first());
      }
      {
          alloc_first::allocator_constructed = false;
          alloc_last::allocator_constructed = false;
          std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
                                                             A1<int>(5));
          assert(std::get<0>(t) == DefaultOnly());
          assert(alloc_first::allocator_constructed);
          assert(std::get<1>(t) == alloc_first());
          assert(alloc_last::allocator_constructed);
          assert(std::get<2>(t) == alloc_last());
      }
      {
          alloc_first::allocator_constructed = false;
          alloc_last::allocator_constructed = false;
          std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
                                                             A2<int>(5));
          assert(std::get<0>(t) == DefaultOnly());
          assert(!alloc_first::allocator_constructed);
          assert(std::get<1>(t) == alloc_first());
          assert(!alloc_last::allocator_constructed);
          assert(std::get<2>(t) == alloc_last());
      }
  }
  