text: //===----------------------------------------------------------------------===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  
  // <map>
  // UNSUPPORTED: c++98, c++03, c++11, c++14
  // UNSUPPORTED: libcpp-no-deduction-guides
  // XFAIL: clang-6, apple-clang-9.0, apple-clang-9.1, apple-clang-10.0.0
  //  clang-6 gives different error messages.
  
  // template<class InputIterator,
  //          class Compare = less<iter-value-type<InputIterator>>,
  //          class Allocator = allocator<iter-value-type<InputIterator>>>
  // multimap(InputIterator, InputIterator,
  //          Compare = Compare(), Allocator = Allocator())
  //   -> multimap<iter-value-type<InputIterator>, Compare, Allocator>;
  // template<class Key, class Compare = less<Key>, class Allocator = allocator<Key>>
  // multimap(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
  //   -> multimap<Key, Compare, Allocator>;
  // template<class InputIterator, class Allocator>
  // multimap(InputIterator, InputIterator, Allocator)
  //   -> multimap<iter-value-type<InputIterator>, less<iter-value-type<InputIterator>>, Allocator>;
  // template<class Key, class Allocator>
  // multimap(initializer_list<Key>, Allocator)
  //   -> multimap<Key, less<Key>, Allocator>;
  
  #include <climits.hxx> // INT_MAX
  #include <functional.hxx>
  #include <map.hxx>
  #include <type_traits.hxx>
  
  struct NotAnAllocator {
      friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
  };
  
  using P = std::pair<int, long>;
  using PC = std::pair<const int, long>;
  
  int main(int, char**)
  {
      {
          // cannot deduce Key and T from nothing
          std::multimap m; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // cannot deduce Key and T from just (Compare)
          std::multimap m(std::less<int>{});
              // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // cannot deduce Key and T from just (Compare, Allocator)
          std::multimap m(std::less<int>{}, std::allocator<PC>{});
              // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // cannot deduce Key and T from just (Allocator)
          std::multimap m(std::allocator<PC>{});
              // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // refuse to rebind the allocator if Allocator::value_type is not exactly what we expect
          const P arr[] = { {1,1L}, {2,2L}, {3,3L} };
          std::multimap m(arr, arr + 3, std::allocator<P>());
              // expected-error-re@map:* {{static_assert failed{{( due to requirement '.*')?}} "Allocator::value_type must be same type as value_type"}}
      }
      {
          // cannot convert from some arbitrary unrelated type
          NotAnAllocator a;
          std::multimap m(a); // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // cannot deduce that the inner braced things should be std::pair and not something else
          std::multimap m{ {1,1L}, {2,2L}, {3,3L} };
              // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // cannot deduce that the inner braced things should be std::pair and not something else
          std::multimap m({ {1,1L}, {2,2L}, {3,3L} }, std::less<int>());
              // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // cannot deduce that the inner braced things should be std::pair and not something else
          std::multimap m({ {1,1L}, {2,2L}, {3,3L} }, std::less<int>(), std::allocator<PC>());
              // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // cannot deduce that the inner braced things should be std::pair and not something else
          std::multimap m({ {1,1L}, {2,2L}, {3,3L} }, std::allocator<PC>());
              // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // since we have parens, not braces, this deliberately does not find the initializer_list constructor
          std::multimap m(P{1,1L});
              // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
      {
          // since we have parens, not braces, this deliberately does not find the initializer_list constructor
          std::multimap m(PC{1,1L});
              // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
      }
  
      return 0;
  }
  