libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_set_synop.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11, c++14
  10 // TODO: Change to XFAIL once https://github.com/llvm/llvm-project/issues/40340 is fixed
  11 // UNSUPPORTED: availability-pmr-missing
  12
  13 // <set>
  14
  15 // namespace std::pmr {
  16 // template <class V, class Compare = less<V> >
  17 // using set =
  18 //     ::std::set<V, Compare, polymorphic_allocator<V>>
  19 //
  20 // template <class V, class Compare = less<V> >
  21 // using multiset =
  22 //     ::std::multiset<V, Compare, polymorphic_allocator<V>>
  23 //
  24 // } // namespace std::pmr
  25
  26 #include <set>
  27 #include <memory_resource>
  28 #include <type_traits>
  29 #include <cassert>
  30
  31 int main(int, char**) {
  32   using V  = char;
  33   using DC = std::less<V>;
  34   using OC = std::greater<V>;
  35   {
  36     using StdSet = std::set<V, DC, std::pmr::polymorphic_allocator<V>>;
  37     using PmrSet = std::pmr::set<V>;
  38     static_assert(std::is_same<StdSet, PmrSet>::value, "");
  39   }
  40   {
  41     using StdSet = std::set<V, OC, std::pmr::polymorphic_allocator<V>>;
  42     using PmrSet = std::pmr::set<V, OC>;
  43     static_assert(std::is_same<StdSet, PmrSet>::value, "");
  44   }
  45   {
  46     std::pmr::set<int> m;
  47     assert(m.get_allocator().resource() == std::pmr::get_default_resource());
  48   }
  49   {
  50     using StdSet = std::multiset<V, DC, std::pmr::polymorphic_allocator<V>>;
  51     using PmrSet = std::pmr::multiset<V>;
  52     static_assert(std::is_same<StdSet, PmrSet>::value, "");
  53   }
  54   {
  55     using StdSet = std::multiset<V, OC, std::pmr::polymorphic_allocator<V>>;
  56     using PmrSet = std::pmr::multiset<V, OC>;
  57     static_assert(std::is_same<StdSet, PmrSet>::value, "");
  58   }
  59   {
  60     std::pmr::multiset<int> m;
  61     assert(m.get_allocator().resource() == std::pmr::get_default_resource());
  62   }
  63
  64   return 0;
  65 }