libstdc++-v3/testsuite/20_util/pair/requirements/dr801.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2010-2023 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <memory>
  21 #include <type_traits>
  22
  23 // DR 801, pair and tuple vs. "passed in registers"
  24 void test_trivial()
  25 {
  26   // PODType, TType, NType, SLType, LType, NLType, LTypeDerived
  27   typedef std::pair<int, int> pair_type;
  28   // static_assert(std::is_literal_type<pair_type>::value, "! literal");
  29   static_assert(std::is_trivially_copy_constructible<pair_type>::value,
  30                 "! triv copy");
  31   static_assert(std::is_trivially_destructible<pair_type>::value,
  32                 "! triv destructor");
  33   // static_assert(std::is_standard_layout<pair_type>::value,
  34   //               "! standard layout");
  35
  36   // Negative
  37   /*
  38   static_assert(std::is_trivial<pair_type>::value, "! triv");
  39   static_assert(std::is_pod<pair_type>::value, "! pod");
  40   */
  41 }
  42
  43 int main()
  44 {
  45   test_trivial();
  46   return 0;
  47 }