libstdc++-v3/testsuite/23_containers/map/allocator/default_init.cc

   1 // Copyright (C) 2017-2024 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19 // { dg-options "-O0" }
  20
  21 #include <map>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_allocator.h>
  24
  25 #include <ext/aligned_buffer.h>
  26
  27 using T = int;
  28
  29 using __gnu_test::default_init_allocator;
  30
  31 void test01()
  32 {
  33   typedef default_init_allocator<std::pair<const T, T>> alloc_type;
  34   typedef std::map<T, T, std::less<T>, alloc_type> test_type;
  35
  36   __gnu_cxx::__aligned_buffer<test_type> buf;
  37   __builtin_memset(buf._M_addr(), ~0, sizeof(test_type));
  38
  39   test_type *tmp = ::new(buf._M_addr()) test_type;
  40
  41   VERIFY( tmp->get_allocator().state == 0 );
  42
  43   tmp->~test_type();
  44 }
  45
  46 void test02()
  47 {
  48   typedef default_init_allocator<std::pair<const T, T>> alloc_type;
  49   typedef std::map<T, T, std::less<T>, alloc_type> test_type;
  50
  51   __gnu_cxx::__aligned_buffer<test_type> buf;
  52   __builtin_memset(buf._M_addr(), ~0, sizeof(test_type));
  53
  54   test_type *tmp = ::new(buf._M_addr()) test_type();
  55
  56   VERIFY( tmp->get_allocator().state == 0 );
  57
  58   tmp->~test_type();
  59 }
  60
  61 int main()
  62 {
  63   test01();
  64   test02();
  65   return 0;
  66 }