libstdc++-v3/testsuite/20_util/unique_ptr/cons/pointer_array.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2008-2023 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 <testsuite_hooks.h>
  22
  23 struct A
  24 {
  25   A() { ++ctor_count; }
  26   virtual ~A() { ++dtor_count; }
  27   static long ctor_count;
  28   static long dtor_count;
  29 };
  30 long A::ctor_count = 0;
  31 long A::dtor_count = 0;
  32
  33 struct B : A
  34 {
  35   B() { ++ctor_count; }
  36   virtual ~B() { ++dtor_count; }
  37   static long ctor_count;
  38   static long dtor_count;
  39 };
  40 long B::ctor_count = 0;
  41 long B::dtor_count = 0;
  42
  43
  44 struct reset_count_struct
  45 {
  46   ~reset_count_struct()
  47   {
  48     A::ctor_count = 0;
  49     A::dtor_count = 0;
  50     B::ctor_count = 0;
  51     B::dtor_count = 0;
  52   }
  53 };
  54
  55
  56 // 20.4.5.1 unique_ptr constructors [unique.ptr.cons]
  57
  58 // Construction from pointer
  59 void
  60 test01()
  61 {
  62   reset_count_struct __attribute__((unused)) reset;
  63
  64   std::unique_ptr<A[]> A_default;
  65   VERIFY( A_default.get() == 0 );
  66   VERIFY( A::ctor_count == 0 );
  67   VERIFY( A::dtor_count == 0 );
  68   VERIFY( B::ctor_count == 0 );
  69   VERIFY( B::dtor_count == 0 );
  70
  71   std::unique_ptr<A[]> A_from_A(new A[3]);
  72   VERIFY( A_from_A.get() != 0 );
  73   VERIFY( A::ctor_count == 3 );
  74   VERIFY( A::dtor_count == 0 );
  75   VERIFY( B::ctor_count == 0 );
  76   VERIFY( B::dtor_count == 0 );
  77 }
  78
  79 int
  80 main()
  81 {
  82   test01();
  83   return 0;
  84 }