libstdc++-v3/testsuite/20_util/unique_ptr/54351.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2012-2023 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 // 20.7.1 Template class unique_ptr [unique.ptr]
  21
  22 #include <memory>
  23 #include <testsuite_hooks.h>
  24
  25 struct A;
  26
  27 struct B
  28 {
  29   std::unique_ptr<A> a;
  30 };
  31
  32 struct A
  33 {
  34   B* b;
  35   ~A() { VERIFY(b->a != nullptr); }
  36 };
  37
  38 void test01()
  39 {
  40   B b;
  41   b.a.reset(new A);
  42   b.a->b = &b;
  43 }
  44
  45 struct C;
  46
  47 struct D
  48 {
  49   std::unique_ptr<C[]> c;
  50 };
  51
  52 struct C
  53 {
  54   D* d;
  55   ~C() { VERIFY(d->c != nullptr); }
  56 };
  57
  58 void test02()
  59 {
  60   D d;
  61   d.c.reset(new C[1]);
  62   d.c[0].d = &d;
  63 }
  64
  65 int main()
  66 {
  67   test01();
  68   test02();
  69 }