libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/reset.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 // <memory>
  10
  11 // template <class X> class auto_ptr;
  12
  13 // void reset(X* p=0) throw();
  14
  15 // REQUIRES: c++03 || c++11 || c++14
  16 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
  17
  18 #include <memory>
  19 #include <cassert>
  20
  21 #include "test_macros.h"
  22 #include "../A.h"
  23
  24 void
  25 test()
  26 {
  27     {
  28     A* p = new A(1);
  29     std::auto_ptr<A> ap(p);
  30     ap.reset();
  31     assert(ap.get() == 0);
  32     assert(A::count == 0);
  33     }
  34     assert(A::count == 0);
  35     {
  36     A* p = new A(1);
  37     std::auto_ptr<A> ap(p);
  38     ap.reset(p);
  39     assert(ap.get() == p);
  40     assert(A::count == 1);
  41     }
  42     assert(A::count == 0);
  43     {
  44     A* p = new A(1);
  45     std::auto_ptr<A> ap(p);
  46     A* p2 = new A(2);
  47     ap.reset(p2);
  48     assert(ap.get() == p2);
  49     assert(A::count == 1);
  50     }
  51     assert(A::count == 0);
  52 }
  53
  54 int main(int, char**)
  55 {
  56     test();
  57
  58   return 0;
  59 }