Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / 20_util / shared_ptr / cons / alias.cc

diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/cons/alias.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/cons/alias.cc
new file mode 100644 (file)
index 0000000..9c39ed5
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/cons/alias.cc
@@ -0,0 +1,107 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2007, 2009 Free Software Foundation
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 20.6.6.2 Template class shared_ptr [util.smartptr.shared]
+
+#include <memory>
+#include <testsuite_hooks.h>
+
+struct A
+{
+  A() : i() { }
+  virtual ~A() { }
+  int i;
+};
+
+struct B : A
+{
+  B() : A(), a() { }
+  virtual ~B() { }
+  A a;
+};
+
+void deletefunc(A* p) { delete p; }
+
+// 20.6.6.2.1 shared_ptr constructors [util.smartptr.shared.const]
+
+// Aliasing constructors
+
+int test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::shared_ptr<A> a;
+  std::shared_ptr<bool> b1(a, &test);
+  VERIFY( b1.use_count() == 0 );
+  VERIFY( a.get() == 0 );
+  VERIFY( b1.get() == &test );
+
+  std::shared_ptr<bool> b2(b1);
+  VERIFY( b2.use_count() == 0 );
+  VERIFY( b1.get() == b2.get() );
+
+  return 0;
+}
+
+int
+test02()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::shared_ptr<A> a(new A);
+  std::shared_ptr<int> i1(a, &a->i);
+  VERIFY( i1.use_count() == 2 );
+
+  std::shared_ptr<int> i2(i1);
+  VERIFY( i2.use_count() == 3 );
+  VERIFY( i2.get() == &a->i );
+
+  return 0;
+}
+
+int
+test03()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::shared_ptr<B> b(new B);
+  std::shared_ptr<A> a1(b, b.get());
+  std::shared_ptr<A> a2(b, &b->a);
+  VERIFY( a2.use_count() == 3 );
+  VERIFY( a1 == b );
+  VERIFY( a2 != b );
+  VERIFY( a1.get() != a2.get() );
+
+  std::shared_ptr<A> a3(a1);
+  VERIFY( a3 == b );
+
+  a3 = a2;
+  VERIFY( a3.get() == &b->a );
+
+  return 0;
+}
+
+int
+main()
+{
+  test01();
+  test02();
+  test03();
+  return 0;
+}