1 files changed, 83 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/23_containers/forward_list/debug/swap.cc b/libstdc++-v3/testsuite/23_containers/forward_list/debug/swap.cc
new file mode 100644
index 00000000000..0105791bedc
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+++ b/libstdc++-v3/testsuite/23_containers/forward_list/debug/swap.cc
@@ -0,0 +1,83 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2010 Free Software Foundation, Inc.
+//
+// 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 Pred 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/>.
+
+// Check that iterators ownership is correctly manage on swap.
+#include <vector>
+#include <forward_list>
+#include <iostream>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+  std::forward_list<int> fl1{1, 3, 5};
+  std::forward_list<int> fl2{2, 4, 6};
+
+  std::vector<std::forward_list<int>::iterator> fl1_its;
+  fl1_its.push_back(fl1.before_begin());
+  for (std::forward_list<int>::iterator it = fl1.begin();
+       it != fl1.end(); ++it)
+    {
+      fl1_its.push_back(it);
+    }
+  fl1_its.push_back(fl1.end());
+
+  std::vector<std::forward_list<int>::iterator> fl2_its;
+  fl2_its.push_back(fl2.before_begin());
+  for (std::forward_list<int>::iterator it = fl2.begin();
+       it != fl2.end(); ++it)
+    {
+      fl2_its.push_back(it);
+    }
+  fl2_its.push_back(fl2.end());
+
+  fl1.swap(fl2);
+
+  auto fit = fl1.before_begin();
+  // before-begin iterator is not transfered:
+  // TODO: Validate with LWG group how before begin should be
+  // treated.
+#if !_GLIBCXX_DEBUG
+  VERIFY( fit == fl1_its[0] );
+#endif
+  // All others are, even paste-the-end one:
+  for (size_t i = 1; i != fl2_its.size(); ++i)
+  {
+    VERIFY( ++fit == fl2_its[i] );
+  }
+
+  fit = fl2.before_begin();
+  // TODO: Validate with LWG group how before begin should be
+  // treated.
+#if !_GLIBCXX_DEBUG
+  VERIFY( fit == fl2_its[0] );
+#endif
+  for (size_t i = 1; i != fl1_its.size(); ++i)
+  {
+    VERIFY( ++fit == fl1_its[i] );
+  }
+}
+
+int
+main()
+{
+  test01();
+  return 0;
+}