--- /dev/null
+// 2005-08-29 Paolo Carlini <pcarlini@suse.de>
+//
+// Copyright (C) 2005, 2009 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 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/>.
+
+#include <map>
+#include <stdexcept>
+#include <testsuite_hooks.h>
+
+// libstdc++/23578
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::map<int, double> map_type;
+
+ {
+ map_type m;
+ m[0] = 1.5;
+
+ double& rd = m.at(0);
+ VERIFY( rd == 1.5 );
+ try
+ {
+ m.at(1);
+ }
+ catch(std::out_of_range& obj)
+ {
+ // Expected.
+ }
+ catch(...)
+ {
+ // Failed.
+ throw;
+ }
+ }
+
+ {
+ map_type m;
+ m[1] = 2.5;
+ const map_type cm(m);
+
+ const double& crd = cm.at(1);
+ VERIFY( crd == 2.5 );
+ try
+ {
+ cm.at(0);
+ }
+ catch(std::out_of_range& obj)
+ {
+ // Expected.
+ }
+ catch(...)
+ {
+ // Failed.
+ throw;
+ }
+ }
+}
+
+int main()
+{
+ test01();
+ return 0;
+}