--- /dev/null
+// 2007-02-22 Paolo Carlini <pcarlini@suse.de>
+//
+// Copyright (C) 2007, 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/>.
+
+// 6.3.4.3 Class template unordered_set
+
+#include <tr1/unordered_set>
+#include <string>
+#include <testsuite_hooks.h>
+
+// In the occasion of libstdc++/25896
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+
+ typedef std::tr1::unordered_set<std::string> Set;
+ typedef Set::iterator iterator;
+ typedef Set::const_iterator const_iterator;
+
+ Set s1;
+
+ s1.insert("because to why");
+ s1.insert("the stockholm syndrome");
+ s1.insert("a cereous night");
+ s1.insert("eeilo");
+ s1.insert("protean");
+ s1.insert("the way you are when");
+ s1.insert("tillsammans");
+ s1.insert("umbra/penumbra");
+ s1.insert("belonging (no longer mix)");
+ s1.insert("one line behind");
+ VERIFY( s1.size() == 10 );
+
+ VERIFY( s1.erase("eeilo") == 1 );
+ VERIFY( s1.size() == 9 );
+ iterator it1 = s1.find("eeilo");
+ VERIFY( it1 == s1.end() );
+
+ VERIFY( s1.erase("tillsammans") == 1 );
+ VERIFY( s1.size() == 8 );
+ iterator it2 = s1.find("tillsammans");
+ VERIFY( it2 == s1.end() );
+
+ // Must work (see DR 526)
+ iterator it3 = s1.find("belonging (no longer mix)");
+ VERIFY( it3 != s1.end() );
+ VERIFY( s1.erase(*it3) == 1 );
+ VERIFY( s1.size() == 7 );
+ it3 = s1.find("belonging (no longer mix)");
+ VERIFY( it3 == s1.end() );
+
+ VERIFY( !s1.erase("abra") );
+ VERIFY( s1.size() == 7 );
+
+ VERIFY( !s1.erase("eeilo") );
+ VERIFY( s1.size() == 7 );
+
+ VERIFY( s1.erase("because to why") == 1 );
+ VERIFY( s1.size() == 6 );
+ iterator it4 = s1.find("because to why");
+ VERIFY( it4 == s1.end() );
+
+ iterator it5 = s1.find("umbra/penumbra");
+ iterator it6 = s1.find("one line behind");
+ VERIFY( it5 != s1.end() );
+ VERIFY( it6 != s1.end() );
+
+ VERIFY( s1.find("the stockholm syndrome") != s1.end() );
+ VERIFY( s1.find("a cereous night") != s1.end() );
+ VERIFY( s1.find("the way you are when") != s1.end() );
+ VERIFY( s1.find("a cereous night") != s1.end() );
+
+ VERIFY( s1.erase(*it5) == 1 );
+ VERIFY( s1.size() == 5 );
+ it5 = s1.find("umbra/penumbra");
+ VERIFY( it5 == s1.end() );
+
+ VERIFY( s1.erase(*it6) == 1 );
+ VERIFY( s1.size() == 4 );
+ it6 = s1.find("one line behind");
+ VERIFY( it6 == s1.end() );
+
+ iterator it7 = s1.begin();
+ iterator it8 = it7;
+ ++it8;
+ iterator it9 = it8;
+ ++it9;
+
+ VERIFY( s1.erase(*it8) == 1 );
+ VERIFY( s1.size() == 3 );
+ VERIFY( ++it7 == it9 );
+
+ iterator it10 = it9;
+ ++it10;
+ iterator it11 = it10;
+
+ VERIFY( s1.erase(*it9) == 1 );
+ VERIFY( s1.size() == 2 );
+ VERIFY( ++it10 == s1.end() );
+
+ VERIFY( s1.erase(s1.begin()) != s1.end() );
+ VERIFY( s1.size() == 1 );
+ VERIFY( s1.begin() == it11 );
+
+ VERIFY( s1.erase(*s1.begin()) == 1 );
+ VERIFY( s1.size() == 0 );
+ VERIFY( s1.begin() == s1.end() );
+}
+
+int main()
+{
+ test01();
+ return 0;
+}