re PR libstdc++/26132 (tr1/hashtable: rehash not implemented)

2006-02-22  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/26132
	* include/tr1/hashtable (hashtable<>::rehash): Define.
	* testsuite/tr1/6_containers/unordered/hashtable/26132.cc: New.

	* include/tr1/hashtable: Trivial formatting and stylistic fixes.

	* testsuite/tr1/headers.cc: remove <tr1/hashtable>, not a tr1 header,
	only an implementation detail.

From-SVN: r111366

1 files changed, 58 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/tr1/6_containers/unordered/hashtable/26132.cc b/libstdc++-v3/testsuite/tr1/6_containers/unordered/hashtable/26132.cc
new file mode 100644
index 00000000000..9d0076e9698
--- /dev/null
+++ b/libstdc++-v3/testsuite/tr1/6_containers/unordered/hashtable/26132.cc
@@ -0,0 +1,58 @@
+// 2006-02-22  Paolo Carlini  <pcarlini@suse.de>
+//
+// Copyright (C) 2006 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// 6.3 Unordered associative containers
+
+#include <tr1/unordered_set>
+#include <testsuite_hooks.h>
+
+// libstdc++/26132
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  for (float lf = 1.0; lf < 101.0; lf *= 10.0)
+    for (int size = 1; size <= 6561; size *= 3)
+      {
+	std::tr1::unordered_set<int> us1;
+	typedef std::tr1::unordered_set<int>::size_type size_type;
+	
+	us1.max_load_factor(10.0);
+
+	for (int i = 0; i < size; ++i)
+	  us1.insert(i);
+
+	us1.max_load_factor(lf);
+
+	for (int i = 1; i <= 6561; i *= 81)
+	  {
+	    const size_type n = size * 81 / i;
+	    us1.rehash(n);
+	    VERIFY( us1.bucket_count() > us1.size() / us1.max_load_factor() );
+	    VERIFY( us1.bucket_count() >= n );
+	  }
+      }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}