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+// 2004-11-29 Paolo Carlini <pcarlini@suse.de>
+
+// Copyright (C) 2004, 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/>.
+
+// 21.3.3 string capacity
+
+#include <string>
+#include <testsuite_hooks.h>
+
+// libstdc++/18654
+void test01()
+{
+ using namespace std;
+ bool test __attribute__((unused)) = true;
+
+ typedef wstring::size_type size_type;
+
+ // Our current implementation provides exact shrink-to-size
+ // and shrink-to-fit (in the future, maybe this will change
+ // for short strings).
+ const size_type minsize = 2 << 0;
+ const size_type maxsize = 2 << 20;
+ for (size_type i = minsize; i <= maxsize; i *= 2)
+ {
+ wstring str(i, L'x');
+ str.reserve(3 * i);
+
+ str.reserve(2 * i);
+ VERIFY( str.capacity() == 2 * i );
+
+ str.reserve();
+ VERIFY( str.capacity() == i );
+ }
+}
+
+int main()
+{
+ test01();
+ return 0;
+}