mirror of https://github.com/CGAL/cgal
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
// Copyright (c) 2004 Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
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// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
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// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; version 2.1 of the License.
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// See the file LICENSE.LGPL distributed with CGAL.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $Source$
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// $Revision$ $Date$
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// $Name$
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//
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// Author(s) : Menelaos Karavelas, Sylvain Pion
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// ---------------------------------------------------------------------
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// A short test program to evaluate a C++ compiler.
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// This program is used by cgal_configure.
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// The following documentation will be pasted in the generated configfile.
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// ---------------------------------------------------------------------
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//| This flag is set if the compiler doesn't support "using Base::Member;" in
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//| a derived class. The workaround is to write a forwarder.
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//| At least g++ 2.95 and SunPro CC 5.3 have this bug.
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template < typename T >
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void kill_unused_warning(const T&) {}
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struct A
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{
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int operator()(int a) const { return a; }
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};
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template<class T>
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struct B : public A
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{
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using A::operator();
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T operator()(const T& t) const
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{ return t+1; }
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};
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int main()
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{
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B<double> b;
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double d1(0), d2(0);
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d2 = b(d1);
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kill_unused_warning(d1);
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kill_unused_warning(d2);
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return 0;
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}
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