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// -*- C++ -*-
// Exception testing utils for the C++ library testsuite.
//
// Copyright (C) 2007, 2008 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.
//
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include <exception>
#include <testsuite_hooks.h>
#ifndef _TESTSUITE_API
#define _TESTSUITE_API 1
namespace __gnu_test
{
// Checks for virtual public derivation in exception classes.
// See:
// http://www.boost.org/more/error_handling.html
struct bad_non_virtual : virtual public std::exception { };
template<typename Exception, bool DefaultCons>
struct diamond_derivation_base;
template<typename Exception>
struct diamond_derivation_base<Exception, true>
{
struct diamond_derivation_error
: bad_non_virtual, Exception
{
diamond_derivation_error()
: bad_non_virtual(), Exception() { }
};
};
template<typename Exception>
struct diamond_derivation_base<Exception, false>
{
struct diamond_derivation_error
: bad_non_virtual, Exception
{
diamond_derivation_error()
: bad_non_virtual(), Exception("construct diamond") { }
};
};
template<typename Exception, bool DefaultCons>
struct diamond_derivation
: diamond_derivation_base<Exception, DefaultCons>
{
typedef diamond_derivation_base<Exception, DefaultCons> base_type;
typedef typename base_type::diamond_derivation_error error_type;
// NB: In the libstdc++-v3 testsuite, all the standard exception
// classes (+ a couple of extensions) are checked: since they
// all derive *non* virtually from std::exception, the expected
// behavior is ambiguity.
static void test()
{
bool test __attribute__((unused)) = true;
try
{ throw error_type(); }
catch (std::exception const&)
{ VERIFY( false ); }
catch (...)
{ VERIFY( true ); }
}
};
// Testing type requirements for template arguments.
struct NonDefaultConstructible
{
NonDefaultConstructible(int) { }
NonDefaultConstructible(const NonDefaultConstructible&) { }
#ifdef __GXX_EXPERIMENTAL_CXX0X__
// For std::iota.
NonDefaultConstructible&
operator++()
{ return *this; }
#endif
};
// See: 20.1.1 Template argument requirements.
inline bool
operator==(const NonDefaultConstructible&, const NonDefaultConstructible&)
{ return false; }
inline bool
operator<(const NonDefaultConstructible&, const NonDefaultConstructible&)
{ return false; }
// For 26 numeric algorithms requirements, need addable,
// subtractable, multiplicable.
inline NonDefaultConstructible
operator+(const NonDefaultConstructible& lhs,
const NonDefaultConstructible& rhs)
{ return NonDefaultConstructible(1); }
inline NonDefaultConstructible
operator-(const NonDefaultConstructible& lhs,
const NonDefaultConstructible& rhs)
{ return NonDefaultConstructible(1); }
inline NonDefaultConstructible
operator*(const NonDefaultConstructible& lhs,
const NonDefaultConstructible& rhs)
{ return NonDefaultConstructible(1); }
// Like unary_function, but takes no argument. (ie, void).
// Used for generator template parameter.
template<typename _Result>
struct void_function
{
typedef _Result result_type;
result_type
operator()() const
{ return result_type(); }
};
template<>
struct void_function<NonDefaultConstructible>
{
typedef NonDefaultConstructible result_type;
result_type
operator()() const
{ return result_type(2); }
};
}
#endif
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