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15 Commits

Author SHA1 Message Date
4d917003e2 v2, v3, integration branch
[SVN r62649]
2010-06-09 11:34:33 +00:00
a991936c96 Made memset call in value_init conditional, see #3869. Updated the section "compiler issues" of its documentation.
[SVN r62307]
2010-05-30 09:19:09 +00:00
6239e685a2 value_init_test now uses lightweight_test by Peter Dimov; see #4246. Fernando Cacciola mailed me he agreed as well.
[SVN r62158]
2010-05-22 22:05:54 +00:00
e601fcb9c9 Locally disabled a trivial MSVC warning in value_init.hpp (C4512, "assignment operator could not be generated")
[SVN r62030]
2010-05-16 11:08:00 +00:00
f29a5db08e Hopefully fixed value_initialized compile errors on clang and comeau (strict mode) reported by Christopher Jefferson, see #4213
[SVN r61947]
2010-05-13 14:36:06 +00:00
22743ee125 Added boost::initialized<T> as was agreed at http://lists.boost.org/Archives/boost/2010/04/164916.php -- see #3472
[SVN r61883]
2010-05-09 20:51:24 +00:00
e3c982287a add tr1_result_of that always behaves as TR1 specifies, fix Boost.TR1's result_of to use tr1_result_of
[SVN r61248]
2010-04-13 15:01:11 +00:00
82e1111bb8 Revert [60052], as it causes other libraries to break.
[SVN r61097]
2010-04-06 07:56:54 +00:00
9339b32178 Updated copyright notice.
[SVN r61075]
2010-04-05 19:08:01 +00:00
3770221507 Hopefully fixed #3984 (std::bitset constructor issue). Tested by Juergen Hunold on msvc-10.0, msvc-9.0, and gcc-4.4. See thread starting at http://lists.boost.org/Archives/boost/2010/03/162690.php
[SVN r60331]
2010-03-07 21:42:22 +00:00
e6cb3a77ee Fix a couple of comments.
[SVN r60294]
2010-03-07 13:11:10 +00:00
bbccfbbab4 Remove use of deprecated macro in result_of test.
[SVN r60293]
2010-03-07 13:10:54 +00:00
74a6a693d3 Remove use of deprecated config macro in result_of.
[SVN r60052]
2010-03-01 19:39:52 +00:00
bf713ad47a Revert unintentional reference to "noncopyable_adl_barrier" test that's not checked in.
[SVN r59332]
2010-01-28 14:41:16 +00:00
76b17c497b Support different MS calling conventions, thanks to Nicolas Lelong.
Closes #3833.


[SVN r59247]
2010-01-24 02:08:46 +00:00
11 changed files with 559 additions and 134 deletions

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@ -10,7 +10,30 @@
# error Boost result_of - do not include this file!
#endif
#if defined(BOOST_HAS_DECLTYPE)
// CWPro8 requires an argument in a function type specialization
#if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3002)) && BOOST_PP_ITERATION() == 0
# define BOOST_RESULT_OF_ARGS void
#else
# define BOOST_RESULT_OF_ARGS BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)
#endif
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
template<typename F BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct tr1_result_of<F(BOOST_RESULT_OF_ARGS)>
: mpl::if_<
mpl::or_< is_pointer<F>, is_member_function_pointer<F> >
, boost::detail::tr1_result_of_impl<
typename remove_cv<F>::type,
typename remove_cv<F>::type(BOOST_RESULT_OF_ARGS),
(boost::detail::has_result_type<F>::value)>
, boost::detail::tr1_result_of_impl<
F,
F(BOOST_RESULT_OF_ARGS),
(boost::detail::has_result_type<F>::value)> >::type { };
#endif
#if !defined(BOOST_NO_DECLTYPE) && defined(BOOST_RESULT_OF_USE_DECLTYPE)
// As of N2588, C++0x result_of only supports function call
// expressions of the form f(x). This precludes support for member
@ -21,11 +44,11 @@ template<typename F BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
struct result_of<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T))>
: mpl::if_<
mpl::or_< is_pointer<F>, is_member_function_pointer<F> >
, detail::result_of_impl<
, detail::tr1_result_of_impl<
typename remove_cv<F>::type,
typename remove_cv<F>::type(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), false
>
, detail::result_of_decltype_impl<
, detail::cpp0x_result_of_impl<
F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T))
>
>::type
@ -39,7 +62,7 @@ namespace detail {
template<typename F BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),typename T)>
class result_of_decltype_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T))>
class cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T))>
{
static F f;
BOOST_PP_REPEAT(BOOST_PP_ITERATION(), BOOST_RESULT_OF_STATIC_MEMBERS, _)
@ -49,34 +72,18 @@ public:
} // namespace detail
#else // defined(BOOST_HAS_DECLTYPE)
// CWPro8 requires an argument in a function type specialization
#if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3002)) && BOOST_PP_ITERATION() == 0
# define BOOST_RESULT_OF_ARGS void
#else
# define BOOST_RESULT_OF_ARGS BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)
#endif
#else // defined(BOOST_NO_DECLTYPE)
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
template<typename F BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of<F(BOOST_RESULT_OF_ARGS)>
: mpl::if_<
mpl::or_< is_pointer<F>, is_member_function_pointer<F> >
, boost::detail::result_of_impl<
typename remove_cv<F>::type,
typename remove_cv<F>::type(BOOST_RESULT_OF_ARGS),
(boost::detail::has_result_type<F>::value)>
, boost::detail::result_of_impl<
F,
F(BOOST_RESULT_OF_ARGS),
(boost::detail::has_result_type<F>::value)> >::type { };
: tr1_result_of<F(BOOST_RESULT_OF_ARGS)> { };
#endif
#undef BOOST_RESULT_OF_ARGS
#endif // defined(BOOST_NO_DECLTYPE)
#endif // defined(BOOST_HAS_DECLTYPE)
#undef BOOST_RESULT_OF_ARGS
#if BOOST_PP_ITERATION() >= 1
@ -84,14 +91,14 @@ namespace detail {
template<typename R, typename FArgs BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of_impl<R (*)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), FArgs, false>
struct tr1_result_of_impl<R (*)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), FArgs, false>
{
typedef R type;
};
template<typename R, typename FArgs BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of_impl<R (&)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), FArgs, false>
struct tr1_result_of_impl<R (&)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), FArgs, false>
{
typedef R type;
};
@ -99,7 +106,7 @@ struct result_of_impl<R (&)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), FArgs
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
template<typename R, typename FArgs BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of_impl<R (T0::*)
struct tr1_result_of_impl<R (T0::*)
(BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T)),
FArgs, false>
{
@ -108,7 +115,7 @@ struct result_of_impl<R (T0::*)
template<typename R, typename FArgs BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of_impl<R (T0::*)
struct tr1_result_of_impl<R (T0::*)
(BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T))
const,
FArgs, false>
@ -118,7 +125,7 @@ struct result_of_impl<R (T0::*)
template<typename R, typename FArgs BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of_impl<R (T0::*)
struct tr1_result_of_impl<R (T0::*)
(BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T))
volatile,
FArgs, false>
@ -128,7 +135,7 @@ struct result_of_impl<R (T0::*)
template<typename R, typename FArgs BOOST_PP_COMMA_IF(BOOST_PP_ITERATION())
BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of_impl<R (T0::*)
struct tr1_result_of_impl<R (T0::*)
(BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T))
const volatile,
FArgs, false>

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@ -30,14 +30,15 @@
namespace boost {
template<typename F> struct result_of;
template<typename F> struct tr1_result_of; // a TR1-style implementation of result_of
#if !defined(BOOST_NO_SFINAE) && !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
namespace detail {
BOOST_MPL_HAS_XXX_TRAIT_DEF(result_type)
template<typename F, typename FArgs, bool HasResultType> struct result_of_impl;
template<typename F> struct result_of_decltype_impl;
template<typename F, typename FArgs, bool HasResultType> struct tr1_result_of_impl;
template<typename F> struct cpp0x_result_of_impl;
template<typename F>
struct result_of_void_impl
@ -60,10 +61,10 @@ struct result_of_void_impl<R (&)(void)>
// Determine the return type of a function pointer or pointer to member.
template<typename F, typename FArgs>
struct result_of_pointer
: result_of_impl<typename remove_cv<F>::type, FArgs, false> { };
: tr1_result_of_impl<typename remove_cv<F>::type, FArgs, false> { };
template<typename F, typename FArgs>
struct result_of_impl<F, FArgs, true>
struct tr1_result_of_impl<F, FArgs, true>
{
typedef typename F::result_type type;
};
@ -79,7 +80,7 @@ struct result_of_nested_result : F::template result<FArgs>
{};
template<typename F, typename FArgs>
struct result_of_impl<F, FArgs, false>
struct tr1_result_of_impl<F, FArgs, false>
: mpl::if_<is_function_with_no_args<FArgs>,
result_of_void_impl<F>,
result_of_nested_result<F, FArgs> >::type

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@ -9,6 +9,8 @@
// 23 May 2008 (Fixed operator= const issue, added initialized_value) Niels Dekker, Fernando Cacciola
// 21 Ago 2008 (Added swap) Niels Dekker, Fernando Cacciola
// 20 Feb 2009 (Fixed logical const-ness issues) Niels Dekker, Fernando Cacciola
// 03 Apr 2010 (Added initialized<T>, suggested by Jeffrey Hellrung, fixing #3472) Niels Dekker
// 30 May 2010 (Made memset call conditional, fixing #3869) Niels Dekker
//
#ifndef BOOST_UTILITY_VALUE_INIT_21AGO2002_HPP
#define BOOST_UTILITY_VALUE_INIT_21AGO2002_HPP
@ -20,6 +22,7 @@
// contains. More details on these issues are at libs/utility/value_init.htm
#include <boost/aligned_storage.hpp>
#include <boost/config.hpp> // For BOOST_NO_COMPLETE_VALUE_INITIALIZATION.
#include <boost/detail/workaround.hpp>
#include <boost/static_assert.hpp>
#include <boost/type_traits/cv_traits.hpp>
@ -28,10 +31,39 @@
#include <cstring>
#include <new>
#ifdef BOOST_MSVC
#pragma warning(push)
#if _MSC_VER >= 1310
// It is safe to ignore the following warning from MSVC 7.1 or higher:
// "warning C4351: new behavior: elements of array will be default initialized"
#pragma warning(disable: 4351)
// It is safe to ignore the following MSVC warning, which may pop up when T is
// a const type: "warning C4512: assignment operator could not be generated".
#pragma warning(disable: 4512)
#endif
#endif
#ifdef BOOST_NO_COMPLETE_VALUE_INITIALIZATION
// Implementation detail: The macro BOOST_DETAIL_VALUE_INIT_WORKAROUND_SUGGESTED
// suggests that a workaround should be applied, because of compiler issues
// regarding value-initialization.
#define BOOST_DETAIL_VALUE_INIT_WORKAROUND_SUGGESTED
#endif
// Implementation detail: The macro BOOST_DETAIL_VALUE_INIT_WORKAROUND
// switches the value-initialization workaround either on or off.
#ifndef BOOST_DETAIL_VALUE_INIT_WORKAROUND
#ifdef BOOST_DETAIL_VALUE_INIT_WORKAROUND_SUGGESTED
#define BOOST_DETAIL_VALUE_INIT_WORKAROUND 1
#else
#define BOOST_DETAIL_VALUE_INIT_WORKAROUND 0
#endif
#endif
namespace boost {
template<class T>
class value_initialized
class initialized
{
private :
struct wrapper
@ -40,6 +72,18 @@ class value_initialized
typename
#endif
remove_const<T>::type data;
wrapper()
:
data()
{
}
wrapper(T const & arg)
:
data(arg)
{
}
};
mutable
@ -55,30 +99,25 @@ class value_initialized
public :
value_initialized()
initialized()
{
#if BOOST_DETAIL_VALUE_INIT_WORKAROUND
std::memset(&x, 0, sizeof(x));
#ifdef BOOST_MSVC
#pragma warning(push)
#if _MSC_VER >= 1310
// When using MSVC 7.1 or higher, the following placement new expression may trigger warning C4345:
// "behavior change: an object of POD type constructed with an initializer of the form ()
// will be default-initialized". It is safe to ignore this warning when using value_initialized.
#pragma warning(disable: 4345)
#endif
#endif
new (wrapper_address()) wrapper();
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif
}
value_initialized(value_initialized const & arg)
initialized(initialized const & arg)
{
new (wrapper_address()) wrapper( static_cast<wrapper const &>(*(arg.wrapper_address())));
}
value_initialized & operator=(value_initialized const & arg)
explicit initialized(T const & arg)
{
new (wrapper_address()) wrapper(arg);
}
initialized & operator=(initialized const & arg)
{
// Assignment is only allowed when T is non-const.
BOOST_STATIC_ASSERT( ! is_const<T>::value );
@ -86,7 +125,7 @@ class value_initialized
return *this;
}
~value_initialized()
~initialized()
{
wrapper_address()->wrapper::~wrapper();
}
@ -101,17 +140,81 @@ class value_initialized
return wrapper_address()->data;
}
void swap(value_initialized & arg)
void swap(initialized & arg)
{
::boost::swap( this->data(), arg.data() );
}
operator T const &() const { return this->data(); }
operator T const &() const
{
return wrapper_address()->data;
}
operator T&() { return this->data(); }
operator T&()
{
return wrapper_address()->data;
}
} ;
template<class T>
T const& get ( initialized<T> const& x )
{
return x.data() ;
}
template<class T>
T& get ( initialized<T>& x )
{
return x.data() ;
}
template<class T>
void swap ( initialized<T> & lhs, initialized<T> & rhs )
{
lhs.swap(rhs) ;
}
template<class T>
class value_initialized
{
private :
// initialized<T> does value-initialization by default.
initialized<T> m_data;
public :
value_initialized()
:
m_data()
{ }
T const & data() const
{
return m_data.data();
}
T& data()
{
return m_data.data();
}
void swap(value_initialized & arg)
{
m_data.swap(arg.m_data);
}
operator T const &() const
{
return m_data;
}
operator T&()
{
return m_data;
}
} ;
template<class T>
@ -119,6 +222,7 @@ T const& get ( value_initialized<T> const& x )
{
return x.data() ;
}
template<class T>
T& get ( value_initialized<T>& x )
{
@ -138,7 +242,7 @@ class initialized_value_t
template <class T> operator T() const
{
return get( value_initialized<T>() );
return initialized<T>().data();
}
};
@ -147,5 +251,8 @@ initialized_value_t const initialized_value = {} ;
} // namespace boost
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif
#endif

116
initialized_test.cpp Normal file
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@ -0,0 +1,116 @@
// Copyright 2010, Niels Dekker.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// Test program for boost::initialized<T>.
//
// 2 May 2010 (Created) Niels Dekker
#include <boost/utility/value_init.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <string>
namespace
{
// Typical use case for boost::initialized<T>: A generic class that
// holds a value of type T, which must be initialized by either
// value-initialization or direct-initialization.
template <class T> class key_value_pair
{
std::string m_key;
boost::initialized<T> m_value;
public:
// Value-initializes the object held by m_value.
key_value_pair() { }
// Value-initializes the object held by m_value.
explicit key_value_pair(const std::string& key)
:
m_key(key)
{
}
// Direct-initializes the object held by m_value.
key_value_pair(const std::string& key, const T& value)
:
m_key(key), m_value(value)
{
}
const T& get_value() const
{
return m_value;
}
};
// Tells whether the argument is value-initialized.
bool is_value_initialized(const int& arg)
{
return arg == 0;
}
// Tells whether the argument is value-initialized.
bool is_value_initialized(const std::string& arg)
{
return arg.empty();
}
struct foo
{
int data;
};
bool operator==(const foo& lhs, const foo& rhs)
{
return lhs.data == rhs.data;
}
// Tells whether the argument is value-initialized.
bool is_value_initialized(const foo& arg)
{
return arg.data == 0;
}
template <class T>
void test_key_value_pair(const T& magic_value)
{
// The value component of a default key_value_pair must be value-initialized.
key_value_pair<T> default_key_value_pair;
BOOST_TEST( is_value_initialized(default_key_value_pair.get_value() ) );
// The value component of a key_value_pair that only has its key explicitly specified
// must also be value-initialized.
BOOST_TEST( is_value_initialized(key_value_pair<T>("key").get_value()) );
// However, the value component of the following key_value_pair must be
// "magic_value", as it must be direct-initialized.
BOOST_TEST( key_value_pair<T>("key", magic_value).get_value() == magic_value );
}
}
// Tests boost::initialize for a fundamental type, a type with a
// user-defined constructor, and a user-defined type without
// a user-defined constructor.
int main()
{
const int magic_number = 42;
test_key_value_pair(magic_number);
const std::string magic_string = "magic value";
test_key_value_pair(magic_string);
const foo magic_foo = { 42 };
test_key_value_pair(magic_foo);
return boost::report_errors();
}

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@ -0,0 +1,33 @@
// Copyright 2010, Niels Dekker.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// Test program for boost::initialized<T>. Must fail to compile.
//
// Initial: 2 May 2010
#include <boost/utility/value_init.hpp>
namespace
{
void direct_initialize_from_int()
{
// Okay: initialized<T> supports direct-initialization from T.
boost::initialized<int> direct_initialized_int(1);
}
void copy_initialize_from_int()
{
// The following line should not compile, because initialized<T>
// was not intended to supports copy-initialization from T.
boost::initialized<int> copy_initialized_int = 1;
}
}
int main()
{
// This should fail to compile, so there is no need to call any function.
return 0;
}

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@ -0,0 +1,37 @@
// Copyright 2010, Niels Dekker.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// Test program for boost::initialized<T>. Must fail to compile.
//
// Initial: 2 May 2010
#include <boost/utility/value_init.hpp>
namespace
{
void from_value_initialized_to_initialized()
{
boost::value_initialized<int> value_initialized_int;
// Okay: initialized<T> can be initialized by value_initialized<T>.
boost::initialized<int> initialized_int(value_initialized_int);
}
void from_initialized_to_value_initialized()
{
boost::initialized<int> initialized_int(13);
// The following line should not compile, because initialized<T>
// should not be convertible to value_initialized<T>.
boost::value_initialized<int> value_initialized_int(initialized_int);
}
}
int main()
{
// This should fail to compile, so there is no need to call any function.
return 0;
}

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@ -1,4 +1,4 @@
// Copyright (c) 2008 Joseph Gauterin, Niels Dekker
// Copyright (c) 2008 - 2010 Joseph Gauterin, Niels Dekker
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
@ -17,8 +17,8 @@
int test_main(int, char*[])
{
typedef std::bitset<8> bitset_type;
const bitset_type initial_value1 = 1ul;
const bitset_type initial_value2 = 2ul;
const bitset_type initial_value1 = 1;
const bitset_type initial_value2 = 2;
bitset_type object1 = initial_value1;
bitset_type object2 = initial_value2;

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@ -32,9 +32,12 @@ test-suite utility
[ compile result_of_test.cpp ]
[ run ../shared_iterator_test.cpp ]
[ run ../value_init_test.cpp ]
[ run ../initialized_test.cpp ]
[ compile-fail ../value_init_test_fail1.cpp ]
[ compile-fail ../value_init_test_fail2.cpp ]
[ compile-fail ../value_init_test_fail3.cpp ]
[ compile-fail ../initialized_test_fail1.cpp ]
[ compile-fail ../initialized_test_fail2.cpp ]
[ run ../verify_test.cpp ]
;

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@ -5,6 +5,8 @@
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#define BOOST_RESULT_OF_USE_DECLTYPE
// For more information, see http://www.boost.org/libs/utility
#include <boost/utility/result_of.hpp>
#include <utility>
@ -131,9 +133,21 @@ int main()
BOOST_STATIC_ASSERT((is_same<result_of<int_result_of_template<void>(double)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<result_of<const int_result_of_template<void>(double)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<int_result_type(float)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<int_result_of(double)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<const int_result_of(double)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<int_result_type_template<void>(float)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<int_result_of_template<void>(double)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<const int_result_of_template<void>(double)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<int_result_of(void)>::type, void>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<volatile int_result_of(void)>::type, void>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<int_result_of_template<void>(void)>::type, void>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<volatile int_result_of_template<void>(void)>::type, void>::value));
// Prior to decltype, result_of could not deduce the return type
// nullary function objects unless they exposed a result_type.
#if defined(BOOST_HAS_DECLTYPE)
#if !defined(BOOST_NO_DECLTYPE)
BOOST_STATIC_ASSERT((is_same<result_of<int_result_of(void)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<result_of<volatile int_result_of(void)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<result_of<int_result_of_template<void>(void)>::type, int>::value));
@ -145,11 +159,14 @@ int main()
BOOST_STATIC_ASSERT((is_same<result_of<volatile int_result_of_template<void>(void)>::type, void>::value));
#endif
BOOST_STATIC_ASSERT((is_same<tr1_result_of<int_result_type_and_float_result_of_and_char_return(char)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<int_result_type_and_float_result_of_and_char_return_template<void>(char)>::type, int>::value));
// Prior to decltype, result_of ignored a nested result<> if
// result_type was defined. After decltype, result_of deduces the
// actual return type of the function object, ignoring both
// result<> and result_type.
#if defined(BOOST_HAS_DECLTYPE)
#if !defined(BOOST_NO_DECLTYPE)
BOOST_STATIC_ASSERT((is_same<result_of<int_result_type_and_float_result_of_and_char_return(char)>::type, char>::value));
BOOST_STATIC_ASSERT((is_same<result_of<int_result_type_and_float_result_of_and_char_return_template<void>(char)>::type, char>::value));
#else
@ -168,6 +185,17 @@ int main()
BOOST_STATIC_ASSERT((is_same<result_of<mem_func_ptr_0(X)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<result_of<func_ptr(void)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<func_ptr(char, float)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<func_ref(char, float)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<func_ptr_0()>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<func_ref_0()>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<mem_func_ptr(X,char)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<mem_func_ptr_c(X,char)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<mem_func_ptr_v(X,char)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<mem_func_ptr_cv(X,char)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<mem_func_ptr_0(X)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<func_ptr(void)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<result_of<result_of_member_function_template(double)>::type, double>::value));
BOOST_STATIC_ASSERT((is_same<result_of<const result_of_member_function_template(double)>::type, const double>::value));
BOOST_STATIC_ASSERT((is_same<result_of<volatile result_of_member_function_template(double)>::type, volatile double>::value));
@ -177,11 +205,23 @@ int main()
BOOST_STATIC_ASSERT((is_same<result_of<result_of_member_function_template(int volatile &, int)>::type, int volatile &>::value));
BOOST_STATIC_ASSERT((is_same<result_of<result_of_member_function_template(int const volatile &, int)>::type, int const volatile &>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<result_of_member_function_template(double)>::type, double>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<const result_of_member_function_template(double)>::type, const double>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<volatile result_of_member_function_template(double)>::type, volatile double>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<const volatile result_of_member_function_template(double)>::type, const volatile double>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<result_of_member_function_template(int &, int)>::type, int &>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<result_of_member_function_template(int const &, int)>::type, int const &>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<result_of_member_function_template(int volatile &, int)>::type, int volatile &>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<result_of_member_function_template(int const volatile &, int)>::type, int const volatile &>::value));
typedef int (*pf_t)(int);
BOOST_STATIC_ASSERT((is_same<result_of<pf_t(int)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<result_of<pf_t const(int)>::type,int>::value));
#if defined(BOOST_HAS_DECLTYPE)
BOOST_STATIC_ASSERT((is_same<tr1_result_of<pf_t(int)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<tr1_result_of<pf_t const(int)>::type,int>::value));
#if !defined(BOOST_NO_DECLTYPE)
BOOST_STATIC_ASSERT((is_same<result_of<no_result_type_or_result_of(double)>::type, int>::value));
BOOST_STATIC_ASSERT((is_same<result_of<no_result_type_or_result_of(void)>::type, unsigned int>::value));
BOOST_STATIC_ASSERT((is_same<result_of<const no_result_type_or_result_of(double)>::type, short>::value));

View File

@ -33,6 +33,7 @@
<ul>
<li><a href="#val_init"><code>template class value_initialized&lt;T&gt;</code></a></li>
<li><a href="#initialized"><code>template class initialized&lt;T&gt;</code></a></li>
<li><a href="#initialized_value"><code>initialized_value</code></a></li>
</ul>
@ -123,6 +124,12 @@ constructed by the following declaration:
</pre>
</p>
<p>
The template <a href="#initialized"><code>initialized</code></a>
offers both value-initialization and direct-initialization.
It is especially useful as a data member type, allowing the very same object
to be either direct-initialized or value-initialized.
</p>
<p>
The <code>const</code> object <a href="#initialized_value"><code>initialized_value</code></a>
allows value-initializing a variable as follows:
<pre>
@ -216,37 +223,65 @@ it <em>may</em> in practice still be left uninitialized, because of those
compiler issues! It's hard to make a general statement on what those issues
are like, because they depend on the compiler you are using, its version number,
and the type of object you would like to have value-initialized.
Compilers usually support value-initialization for built-in types properly.
But objects of user-defined types that involve <em>aggregates</em> may <em>in some cases</em>
be partially, or even entirely left uninitialized, when they should be value-initialized.
All compilers we have tested so far support value-initialization for arithmetic types properly.
However, various compilers may leave some types of <em>aggregates</em> uninitialized, when they
should be value-initialized. Value-initialization of objects of a pointer-to-member type may also
go wrong on various compilers.
</p>
<p>
We have encountered issues regarding value-initialization on compilers by
Microsoft, Sun, Borland, and GNU. Here is a list of bug reports on those issues:
<table summary="Compiler bug reports regarding value-initialization" border="0" cellpadding="7" cellspacing="1" >
<tr><td>
<a href="https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=100744">
Microsoft Feedback ID 100744 - Value-initialization in new-expression</a>
<br>Reported by Pavel Kuznetsov (MetaCommunications Engineering), 2005-07-28
<br>
<a href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30111">
GCC Bug 30111 - Value-initialization of POD base class doesn't initialize members</a>
<br>Reported by Jonathan Wakely, 2006-12-07
<br>
<a href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33916">
GCC Bug 33916 - Default constructor fails to initialize array members</a>
<br>Reported by Michael Elizabeth Chastain, 2007-10-26
<br>
<a href="http://qc.codegear.com/wc/qcmain.aspx?d=51854">
Borland Report 51854 - Value-initialization: POD struct should be zero-initialized</a>
<br>Reported by Niels Dekker (LKEB, Leiden University Medical Center), 2007-09-11
<br>
</td></tr></table>
At the moment of writing, May 2010, the following reported issues regarding
value-initialization are still there in current compiler releases:
<ul>
<li>
<a href="https://connect.microsoft.com/VisualStudio/feedback/details/100744">
Microsoft Visual Studio Feedback ID 100744, Value-initialization in new-expression</a>
<br>Reported by Pavel Kuznetsov (MetaCommunications Engineering), 2005
</li><li>
<a href="http://connect.microsoft.com/VisualStudio/feedback/details/484295">
Microsoft Visual Studio Feedback ID 484295, VC++ does not value-initialize members of derived classes without user-declared constructor</a>
<br>Reported by Sylvester Hesp, 2009
</li><li>
<a href="https://connect.microsoft.com/VisualStudio/feedback/details/499606">
Microsoft Visual Studio Feedback ID 499606, Presence of copy constructor breaks member class initialization</a>
<br>Reported by Alex Vakulenko, 2009
</li><li>
<a href="http://qc.embarcadero.com/wc/qcmain.aspx?d=83751">
Embarcadero/C++Builder Report 83751, Value-initialization: arrays should have each element value-initialized</a>
<br>Reported by Niels Dekker (LKEB), 2010
</li><li>
<a href="http://qc.embarcadero.com/wc/qcmain.aspx?d=83851">
Embarcadero/C++Builder Report 83851, Value-initialized temporary triggers internal backend error C1798</a>
<br>Reported by Niels Dekker, 2010
</li><li>
<a href="http://qc.embarcadero.com/wc/qcmain.aspx?d=84279">
Embarcadero/C++Builder Report 84279, Internal compiler error (F1004), value-initializing member function pointer by "new T()"</a>
<br>Reported by Niels Dekker, 2010
</li><li>
Sun CR 6947016, Sun 5.10 may fail to value-initialize an object of a non-POD aggregate.
<br>Reported to Steve Clamage by Niels Dekker, 2010
</li><li>
IBM's XL V10.1 and V11.1 may fail to value-initialize a temporary of a non-POD aggregate.
<br>Reported to Michael Wong by Niels Dekker, 2010
</li><li>
Intel support issue 589832, Attempt to value-initialize pointer-to-member triggers internal error
on Intel 11.1.
<br>Reported by John Maddock, 2010
</li>
</ul>
Note that all known GCC issues regarding value-initialization are
fixed with GCC version 4.4, including
<a href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30111">GCC Bug 30111</a>.
Clang also has completely implemented value-initialization, as far as we know,
now that <a href="http://llvm.org/bugs/show_bug.cgi?id=7139">Clang Bug 7139</a> is fixed.
</p><p>
New versions of <code>value_initialized</code>
(Boost release version 1.35 or higher)
offer a workaround to these issues: <code>value_initialized</code> will now clear
its internal data, prior to constructing the object that it contains.
offer a workaround to these issues: <code>value_initialized</code> may now clear
its internal data, prior to constructing the object that it contains. It will do
so for those compilers that need to have such a workaround, based on the
<a href="../config/doc/html/boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_defects"
>compiler defect macro</a> BOOST_NO_COMPLETE_VALUE_INITIALIZATION.
</p>
<h2><a name="types"></a>Types and objects</h2>
@ -340,6 +375,52 @@ the wrapped object is always performed with the <code>get()</code> idiom:</p>
<pre>value_initialized&lt;int&gt; x ;<br>get(x) = 1 ; // OK<br><br>value_initialized&lt;int const&gt; cx ;<br>get(x) = 1 ; // ERROR: Cannot modify a const object<br><br>value_initialized&lt;int&gt; const x_c ;<br>get(x_c) = 1 ; // ERROR: Cannot modify a const object<br><br>value_initialized&lt;int const&gt; const cx_c ;<br>get(cx_c) = 1 ; // ERROR: Cannot modify a const object<br></pre>
<h2><a name="initialized"><code>template class initialized&lt;T&gt;</code></a></h2>
<pre>namespace boost {<br><br>template&lt;class T&gt;<br>class initialized<br>{
<br> public :
<br> initialized() : x() {}
<br> explicit initialized(T const &amp; arg) : x(arg) {}
<br> operator T const &amp;() const;
<br> operator T&amp;();
<br> T const &amp;data() const;
<br> T&amp; data();
<br> void swap( value_initialized&lt;T&gt;&amp; );
<br>
<br> private :
<br> <i>unspecified</i> x ;
<br>} ;
<br>
<br>template&lt;class T&gt;
<br>T const&amp; get ( initialized&lt;T&gt; const&amp; x );
<br>
<br>template&lt;class T&gt;
<br>T&amp; get ( initialized&lt;T&gt;&amp; x );
<br>
<br>} // namespace boost
<br></pre>
The template class <code>boost::initialized&lt;T&gt;</code> supports both value-initialization
and direct-initialization, so its interface is a superset of the interface
of <code>value_initialized&lt;T&gt;</code>: Its default-constructor
value-initializes the wrapped object just like the default-constructor of
<code>value_initialized&lt;T&gt;</code>, but <code>boost::initialized&lt;T&gt;</code>
also offers an extra <code>explicit</code>
constructor, which direct-initializes the wrapped object by the specified value.
<p>
<code>initialized&lt;T&gt;</code> is especially useful when the wrapped
object must be either value-initialized or direct-initialized, depending on
runtime conditions. For example, <code>initialized&lt;T&gt;</code> could
hold the value of a data member that may be value-initialized by some
constructors, and direct-initialized by others.
On the other hand, if it is known beforehand that the
object must <i>always</i> be value-initialized, <code>value_initialized&lt;T&gt;</code>
may be preferable. And if the object must always be
direct-initialized, none of the two wrappers really needs to be used.
</p>
<h2><a name="initialized_value"><code>initialized_value</code></a></h2>
<pre>
@ -399,6 +480,9 @@ Special thanks to Bj&ouml;rn Karlsson who carefully edited and completed this do
<p>value_initialized was reimplemented by Fernando Cacciola and Niels Dekker
for Boost release version 1.35 (2008), offering a workaround to various compiler issues.
</p>
<p><code>boost::initialized</code> was very much inspired by feedback from Edward Diener and
Jeffrey Hellrung.
</p>
<p>initialized_value was written by Niels Dekker, and added to Boost release version 1.36 (2008).
</p>
<p>Developed by <a href="mailto:fernando_cacciola@hotmail.com">Fernando Cacciola</a>,
@ -407,9 +491,9 @@ for Boost release version 1.35 (2008), offering a workaround to various compiler
</p>
<hr>
<p>Revised 03 October 2009</p>
<p>Revised 30 May 2010</p>
<p>&copy; Copyright Fernando Cacciola, 2002, 2009.</p>
<p>&copy; Copyright Fernando Cacciola, 2002 - 2010.</p>
<p>Distributed under the Boost Software License, Version 1.0. See
<a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a></p>

View File

@ -22,7 +22,7 @@
#pragma hdrstop
#endif
#include "boost/test/minimal.hpp"
#include <boost/detail/lightweight_test.hpp>
//
// Sample POD type
@ -215,7 +215,7 @@ template<class T>
void check_initialized_value ( T const& y )
{
T initializedValue = boost::initialized_value ;
BOOST_CHECK ( y == initializedValue ) ;
BOOST_TEST ( y == initializedValue ) ;
}
#ifdef __BORLANDC__
@ -245,128 +245,125 @@ void check_initialized_value( NonPOD const& )
template<class T>
bool test ( T const& y, T const& z )
{
const boost::unit_test::counter_t counter_before_test = boost::minimal_test::errors_counter();
const int errors_before_test = boost::detail::test_errors();
check_initialized_value(y);
boost::value_initialized<T> x ;
BOOST_CHECK ( y == x ) ;
BOOST_CHECK ( y == boost::get(x) ) ;
BOOST_TEST ( y == x ) ;
BOOST_TEST ( y == boost::get(x) ) ;
static_cast<T&>(x) = z ;
boost::get(x) = z ;
BOOST_CHECK ( x == z ) ;
BOOST_TEST ( x == z ) ;
boost::value_initialized<T> const x_c ;
BOOST_CHECK ( y == x_c ) ;
BOOST_CHECK ( y == boost::get(x_c) ) ;
BOOST_TEST ( y == x_c ) ;
BOOST_TEST ( y == boost::get(x_c) ) ;
T& x_c_ref = const_cast<T&>( boost::get(x_c) ) ;
x_c_ref = z ;
BOOST_CHECK ( x_c == z ) ;
BOOST_TEST ( x_c == z ) ;
boost::value_initialized<T> const copy1 = x;
BOOST_CHECK ( boost::get(copy1) == boost::get(x) ) ;
BOOST_TEST ( boost::get(copy1) == boost::get(x) ) ;
boost::value_initialized<T> copy2;
copy2 = x;
BOOST_CHECK ( boost::get(copy2) == boost::get(x) ) ;
BOOST_TEST ( boost::get(copy2) == boost::get(x) ) ;
boost::shared_ptr<boost::value_initialized<T> > ptr( new boost::value_initialized<T> );
BOOST_CHECK ( y == *ptr ) ;
BOOST_TEST ( y == *ptr ) ;
#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
boost::value_initialized<T const> cx ;
BOOST_CHECK ( y == cx ) ;
BOOST_CHECK ( y == boost::get(cx) ) ;
BOOST_TEST ( y == cx ) ;
BOOST_TEST ( y == boost::get(cx) ) ;
boost::value_initialized<T const> const cx_c ;
BOOST_CHECK ( y == cx_c ) ;
BOOST_CHECK ( y == boost::get(cx_c) ) ;
BOOST_TEST ( y == cx_c ) ;
BOOST_TEST ( y == boost::get(cx_c) ) ;
#endif
return boost::minimal_test::errors_counter() == counter_before_test ;
return boost::detail::test_errors() == errors_before_test ;
}
int test_main(int, char **)
int main(int, char **)
{
BOOST_CHECK ( test( 0,1234 ) ) ;
BOOST_CHECK ( test( 0.0,12.34 ) ) ;
BOOST_CHECK ( test( POD(0,0,0.0), POD('a',1234,56.78f) ) ) ;
BOOST_CHECK ( test( NonPOD( std::string() ), NonPOD( std::string("something") ) ) ) ;
BOOST_TEST ( test( 0,1234 ) ) ;
BOOST_TEST ( test( 0.0,12.34 ) ) ;
BOOST_TEST ( test( POD(0,0,0.0), POD('a',1234,56.78f) ) ) ;
BOOST_TEST ( test( NonPOD( std::string() ), NonPOD( std::string("something") ) ) ) ;
NonPOD NonPOD_object( std::string("NonPOD_object") );
BOOST_CHECK ( test<NonPOD *>( 0, &NonPOD_object ) ) ;
BOOST_TEST ( test<NonPOD *>( 0, &NonPOD_object ) ) ;
AggregatePODStruct zeroInitializedAggregatePODStruct = { 0.0f, '\0', 0 };
AggregatePODStruct nonZeroInitializedAggregatePODStruct = { 1.25f, 'a', -1 };
BOOST_CHECK ( test(zeroInitializedAggregatePODStruct, nonZeroInitializedAggregatePODStruct) );
BOOST_TEST ( test(zeroInitializedAggregatePODStruct, nonZeroInitializedAggregatePODStruct) );
StringAndInt stringAndInt0;
StringAndInt stringAndInt1;
stringAndInt0.i = 0;
stringAndInt1.i = 1;
stringAndInt1.s = std::string("1");
BOOST_CHECK ( test(stringAndInt0, stringAndInt1) );
BOOST_TEST ( test(stringAndInt0, stringAndInt1) );
StructWithDestructor structWithDestructor0;
StructWithDestructor structWithDestructor1;
structWithDestructor0.i = 0;
structWithDestructor1.i = 1;
BOOST_CHECK ( test(structWithDestructor0, structWithDestructor1) );
BOOST_TEST ( test(structWithDestructor0, structWithDestructor1) );
StructWithVirtualFunction structWithVirtualFunction0;
StructWithVirtualFunction structWithVirtualFunction1;
structWithVirtualFunction0.i = 0;
structWithVirtualFunction1.i = 1;
BOOST_CHECK ( test(structWithVirtualFunction0, structWithVirtualFunction1) );
BOOST_TEST ( test(structWithVirtualFunction0, structWithVirtualFunction1) );
DerivedFromAggregatePODStruct derivedFromAggregatePODStruct0;
DerivedFromAggregatePODStruct derivedFromAggregatePODStruct1;
static_cast<AggregatePODStruct &>(derivedFromAggregatePODStruct0) = zeroInitializedAggregatePODStruct;
static_cast<AggregatePODStruct &>(derivedFromAggregatePODStruct1) = nonZeroInitializedAggregatePODStruct;
BOOST_CHECK ( test(derivedFromAggregatePODStruct0, derivedFromAggregatePODStruct1) );
BOOST_TEST ( test(derivedFromAggregatePODStruct0, derivedFromAggregatePODStruct1) );
AggregatePODStructWrapper aggregatePODStructWrapper0;
AggregatePODStructWrapper aggregatePODStructWrapper1;
aggregatePODStructWrapper0.dataMember = zeroInitializedAggregatePODStruct;
aggregatePODStructWrapper1.dataMember = nonZeroInitializedAggregatePODStruct;
BOOST_CHECK ( test(aggregatePODStructWrapper0, aggregatePODStructWrapper1) );
BOOST_TEST ( test(aggregatePODStructWrapper0, aggregatePODStructWrapper1) );
ArrayOfBytes zeroInitializedArrayOfBytes = { 0 };
boost::value_initialized<ArrayOfBytes> valueInitializedArrayOfBytes;
BOOST_CHECK (std::memcmp(get(valueInitializedArrayOfBytes), zeroInitializedArrayOfBytes, sizeof(ArrayOfBytes)) == 0);
BOOST_TEST (std::memcmp(get(valueInitializedArrayOfBytes), zeroInitializedArrayOfBytes, sizeof(ArrayOfBytes)) == 0);
boost::value_initialized<ArrayOfBytes> valueInitializedArrayOfBytes2;
valueInitializedArrayOfBytes2 = valueInitializedArrayOfBytes;
BOOST_CHECK (std::memcmp(get(valueInitializedArrayOfBytes), get(valueInitializedArrayOfBytes2), sizeof(ArrayOfBytes)) == 0);
BOOST_TEST (std::memcmp(get(valueInitializedArrayOfBytes), get(valueInitializedArrayOfBytes2), sizeof(ArrayOfBytes)) == 0);
boost::value_initialized<CopyFunctionCallTester> copyFunctionCallTester1;
BOOST_CHECK ( ! get(copyFunctionCallTester1).is_copy_constructed);
BOOST_CHECK ( ! get(copyFunctionCallTester1).is_assignment_called);
BOOST_TEST ( ! get(copyFunctionCallTester1).is_copy_constructed);
BOOST_TEST ( ! get(copyFunctionCallTester1).is_assignment_called);
boost::value_initialized<CopyFunctionCallTester> copyFunctionCallTester2 = boost::value_initialized<CopyFunctionCallTester>(copyFunctionCallTester1);
BOOST_CHECK ( get(copyFunctionCallTester2).is_copy_constructed);
BOOST_CHECK ( ! get(copyFunctionCallTester2).is_assignment_called);
BOOST_TEST ( get(copyFunctionCallTester2).is_copy_constructed);
BOOST_TEST ( ! get(copyFunctionCallTester2).is_assignment_called);
boost::value_initialized<CopyFunctionCallTester> copyFunctionCallTester3;
copyFunctionCallTester3 = boost::value_initialized<CopyFunctionCallTester>(copyFunctionCallTester1);
BOOST_CHECK ( ! get(copyFunctionCallTester3).is_copy_constructed);
BOOST_CHECK ( get(copyFunctionCallTester3).is_assignment_called);
BOOST_TEST ( ! get(copyFunctionCallTester3).is_copy_constructed);
BOOST_TEST ( get(copyFunctionCallTester3).is_assignment_called);
boost::value_initialized<SwapFunctionCallTester> swapFunctionCallTester1;
boost::value_initialized<SwapFunctionCallTester> swapFunctionCallTester2;
get(swapFunctionCallTester1).data = 1;
get(swapFunctionCallTester2).data = 2;
boost::swap(swapFunctionCallTester1, swapFunctionCallTester2);
BOOST_CHECK( get(swapFunctionCallTester1).data == 2 );
BOOST_CHECK( get(swapFunctionCallTester2).data == 1 );
BOOST_CHECK( get(swapFunctionCallTester1).is_custom_swap_called );
BOOST_CHECK( get(swapFunctionCallTester2).is_custom_swap_called );
BOOST_TEST( get(swapFunctionCallTester1).data == 2 );
BOOST_TEST( get(swapFunctionCallTester2).data == 1 );
BOOST_TEST( get(swapFunctionCallTester1).is_custom_swap_called );
BOOST_TEST( get(swapFunctionCallTester2).is_custom_swap_called );
return 0;
return boost::report_errors();
}
unsigned int expected_failures = 0;