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Attempted fix for IBM C++ 6.0, better heuristic

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[SVN r31579]
This commit is contained in:
Peter Dimov
2005-11-06 16:02:50 +00:00
parent d90c96a7e4
commit 42efa96a2f
1 changed files with 21 additions and 6 deletions
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27
include/boost/bind.hpp
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@@ -1581,11 +1581,30 @@ template< class R, class T > struct add_cref< R (T::*) (), 1 >
typedef void type;
};
#if !( defined(__IBMCPP__) && BOOST_WORKAROUND( __IBMCPP__, BOOST_TESTED_AT(600) ) )
template< class R, class T > struct add_cref< R (T::*) () const, 1 >
{
typedef void type;
};
#endif
template<class R> struct isref
{
enum value_type { value = 0 };
};
template<class R> struct isref< R& >
{
enum value_type { value = 1 };
};
template<class R> struct isref< R* >
{
enum value_type { value = 1 };
};
template<class Pm, class A1> struct dm_result
{
typedef typename add_cref< Pm, 1 >::type type;
@@ -1593,12 +1612,8 @@ template<class Pm, class A1> struct dm_result
template<class Pm, class R, class F, class L> struct dm_result< Pm, bind_t<R, F, L> >
{
typedef typename add_cref< Pm, 0 >::type type;
};
template<class Pm, class R, class F, class L> struct dm_result< Pm, bind_t<R&, F, L> >
{
typedef typename add_cref< Pm, 1 >::type type;
typedef typename bind_t<R, F, L>::result_type result_type;
typedef typename add_cref< Pm, isref< result_type >::value >::type type;
};
} // namespace _bi