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Fixed type deduction on old compilers

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This commit is contained in:
Antony Polukhin
2015-02-03 13:00:37 +03:00
parent 84ab59227d
commit dc25edb4dd
1 changed files with 6 additions and 6 deletions
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12
include/boost/polymorphic_pointer_cast.hpp
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@@ -42,19 +42,19 @@ namespace boost
namespace detail
{
template <typename Target, typename Source>
struct static_pointer_cast_result
struct dynamic_pointer_cast_result
{
#ifdef BOOST_NO_CXX11_DECLTYPE
BOOST_TYPEOF_NESTED_TYPEDEF_TPL(nested, static_pointer_cast<Target>(boost::declval<Source>()))
BOOST_TYPEOF_NESTED_TYPEDEF_TPL(nested, dynamic_pointer_cast<Target>(boost::declval<Source>()))
typedef typename nested::type type;
#else
typedef decltype(static_pointer_cast<Target>(boost::declval<Source>())) type;
typedef decltype(dynamic_pointer_cast<Target>(boost::declval<Source>())) type;
#endif
};
}
template <typename Target, typename Source>
inline typename detail::static_pointer_cast_result<Target, Source>::type
inline typename detail::dynamic_pointer_cast_result<Target, Source>::type
polymorphic_pointer_downcast (const Source& x)
{
BOOST_ASSERT(dynamic_pointer_cast<Target> (x) == x);
@@ -62,10 +62,10 @@ namespace boost
}
template <typename Target, typename Source>
inline typename detail::static_pointer_cast_result<Target, Source>::type
inline typename detail::dynamic_pointer_cast_result<Target, Source>::type
polymorphic_pointer_cast (const Source& x)
{
typename detail::static_pointer_cast_result<Target, Source>::type tmp
typename detail::dynamic_pointer_cast_result<Target, Source>::type tmp
= dynamic_pointer_cast<Target> (x);
if ( !tmp ) boost::throw_exception( std::bad_cast() );