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fix Boost.Python ICEs

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[SVN r25174]
This commit is contained in:
Aleksey Gurtovoy
2004-09-17 13:58:19 +00:00
parent 529cdbb02a
commit b11a4e267e
1 changed files with 17 additions and 1 deletions
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18
include/boost/mpl/aux_/msvc_is_class.hpp
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@@ -14,11 +14,15 @@
// $Date$ // $Date$
// $Revision$ // $Revision$
#include <boost/mpl/if.hpp>
#include <boost/mpl/bool.hpp> #include <boost/mpl/bool.hpp>
#include <boost/mpl/aux_/type_wrapper.hpp> #include <boost/mpl/aux_/type_wrapper.hpp>
#include <boost/mpl/aux_/yes_no.hpp> #include <boost/mpl/aux_/yes_no.hpp>
#include <boost/mpl/aux_/adl_barrier.hpp> #include <boost/mpl/aux_/adl_barrier.hpp>
#include <boost/type_traits/is_reference.hpp>
BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
namespace aux { namespace aux {
@@ -31,7 +35,7 @@ template< typename T > struct is_class_helper
// MSVC 6.x-specific lightweight 'is_class' implementation; // MSVC 6.x-specific lightweight 'is_class' implementation;
// Distinguishing feature: does not instantiate the type being tested. // Distinguishing feature: does not instantiate the type being tested.
template< typename T > template< typename T >
struct msvc_is_class struct msvc_is_class_impl
{ {
template< typename U> template< typename U>
static yes_tag test(type_wrapper<U>*, /*typename*/ is_class_helper<U>::type = 0); static yes_tag test(type_wrapper<U>*, /*typename*/ is_class_helper<U>::type = 0);
@@ -41,6 +45,18 @@ struct msvc_is_class
typedef bool_<value> type; typedef bool_<value> type;
}; };
// agurt, 17/sep/04: have to check for 'is_reference' upfront to avoid ICEs in
// complex metaprograms
template< typename T >
struct msvc_is_class
: if_<
is_reference<T>
, false_
, msvc_is_class_impl<T>
>::type
{
};
} // namespace aux } // namespace aux
BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE