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Workarounds for gcc-3.2

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[SVN r21499]
This commit is contained in:
Dave Abrahams
2004-01-05 14:36:18 +00:00
parent 7fa0daffb1
commit dc50912e64
1 changed files with 24 additions and 21 deletions
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9
include/boost/mpl/aux_/has_xxx.hpp
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@@ -35,21 +35,24 @@
template< typename T > \ template< typename T > \
struct trait \ struct trait \
{ \ { \
struct helpers \
{ \
template< typename U > \ template< typename U > \
static boost::mpl::aux::yes_tag \ static boost::mpl::aux::yes_tag \
helper( \ test( \
boost::mpl::aux::type_wrapper<U> const volatile* \ boost::mpl::aux::type_wrapper<U> const volatile* \
, boost::mpl::aux::type_wrapper<BOOST_MSVC_TYPENAME U::name>* = 0 \ , boost::mpl::aux::type_wrapper<BOOST_MSVC_TYPENAME U::name>* = 0 \
); \ ); \
\ \
static boost::mpl::aux::no_tag \ static boost::mpl::aux::no_tag \
helper(...); \ test(...); \
}; \
\ \
typedef boost::mpl::aux::type_wrapper<T> t_; \ typedef boost::mpl::aux::type_wrapper<T> t_; \
\ \
BOOST_STATIC_CONSTANT( \ BOOST_STATIC_CONSTANT( \
bool, value = \ bool, value = \
sizeof(trait<T>::helper(static_cast<t_*>(0))) \ sizeof(helpers::test(static_cast<t_*>(0))) \
== sizeof(boost::mpl::aux::yes_tag) \ == sizeof(boost::mpl::aux::yes_tag) \
); \ ); \
}; \ }; \