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MPL: Limit a GCC workaround to a version tested to not need it.

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[SVN r86261]
This commit is contained in:
Stephen Kelly
2013-10-12 10:32:40 +00:00
parent eccea8a324
commit c77da6a6da
1 changed files with 10 additions and 7 deletions
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17
include/boost/mpl/quote.hpp
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@@ -61,19 +61,22 @@ namespace boost { namespace mpl {
template< typename T, bool has_type_ >
struct quote_impl
// GCC has a problem with metafunction forwarding when T is a
// specialization of a template called 'type'.
# if BOOST_WORKAROUND(__GNUC__, BOOST_TESTED_AT(4)) \
&& BOOST_WORKAROUND(__GNUC_MINOR__, BOOST_TESTED_AT(0)) \
&& BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, BOOST_TESTED_AT(2))
// GCC had a problem with metafunction forwarding when T is a
// specialization of a template called 'type'. It is unknown which release
// fixed this, but it was previously tested to be broken with GCC 4.0.2.
// It certainly works with 4.6.4 and has not been tested with intermediate
// versions.
# if BOOST_WORKAROUND(__GNUC__, <= 4) \
&& BOOST_WORKAROUND(__GNUC_MINOR__, <= 6) \
&& BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, <= 4)
{
typedef typename T::type type;
};
# else
# else
: T
{
};
# endif
# endif
template< typename T >
struct quote_impl<T,false>