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Workaround GCC2 eager instantiation bug.

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[SVN r21847]
This commit is contained in:
Dave Abrahams
2004-01-20 19:40:50 +00:00
parent cfe17e7fe5
commit a456f8d969
1 changed files with 13 additions and 3 deletions
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16
include/boost/iterator/iterator_facade.hpp
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@ -228,7 +228,9 @@ namespace boost
template <class I1, class I2>
struct apply
:
# if BOOST_WORKAROUND(BOOST_MSVC, == 1200)
# if BOOST_WORKAROUND(__GNUC__, == 2) && BOOST_WORKAROUND(__GNUC_MINOR__, BOOST_TESTED_AT(95))
iterator_difference<I1>
# elif BOOST_WORKAROUND(BOOST_MSVC, == 1200)
mpl::if_<
is_convertible<I2,I1>
, typename I1::difference_type
@ -573,6 +575,14 @@ namespace boost
// ----------------
//
# if BOOST_WORKAROUND(__GNUC__, == 2) && BOOST_WORKAROUND(__GNUC_MINOR__, BOOST_TESTED_AT(95))
// GCC-2.95 eagerly instantiates templated constructors and conversion
// operators in convertibility checks, causing premature errors.
# define BOOST_ITERATOR_CONVERTIBLE(a,b) mpl::true_()
# else
# define BOOST_ITERATOR_CONVERTIBLE(a,b) is_convertible<a,b>()
# endif
# define BOOST_ITERATOR_FACADE_INTEROP(op, result_type, return_prefix, base_op) \
BOOST_ITERATOR_FACADE_INTEROP_HEAD(inline, op, result_type) \
{ \
@ -582,8 +592,8 @@ namespace boost
)); \
return_prefix iterator_core_access::base_op( \
static_cast<Derived1 const&>(lhs) \
, static_cast<Derived2 const&>(rhs) \
, is_convertible<Derived2,Derived1>() \
, static_cast<Derived2 const&>(rhs) \
, BOOST_ITERATOR_CONVERTIBLE(Derived2,Derived1) \
); \
}