[boost] Wave/flex_string with VC7.0 + dinkumware (new problem)

From: Reece Dunn (msclrhd_at_[hidden])
Date: 2004-05-20 16:13:17

I reported that VC7 uses the correct implementation of reverse_iterator, and 
that this can be detected via BOOST_NO_STD_ITERATOR. Although this compiles, 
you cannot use reverse iterators.

The problem is that the iterator is of the form (const) T *, and this fails 
because there is not a correct implementation of iterator_traits (due to a 
lack of partial template specialization) that *is* detected by 
BOOST_NO_STD_ITERATOR_TRAITS.

The solution would therefore be to - in this case - provide an iterator 
wrapper around a standard pointer so it has the correct Iter::value_type, 
etc definitions. Is there an iterator_adaptor that provides this within 
boost? If not, should there be one? I am looking into this and will commit 
the solution to my iterator_adaptor-style implementation 
(sandbox/boost/fixed_string/detail/basic_string_impl.hpp).

NOTE: If you want to add any of my modifications to the Wave flex_string 
implementation, feel free, but be warned that I haven't run full tests on it 
yet and thus there might be bugs in it (especially the pod_xxx --> 
traits_type::xxx, since these functions have different parameters).

Regards,
Reece

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