boost_concept_check.h: Import some changes from upsteam (Boost) version.

2002-01-02  Phil Edwards  <pme@gcc.gnu.org>

	* include/bits/boost_concept_check.h:  Import some changes from
	upsteam (Boost) version.

From-SVN: r48489

libstdc++-v3/ChangeLog

+2002-01-02  Phil Edwards  <pme@gcc.gnu.org>
+
+	* include/bits/boost_concept_check.h:  Import some changes from
+	upsteam (Boost) version.
+
 2002-01-02  Paolo Carlini  <pcarlini@unitus.it>
 
 	* include/bits/stl_algobase.h (copy_n + helpers,

libstdc++-v3/include/bits/boost_concept_check.h

@@ -388,7 +388,7 @@ struct _Aux_require_same<_Tp,_Tp> { typedef _Tp _Type; };
       __function_requires< _DefaultConstructibleConcept<_Tp> >();
       __function_requires< _AssignableConcept<_Tp> >();
       __function_requires< _EqualityComparableConcept<_Tp> >();
-      typedef typename std::iterator_traits<_Tp>::value_type _V;
+//      typedef typename std::iterator_traits<_Tp>::value_type _V;
       (void)*__i;                       // require dereference operator
     }
     _Tp __i;
@@ -411,7 +411,7 @@ struct _Aux_require_same<_Tp,_Tp> { typedef _Tp _Type; };
       __function_requires< _TrivialIteratorConcept<_Tp> >();
       // require iterator_traits typedef's
       typedef typename std::iterator_traits<_Tp>::difference_type _D;
-      __function_requires< _SignedIntegerConcept<_D> >();
+//      __function_requires< _SignedIntegerConcept<_D> >();
       typedef typename std::iterator_traits<_Tp>::reference _R;
       typedef typename std::iterator_traits<_Tp>::pointer _Pt;
       typedef typename std::iterator_traits<_Tp>::iterator_category _Cat;