[PATCH] More implicit typename fixes

[Nathan Myers]

On Fri, Dec 21, 2001 at 10:44:29PM +0100, Paolo Carlini wrote:
> by compiling 17_intro/headers.cc with -Wsystem-headers I spotted a few more
> implicit typename lurking in the library.
> ...
> P.S. Interestingly, this time too (as already reported in
> http://gcc.gnu.org/ml/libstdc++/2001-12/msg00327.html) I saw a spurious
> (correct?) warning for line 169 of locale_facets.h:
> 
>   template<typename _CharT>
>     class ctype : public __ctype_abstract_base<_CharT>
>     {
>     public:
>       // Types:
>       typedef _CharT      char_type;
>       typedef typename ctype::mask  mask;       <====== 169

That doesn't look spurious to me.  I suspect (without looking)
that what's wanted is

      typedef typename __ctype_abstract_base<_CharT>::mask  mask;

BTW, does the word "_abstract_" stuck in implementation class names 
actually help anybody's comprehension?  Does it mean anything? 

Nathan Myers
ncm at cantrip dot org