Re: Unexpected error when using hierarchy of template classes

[Simon Buchan]

JH Trauntvein wrote:
> Paul Pluzhnikov wrote:
>
> > "JH Trauntvein" <j.trauntvein@comcast.net> writes:
> >
> >
> > > test.cpp:13: error: object missing in reference to 'Value::storage'
> >
> > This looks like a gcc bug (but you need a language lawyer to say
> > for sure). Workarounds:
> >
> >    { out << this->Value::storage; }      or
> >    { out << this->storage; }
>
>
>
> Thanks,
>
> It turns out that I can invoke a member function of the base class
> which I had already defined called get_storage().  I didn't think to
> try using "this".
>
> Regards,
>
> Jon Trauntvein
This is very likely a bug in gcc's two-stage name lookup, as storage is 
_definitely_ not a dependant name.  this->storage (preffered over 
this->Value::storage to enable propper name lookup) disables 
non-dependant name lookup for storage by making it dependant (this is a 
dependant name.)