Re: [Boost-users] Boost.Tribool: GCC4 and anonymous enums

From: Doug Gregor (dgregor_at_[hidden])
Date: 2005-06-01 14:09:53

On Jun 1, 2005, at 1:06 PM, Alo Sarv wrote:

> GCC4 seems to be rather picky on anonymous enums, and some code seems 
> to break in logic/tribool.hpp with the following error:
>
> boost/logic/tribool.hpp: In member function 
> `boost::logic::tribool::operator void 
> (boost::logic::tribool::dummy::*)()() const':
> boost/boost/logic/tribool.hpp:114: error: 
> `boost::logic::tribool::<anonymous enum>' is/uses anonymous type
> boost/boost/logic/tribool.hpp:114: error:   trying to instantiate 
> `template<class T> struct boost::is_integral'
> boost/boost/logic/tribool.hpp:114: error: 
> `boost::logic::tribool::<anonymous enum>' is/uses anonymous type
> boost/boost/logic/tribool.hpp:114: error:   trying to instantiate 
> `template<class T> struct boost::is_integral'
>
> Same error is repeated at lines 128, 161, and 162 (CVS HEAD).
>
> Workaround/patch is obvious (making the enum named),

Thanks for reporting this! I've given the enum a name, so the problem 
should go away.

>  but I haven't managed to create a minimal test-case for the behaviour 
> (the triggering code is rather large and there doesn't seem to be any 
> logic in what actually triggers the error). Any ideas?

Not really :(

        Doug