Re: [Boost-users] warning in boost concept

Subject: Re: [Boost-users] warning in boost concept
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2010-04-08 08:52:48

oberhoff wrote:
> Hi,
> 
> this is using boost 1.42, I think the same happens in 1.43
> 
> Using boost::accumulators generates a compiler warning in 
> boost/concept_check.hpp:335. it seems the Arg member is a reference, but 
> gcc doesnt like that there is no way to initialize it since it is 
> private and the class does not have a constructor. this is particularly 
> annoying since due to metaprogramming and the lag of variadic templates 
> the instantiation trace in the error message for a single error is a few 
> pages long, and it comes each time I instantiate an accumulator. is 
> there a way to avoid this?

Declaring a constructor without defining it would fix the issue.