Re: [boost] Friend class with namespace gives compiler error for C6000 TI

Subject: Re: [boost] Friend class with namespace gives compiler error for C6000 TI
From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2015-02-25 08:18:52

On Wed, Feb 25, 2015 at 2:15 PM, Alin Popa <alin.popa_at_[hidden]> wrote:
> Hi,
>
> I compile my project with boost header only files, the compiler is C6000
> Texas Instruments.
>
> The compile errors occurs for example in
> "boost/algorithm/string/find_iterator.hpp"
>
> I have extracted the cause of the problem in the next example code:
>
> namespace boost {
>   namespace iterators {
>     class iterator_core_access {
>     public:
>       iterator_core_access(){}
>       ~iterator_core_access(){}
>     };
>   }
> using iterators::iterator_core_access;
> }
> class testFriend {
> private:
>   // don't work, compiler error: error: namespace "boost" has no actual
> member "iterator_core_access"
>   friend class ::boost::iterator_core_access; // here is the problem
>   // it works, compiles ok, this was my cure
>   //friend class ::boost::iterators::iterator_core_access;
> };
>
> int main ()
> {
>     // it works
>     ::boost::iterator_core_access a;
>     return 0;
> }
>
> Do you guys know what is the reason of this ?
> With msvc and g++ works fine.

Most of Boost.Iterator components, including iterator_core_access,
were moved to the boost::iterators namespace in recent releases. The
names are imported into boost namespace for backward compatibility. As
far as I can tell, this should be enough and the friend declaration
should still be valid. If I'm not missing anything, this is a compiler
issue.