RE: [boost] Re: BOOST_PP_COMMA, LPAREN,RPAREN delay eval?

From: Paul Mensonides (pmenso57_at_[hidden])
Date: 2004-03-21 19:07:28

 > -----Original Message-----
> From: boost-bounces_at_[hidden] 
> [mailto:boost-bounces_at_[hidden]] On Behalf Of Larry Evans

> Yes! Thanks very much. With source:

> however, g++ complains:
> 
> /usr/local/gcc-3.4-20040225/bin/g++ -ggdb -c -Wall -MMD -O0 
> -ggdb -I/home/evansl/prog_dev/boost-root.ln/boost_dev
> -I/home/evansl/prog_dev/boost-root.ln -o pp_ctor_forwarder.o 
> pp_ctor_forwarder.cpp
> pp_ctor_forwarder.cpp:49: error: `struct boost::mpl::at_c<VecOfTypes, 
> 0l>::type' is not a type
> pp_ctor_forwarder.cpp:49: error: ISO C++ forbids declaration of `a0' 
> with no type

These are because of a missing typename.  Instead of:

#define PP_CTOR_FORWARDER_PARAM(z, n, _) \
    at_c<VecOfTypes, n>::type BOOST_PP_CAT(a, n) \
    /**/

It should be:

#define PP_CTOR_FORWARDER_PARAM(z, n, _) \
    typename at_c<VecOfTypes, n>::type BOOST_PP_CAT(a, n) \
    /**/

> Again, thanks very much!

You're welcome.

Regards,
Paul Mensonides