Re: [boost] [preprocessor] BOOST_PP_OVERLOAD not defined if variadic macros not supported.

Subject: Re: [boost] [preprocessor] BOOST_PP_OVERLOAD not defined if variadic macros not supported.
From: Nathan Ridge (zeratul976_at_[hidden])
Date: 2013-04-06 16:54:35

> It would be very nice if BOOST_PP_OVERLOAD errored explicitly if variadic
> macros were not supported by the compiler, or at lease have a gentle
> reminder to the reader in BOOST_PP_OVERLOAD documentation (and, where
> appropriate, in other places) that variadic macros are only standard in
> c++11 and may not be supported on all compilers, hence one might get a
> BOOST_PP_OVERLOAD undeclared error.

The Boost preprocessor docs say under Topics -> Variadic Macros that:

"In the documentation, headers which have variadic macros,
and
variadic 
macros themselves, have a notation of '(v)' appended to them.
For the 
variadic macros themselves this signifies that
BOOST_PP_VARIADICS must 
be 1 for those variadic macros to be usable."

and BOOST_PP_OVERLOAD does indeed have a '(v)' after its name in the
documentation.

However, I agree that this should be made more explicit, because just
looking at the page for BOOST_PP_OVERLOAD, one may not know what the
'(v)' signifies. Perhaps the '(v)' could be a link to the paragraph
I quoted?

Regards,
Nate