Re: [boost] [preprocessor] Maybe a improvement of BOOST_PP_IS_EMPTY

On 11/20/2012 7:43 AM, Zhenghui Zhou wrote:

As I known, the undocument interface BOOST_PP_IS_EMPTY is not a general implementation to condider emptiness. There is a undefined behaviours when token concatenation return a invalid preprocessing token. Particularly, gcc restriction reports error.

See BOOST_IS_EMPTY in my variadic macros library in the sandbox.