Hello,

with Intel(R) Composer XE 2013 Update 1 (package 119) the behaviour of the preprocessor with __VA_ARGS__ has changed unter Windows (Visual Studio 2010 mode).
It seems that the __VA_ARGS__ arguments are inserted now as one argument although they are seperated by commas. Therefore the following preprocessor commands behave differently with the new version as before with Intel Composer XE 2011 Update 13 (package 371). 

#define BOOST_PP_VARIADICS_MSVC 1
#define BOOST_PP_VARIADICS
#include <boost/preprocessor/variadic/size.hpp>
#define ENUMTEXT_ARGUMENT(xxx) { xxx , #xxx }
#define ENUMTEXT_A1(xxx) ENUMTEXT_ARGUMENT(xxx)
#define ENUMTEXT_A2(xxx, ...) ENUMTEXT_ARGUMENT(xxx), BOOST_PP_CAT(ENUMTEXT_A, BOOST_PP_VARIADIC_SIZE(__VA_ARGS__))( __VA_ARGS__ )
#define ENUMTEXT_LIST(...) BOOST_PP_CAT(ENUMTEXT_A, BOOST_PP_VARIADIC_SIZE(__VA_ARGS__))(__VA_ARGS__)
#define ENUMTEXT(xxx) ENUMTEXT_LIST(xxx)
ENUMTEXT_LIST(Test, Test2)

I used the following command to compile it: icl /Qms0 /P meow.cpp /IF:\Libs\boost_1_50_0 

It generates the output:

#line 1 "meow.cpp"
#line 1 "F:\Libs\boost_1_50_0\boost/preprocessor/variadic/size.hpp"
#line 1 "F:\Libs\boost_1_50_0\boost/preprocessor/cat.hpp"
#line 1 "F:\Libs\boost_1_50_0\boost/preprocessor/config/config.hpp"
#line 18 "F:\Libs\boost_1_50_0\boost/preprocessor/cat.hpp"
#line 17 "F:\Libs\boost_1_50_0\boost/preprocessor/variadic/size.hpp"
#line 1 "F:\Libs\boost_1_50_0\boost/preprocessor/config/config.hpp"
#line 18 "F:\Libs\boost_1_50_0\boost/preprocessor/variadic/size.hpp"
#line 4 "meow.cpp"
{ Test, Test2 , "Test, Test2" }, { , }

Before it was:

{ Test , "Test" }, { Test2 , "Test2" }

Is the new behaviour the corret one?
Thanks in advance.