Macro Expansion: Argument with Commas

Question

The code I\'m working on uses some very convoluted macro voodoo in order to generate code, but in the end there is a construct that looks like this

#define A         


        

Answer 1

Curiuosly enough, the following appears to work in MSVC (tested with 2010 and 2015).

#define ARGS 1,2,3

#define OUTER(...) INNER PARAN(__VA_ARGS__)
#define PARAN(...) (__VA_ARGS__)
#define INNER(A,B,C) A + B + C

int a = OUTER(ARGS);

I don't know that it's supposed to work by the letter of the standard, in fact I have a hunch it's not. Could still be conditionally compiled just for MSVC, as a workaround.

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[EDIT]  P.S.  As pointed out in the comments, the above is (another) non-standard MSVC behavior. Instead, the alternative workarounds posted by @rici and @JohnBollinger in the respective replies are compliant, thus recommended.