Re: [Boost-users] Preprocessor Question

Hartmut Kaiser wrote:

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Thanks for the solution,

but it was actually failing in getting number of arguments to the macro.

warning C4003: not enough actual parameters for macro 'PP_ARG_N'

so PP_NARG evaluates to nothing and subsequently everything fails.

Please note that the VC preprocessor does not support variadic macros, which makes the valid implementation of PP_NARG() fail.

I can compile

void f(int, int) {}

#define test(...) __VA_ARGS__ int main() { f(test(57, 21)); }

with msvc 9.0.

I stand corrected! Thanks for the info. Regards Hartmut ------------------- Meet me at BoostCon http://boostcon.com