Re: [Boost-users] Preprocessor Question

Subject: Re: [Boost-users] Preprocessor Question
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-11-16 12:55:03

AMDG

Hartmut Kaiser wrote:
>> 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.

In Christ,
Steven Watanabe