RE: variadic macros

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On 
> Behalf Of Brett Bibby
> Sent: Tuesday, December 21, 2004 1:55 AM
> To: [email protected]
> Subject: [GD-Windows] variadic macros
> 
> Is there any way to support variadic macros in Visual Studio 
> like gcc supports?  If not, how do people write stuff like 
> custom asserts that take variable parameters?
> 
> http://gcc.gnu.org/onlinedocs/cpp/Variadic-Macros.html
> 
> Thanks!
> Brett


Depending on what you're after, you might find that the __noop
intrinsic will help you out.


#ifdef _DEBUG
void _MyDebugPrintf(const char* fmt, ...);
#define DPF _MyDebugPrintf
#else
#define DPF __noop
#endif

// later, ...

	DPF("%s %s this works", FuncA(), FuncB());

FuncA and FuncB (or parameters in general) are not evaluated
in non _DEBUG builds.  The compiler ignores the statement.

This is obviously not variadic macros, but you can do quite a
bit with it.

Paul


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