Re: [naviserver-devel] NS_GNUC_NONNULL on Windows?

[Ibrahim T. <it...@we...>]

Zoran Vasiljevic wrote:
> 
> Am 30.06.2005 um 00:47 schrieb Stephen Deasey:
> 
>> NS_GNUC_NONNULL is only used in the nscheck.h header because I haven't
>> had time to sprinkle it anywhere else  :-)   I think it's a pretty
>> useful feature, so I'd like to keep it.
>>
>> Macro varargs are not supported by any Microsoft compiler?
>>
> 
> No.

I checked again. No. Neiter does the manual mention it nor does 
the latest compiler accept it.

>> If you really can't find another solution, then redefining
>> NS_GNUC_NONNULL to take a single arg should work.  It can be called
>> multiple times, one for each non-null function argument.  But this is
>> ugly, so prefer to keep the varargs if you can.
> 
> 
> Ugly or not, this is what we have and must stick to it.
> But, this would mean if you start to utilize the macro
> in generic code, you'd have to use it with only one arg, right?

There is this old trick - using double parenthesis - to cope with 
this problem in the code, e.g.

#define MYPRINTF(x) printf x

MYPRINTF((stderr, "%s\n", "abc"));

> 
> Zoran

Ibrahim