K&R-style variadic functions

[Paulo Pinto]

On Tuesday, 17 July 2012 at 15:13:52 UTC, Regan Heath wrote:
> On Tue, 17 Jul 2012 15:50:27 +0100, Jacob Carlborg 
> <doob at me.com> wrote:
>
>> On 2012-07-17 16:37, Regan Heath wrote:
>>
>>> All my googling for "old style" "variadic" etc returned the 
>>> use of
>>> va_alist and va_dcl so I can't see where/why Clang would do 
>>> what it's
>>> doing.
>>
>> To be accurate it's the libclang function 
>> "clang_isFunctionTypeVariadic" that returns true.
>>
>> http://clang.llvm.org/doxygen/group__CINDEX__TYPES.html#ga343b2463b0ed4b259739242cf26c3ae2
>
> Is Clang open source, can we see the code for that function?  
> Perhaps it's a bug.. ANSI C may have made () without "void" 
> obsolete, but no compiler I've ever used has actually enforced 
> that - or perhaps C++ made old-style function 
> definition/declarations obsolete and allowed () back again.
>
> R

In C++, a function with no parameters () is a synonym for (void).

--
Paulo