🚀 go-pugleaf

In various books describing the expansion to ANSI-C,
one of the differences is described as the inclusion
of the ",..." operator for function prototypes
[ meaning that a variable number of arguments follow-
  e.g. int printf (const char *, ...);  ]

My question is: is this legal : int foo (...);

That is - can I legally declare a function 
with none or many arguments, or does it HAVE to have
at least one argument.

This came up because gcc version 2.2.2 let me do it,
but gave a warning when used with the -pedantic option.
Another tool I used (gnu GCT version 1.3) bombed on this construct.

Thanks for your time - I trust this isn't a FAQ...
[individually cross posted to comp.lang.c as well]

			Regards, Scott