From: utzoo!decvax!duke!harpo!utah-cs!utah-gr!thomas Newsgroups: net.unix-wizards Title: Re: Library functions with non-integer return types Article-I.D.: utah-gr.563 Posted: Mon Sep 20 06:00:04 1982 Received: Tue Sep 21 06:27:54 1982 References: sri-unix.3341 When you're using PCC, if you do say extern, then NO storage is even allocated. Extern applied to data items generates an undefined reference if the data item is not declared somewhere without an extern. Extern applied to functions is exactly the same as declaring a function without saying extern. =Spencer