Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 7/7/83; site rlgvax.UUCP Path: utzoo!linus!security!genrad!decvax!harpo!seismo!rlgvax!guy From: guy@rlgvax.UUCP (Guy Harris) Newsgroups: net.unix-wizards Subject: Re: UNIX source code errors detected by new C compiler Message-ID: <833@rlgvax.UUCP> Date: Sun, 17-Jul-83 03:11:49 EDT Article-I.D.: rlgvax.833 Posted: Sun Jul 17 03:11:49 1983 Date-Received: Sun, 17-Jul-83 13:21:20 EDT References: <578@hao.UUCP>, <707@uw-beaver> Organization: CCI Office Systems Group, Reston, VA Lines: 9 The trouble is that multiple global definitions aren't seen by the compiler (unless you do something strange) but by the linker. The UNIX 5.0 (System V) linker DOES forbid them, I believe. (BTW, the "=+" operators and initializations without "=" are no longer supported by the 5.0 C compiler.) I have gotten into the habit of using "extern" in all declarations in include files and putting the definition of the global in only one source file. Guy Harris {seismo,mcnc,we13,brl-bmd,allegra}!rlgvax!guy