To: djgpp AT delorie DOT com
Subject: Re: A program to find all unused symbols in a C program
Message-ID: <19970227.181936.4687.1.chambersb@juno.com>
References: <34DB2D72539 AT fs2 DOT mt DOT umist DOT ac DOT uk> <5f3oan$6ol AT flex DOT uunet DOT pipex DOT com>
	<3315BD67 DOT 75C229F9 AT alcyone DOT com>
From: chambersb AT juno DOT com (Benjamin D Chambers)
Date: Thu, 27 Feb 1997 21:16:29 EST


On Thu, 27 Feb 1997 08:59:19 -0800 Erik Max Francis <max AT alcyone DOT com>
writes:
>nikki wrote:
>
>> just a thought, but putting 'static' before global variables and
>> compiling
>> with -Wall will show unusued global variables too. as well as local
>> unused
>> ones.
>
>Those are static external, not external (e.g., global).  The static
>qualifier before a variable definitions outside of any block means 
>that the
>linkage is internal to that file.  You can't reference it in another 
>file.
>
>In other words, it's _not_ global across files if you do this.

Isn't that what's wanted?  When you try to link, you'll get an error
saying that the link whatever can't be found - now you KNOW that that
variable was accessed (else it wouldn't generate an error).

...Chambers