getopt (3) problem?

[Shiv Haris]

In article <1990Sep12.011152.26067 at maverick.ksu.ksu.edu> proot at ksuvax1.cis.ksu.edu (Paul T. Root) writes:
>In compiling and running some things, I have found that getopt doesn't act
>right. When it runs out of parameters instead of returning an EOF it returns
>a -1. 
>
>I have called my Rep and he said he'd pass it along. 
>
>
>The work around I use is like this:
>
>	while(( c = getopt( argc, argv, "d:m" )), c != EOF && c != -1 ) {
>		switch( c ) {
>		  .
>		}
>	}
>
>Keeping the world informed...
>Paul.


Take a quick look to see if your machine has type "char" to be unsigned.
if so then if you do a compare of

	(c != EOF) and c is 0xff and EOF is -1, will be false.

Hence you problem. The fix should really be:

	while(( c = getopt( argc, argv, "d:m" )) != 0xff) {
	}

Hope this helps,

-Shiv