remove sh warning when invoked with no args

[bsdgames-darwin.git] / arithmetic / arithmetic.c

diff --git a/arithmetic/arithmetic.c b/arithmetic/arithmetic.c
index 29ffcb9949d60e7a40bd946792e8f8f3cb406c77..d06776b89ab28ed0a3f910e2634cc611c27c92ff 100644 (file)
--- a/arithmetic/arithmetic.c
+++ b/arithmetic/arithmetic.c
@@ -1,4 +1,4 @@
-/*     $NetBSD: arithmetic.c,v 1.9 1997/10/15 08:53:24 is Exp $        */
+/*     $NetBSD: arithmetic.c,v 1.13 1999/07/17 19:11:30 hubertf Exp $  */
 
 /*
  * Copyright (c) 1989, 1993
@@ -46,7 +46,7 @@ __COPYRIGHT("@(#) Copyright (c) 1989, 1993\n\
 #if 0
 static char sccsid[] = "@(#)arithmetic.c       8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: arithmetic.c,v 1.9 1997/10/15 08:53:24 is Exp $");
+__RCSID("$NetBSD: arithmetic.c,v 1.13 1999/07/17 19:11:30 hubertf Exp $");
 #endif
 #endif /* not lint */
 
@@ -86,19 +86,20 @@ __RCSID("$NetBSD: arithmetic.c,v 1.9 1997/10/15 08:53:24 is Exp $");
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
+#include <unistd.h>
 
 int    getrandom __P((int, int, int));
-void   intr __P((int));
+void   intr __P((int)) __attribute__((__noreturn__));
 int    main __P((int, char *[]));
 int    opnum __P((int));
 void   penalise __P((int, int, int));
 int    problem __P((void));
 void   showstats __P((void));
-void   usage __P((void));
+void   usage __P((void)) __attribute__((__noreturn__));
 
-char keylist[] = "+-x/";
-char defaultkeys[] = "+-";
-char *keys = defaultkeys;
+const char keylist[] = "+-x/";
+const char defaultkeys[] = "+-";
+const char *keys = defaultkeys;
 int nkeys = sizeof(defaultkeys) - 1;
 int rangemax = 10;
 int nright, nwrong;
@@ -121,10 +122,13 @@ main(argc, argv)
        extern int optind;
        int ch, cnt;
 
+       /* Revoke setgid privileges */
+       setregid(getgid(), getgid());
+
        while ((ch = getopt(argc, argv, "r:o:")) != -1)
                switch(ch) {
                case 'o': {
-                       char *p;
+                       const char *p;
 
                        for (p = keys = optarg; *p; ++p)
                                if (!strchr(keylist, *p))
@@ -161,7 +165,7 @@ main(argc, argv)
 /* Handle interrupt character.  Print score and exit. */
 void
 intr(dummy)
-       int dummy;
+       int dummy __attribute__((__unused__));
 {
        showstats();
        exit(0);