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 2042095edcc8810d7584a6cf45f7163d7bd6fea0..d06776b89ab28ed0a3f910e2634cc611c27c92ff 100644 (file)
--- a/arithmetic/arithmetic.c
+++ b/arithmetic/arithmetic.c
@@ -1,4 +1,4 @@
-/*     $NetBSD: arithmetic.c,v 1.11 1998/09/13 15:27:25 hubertf 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 1.11 1998/09/13 15:27:25 hubertf Exp $");
+__RCSID("$NetBSD: arithmetic.c,v 1.13 1999/07/17 19:11:30 hubertf Exp $");
 #endif
 #endif /* not lint */
 
@@ -97,9 +97,9 @@ int   problem __P((void));
 void   showstats __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;
@@ -122,10 +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))
@@ -162,7 +165,7 @@ main(argc, argv)
 /* Handle interrupt character.  Print score and exit. */
 void
 intr(dummy)
-       int dummy;
+       int dummy __attribute__((__unused__));
 {
        showstats();
        exit(0);