rcvtty.c: Use struct utmpx's ut_line[], not a copy.

Silences gcc 8.1.1's warning that strncpy(3)'s length is the sizeof of
the source, not the destination, by removing the strncpy and passing the
source to alert() where it's only read, not written.

diff --git a/uip/rcvtty.c b/uip/rcvtty.c
index 4098d70..73440fb 100644 (file)
--- a/uip/rcvtty.c
+++ b/uip/rcvtty.c
@@ -82,7 +82,7 @@ int
 main (int argc, char **argv)
 {
     int md, vecp = 0;
 main (int argc, char **argv)
 {
     int md, vecp = 0;

-    char *cp, *user, buf[BUFSIZ], tty[BUFSIZ];
+    char *cp, *user, buf[BUFSIZ];

     char **argp, **arguments, *vec[MAXARGS];
     struct utmpx *utp;
 
     char **argp, **arguments, *vec[MAXARGS];
     struct utmpx *utp;
 


@@ -160,13 +160,11 @@ main (int argc, char **argv)
         if (utp->ut_type == USER_PROCESS && utp->ut_user[0] != 0
                && utp->ut_line[0] != 0
                && strncmp (user, utp->ut_user, sizeof(utp->ut_user)) == 0) {
         if (utp->ut_type == USER_PROCESS && utp->ut_user[0] != 0
                && utp->ut_line[0] != 0
                && strncmp (user, utp->ut_user, sizeof(utp->ut_user)) == 0) {

-            strncpy (tty, utp->ut_line, sizeof(utp->ut_line));
-           alert (tty, md);
+           alert(utp->ut_line, md);

         }
     }
     endutxent();
 #else
         }
     }
     endutxent();
 #else

-    NMH_UNUSED (tty);

     NMH_UNUSED (utp);
 #endif /* HAVE_GETUTXENT */
 
     NMH_UNUSED (utp);
 #endif /* HAVE_GETUTXENT */