for implied stdin, do not corrupt argv[0]

diff --git a/usr.bin/sort/sort.c b/usr.bin/sort/sort.c
index 1e5e22b..1df1d5f 100644 (file)
--- a/usr.bin/sort/sort.c
+++ b/usr.bin/sort/sort.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: sort.c,v 1.2 1997/01/22 06:53:16 millert Exp $        */
+/*     $OpenBSD: sort.c,v 1.3 1997/01/26 00:02:25 deraadt Exp $        */
 
 /*-
  * Copyright (c) 1993
@@ -46,7 +46,7 @@ static char copyright[] =
 #if 0
 static char sccsid[] = "@(#)sort.c     8.1 (Berkeley) 6/6/93";
 #else
-static char rcsid[] = "$OpenBSD: sort.c,v 1.2 1997/01/22 06:53:16 millert Exp $";
+static char rcsid[] = "$OpenBSD: sort.c,v 1.3 1997/01/26 00:02:25 deraadt Exp $";
 #endif
 #endif /* not lint */
 
@@ -217,9 +217,15 @@ main(argc, argv)
        settables(fldtab[0].flags);
        num_init();
        fldtab->weights = gweights;
-       if (optind == argc)
-               argv[--optind] = devstdin;
-       filelist.names = argv+optind;
+       if (optind == argc) {
+               static char *names[2];
+
+               names[0] = devstdin;
+               names[1] = NULL;
+               filelist.names = names;
+               optind--;
+       } else
+               filelist.names = argv+optind;
        if (SINGL_FLD)
                get = makeline;
        else