getopt(3) can be called twice (once for bc and once for dc), so reinit getopt

ok deraadt@

diff --git a/usr.bin/dc/dc.c b/usr.bin/dc/dc.c
index 27afad5..3888700 100644 (file)
--- a/usr.bin/dc/dc.c
+++ b/usr.bin/dc/dc.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: dc.c,v 1.17 2015/11/03 04:58:58 mmcc Exp $    */
+/*     $OpenBSD: dc.c,v 1.18 2016/07/17 17:30:47 otto Exp $    */
 
 /*
  * Copyright (c) 2003, Otto Moerbeek <otto@drijf.net>
@@ -50,6 +50,8 @@ dc_main(int argc, char *argv[])
        if ((buf = strdup("")) == NULL)
                err(1, NULL);
        /* accept and ignore a single dash to be 4.4BSD dc(1) compatible */
+       optind = 1;
+       optreset = 1;
        while ((ch = getopt(argc, argv, "e:x-")) != -1) {
                switch (ch) {
                case 'e':