1 files changed, 59 insertions, 0 deletions

diff --git a/src/regress/lib/libc/getopt/getopt-test.c b/src/regress/lib/libc/getopt/getopt-test.c
new file mode 100644
index 0000000000..40901dcfcf
--- /dev/null
+++ b/src/regress/lib/libc/getopt/getopt-test.c
@@ -0,0 +1,59 @@
+/* $OpenBSD: getopt-test.c,v 1.1 2020/03/23 03:01:21 schwarze Exp $ */
+/*
+ * Copyright (c) 2020 Ingo Schwarze <schwarze@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/*
+ * Process command line options and arguments according to the
+ * optstring in the environment variable OPTS.  Write:
+ * OPT(c) for an option "-c" without an option argument
+ * OPT(carg) for an option "-c" with an option argument "arg"
+ * ARG(arg) for a non-option argument "arg"
+ * NONE(arg) for a non-option argument "arg" processed with OPTS =~ ^-
+ * ERR(?c) for an invalid option "-c", or one lacking an argument
+ * ERR(:c) for an option "-c" lacking an argument while OPTS =~ ^:
+ */
+int
+main(int argc, char *argv[])
+{
+        char    *optstring;
+        int      ch;
+
+        if ((optstring = getenv("OPTS")) == NULL)
+                optstring = "";
+
+        opterr = 0;
+        while ((ch = getopt(argc, argv, optstring)) != -1) {
+                switch (ch) {
+                case '\1':
+                        printf("NONE(%s)", optarg);
+                        break;
+                case ':':
+                case '?':
+                        printf("ERR(%c%c)", ch, optopt);
+                        break;
+                default:
+                        printf("OPT(%c%s)", ch, optarg == NULL ? "" : optarg);
+                        break;
+                }
+        }
+        while (optind < argc)
+                printf("ARG(%s)", argv[optind++]);
+        putchar('\n');
+        return 0;
+}