git: e2ec8ee02a33 - main - uniq: Clean up and test obsolete options.

The branch main has been updated by des:

URL: https://cgit.FreeBSD.org/src/commit/?id=e2ec8ee02a33e39b8ff86a56e8a1ef5e84ac7e62

commit e2ec8ee02a33e39b8ff86a56e8a1ef5e84ac7e62
Author:     Dag-Erling Smørgrav <des@FreeBSD.org>
AuthorDate: 2024-01-12 15:40:40 +0000
Commit:     Dag-Erling Smørgrav <des@FreeBSD.org>
CommitDate: 2024-01-12 15:44:00 +0000

    uniq: Clean up and test obsolete options.
    
    MFC after:      1 week
    Sponsored by:   Klara, Inc.
    Reviewed by:    kevans
    Differential Revision:  https://reviews.freebsd.org/D43402
---
 usr.bin/uniq/tests/uniq_test.sh |  3 +++
 usr.bin/uniq/uniq.c             | 14 +++++---------
 2 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/usr.bin/uniq/tests/uniq_test.sh b/usr.bin/uniq/tests/uniq_test.sh
index 8dc2015734f6..537962eb6513 100755
--- a/usr.bin/uniq/tests/uniq_test.sh
+++ b/usr.bin/uniq/tests/uniq_test.sh
@@ -74,6 +74,7 @@ skip_fields_head() {
 skip_fields_body() {
 	printf "1 a\n2 a\n3 b\n4 b\n5 a\n6 a\n" >input
 	printf "1 a\n3 b\n5 a\n" >expected
+	atf_check_uniq -1
 	atf_check_uniq -f 1
 	atf_check_uniq --skip-fields 1
 }
@@ -85,6 +86,7 @@ skip_fields_tab_head() {
 skip_fields_tab_body() {
 	printf "1\ta\n2\ta\n3\tb\n4\tb\n5\ta\n6\ta\n" >input
 	printf "1\ta\n3\tb\n5\ta\n" >expected
+	atf_check_uniq -1
 	atf_check_uniq -f 1
 	atf_check_uniq --skip-fields 1
 }
@@ -107,6 +109,7 @@ skip_chars_head() {
 skip_chars_body() {
 	printf "1 a\n2 a\n3 b\n4 b\n5 a\n6 a\n" >input
 	printf "1 a\n3 b\n5 a\n" >expected
+	atf_check_uniq +2
 	atf_check_uniq -s 2
 	atf_check_uniq --skip-chars 2
 }
diff --git a/usr.bin/uniq/uniq.c b/usr.bin/uniq/uniq.c
index 0bc9b2b86af3..ef59d7339d0c 100644
--- a/usr.bin/uniq/uniq.c
+++ b/usr.bin/uniq/uniq.c
@@ -338,29 +338,25 @@ file(const char *name, const char *mode)
 static void
 obsolete(char *argv[])
 {
-	int len;
-	char *ap, *p, *start;
+	char *ap, *p;
 
 	while ((ap = *++argv)) {
 		/* Return if "--" or not an option of any form. */
 		if (ap[0] != '-') {
 			if (ap[0] != '+')
 				return;
-		} else if (ap[1] == '-')
+		} else if (ap[1] == '-') {
 			return;
+		}
 		if (!isdigit((unsigned char)ap[1]))
 			continue;
 		/*
 		 * Digit signifies an old-style option.  Malloc space for dash,
 		 * new option and argument.
 		 */
-		len = strlen(ap);
-		if ((start = p = malloc(len + 3)) == NULL)
+		if (asprintf(&p, "-%c%s", ap[0] == '+' ? 's' : 'f', ap + 1) < 0)
 			err(1, "malloc");
-		*p++ = '-';
-		*p++ = ap[0] == '+' ? 's' : 'f';
-		(void)strcpy(p, ap + 1);
-		*argv = start;
+		*argv = p;
 	}
 }