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authorEd Maste <emaste@FreeBSD.org>2021-01-11 00:02:56 +0000
committerEd Maste <emaste@FreeBSD.org>2021-01-15 14:25:36 +0000
commit23b5fa56a182574fef416caeb55e6c735087e411 (patch)
tree80d453e5b9649bb3da0562e6f11d4a62c9df819f /usr.bin/cmp
parentc586a84d56f37eee73d880172ec7f2a8152e58ab (diff)
Diffstat (limited to 'usr.bin/cmp')
-rw-r--r--usr.bin/cmp/cmp.c4
-rwxr-xr-xusr.bin/cmp/tests/cmp_test2.sh14
2 files changed, 17 insertions, 1 deletions
diff --git a/usr.bin/cmp/cmp.c b/usr.bin/cmp/cmp.c
index c762f1346abf..47f9b671985c 100644
--- a/usr.bin/cmp/cmp.c
+++ b/usr.bin/cmp/cmp.c
@@ -92,7 +92,6 @@ main(int argc, char *argv[])
break;
case 's': /* silent run */
sflag = true;
- zflag = true;
break;
case 'x': /* hex output */
lflag = true;
@@ -149,6 +148,9 @@ main(int argc, char *argv[])
skip1 = argc > 2 ? strtol(argv[2], NULL, 0) : 0;
skip2 = argc == 4 ? strtol(argv[3], NULL, 0) : 0;
+ if (sflag && skip1 == 0 && skip2 == 0)
+ zflag = true;
+
if (fd1 == -1) {
if (fd2 == -1) {
c_link(file1, skip1, file2, skip2);
diff --git a/usr.bin/cmp/tests/cmp_test2.sh b/usr.bin/cmp/tests/cmp_test2.sh
index 2b0d66382d36..7f9801fc92bd 100755
--- a/usr.bin/cmp/tests/cmp_test2.sh
+++ b/usr.bin/cmp/tests/cmp_test2.sh
@@ -62,8 +62,22 @@ symlink_body() {
atf_check -s not-exit:0 -o ignore -e ignore cmp -h a.lnk adup.lnk
}
+atf_test_case pr252542
+pr252542_head()
+{
+ atf_set "descr" "Test cmp(1) -s with file offset skips"
+}
+pr252542_body()
+{
+ echo -n '1234567890' > a
+ echo -n 'abc567890' > b
+ atf_check -s exit:0 cmp -s a b 4 3
+ atf_check -s exit:1 -o ignore cmp -z a b 4 3
+}
+
atf_init_test_cases()
{
atf_add_test_case special
atf_add_test_case symlink
+ atf_add_test_case pr252542
}