git: 4d004ccce24b - main - Document strnstr()'s history.

From: David E. O'Brien <obrien_at_FreeBSD.org>
Date: Tue, 22 Aug 2023 06:41:13 UTC 
The branch main has been updated by obrien:

URL: https://cgit.FreeBSD.org/src/commit/?id=4d004ccce24ba06f0043503570d1fdbd39c9211f

commit 4d004ccce24ba06f0043503570d1fdbd39c9211f
Author:     David E. O'Brien <obrien@FreeBSD.org>
AuthorDate: 2023-08-22 06:40:46 +0000
Commit:     David E. O'Brien <obrien@FreeBSD.org>
CommitDate: 2023-08-22 06:40:46 +0000

    Document strnstr()'s history.
---
 lib/libc/string/strstr.3 | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/libc/string/strstr.3 b/lib/libc/string/strstr.3
index 25af1ac6c08b..7ff9ec8c54e1 100644
--- a/lib/libc/string/strstr.3
+++ b/lib/libc/string/strstr.3
@@ -152,3 +152,9 @@ The
 function
 conforms to
 .St -isoC .
+.Sh HISTORY
+The
+.Fn strnstr
+function was introduced by
+.Fx 4.5
+and is non-standard.