mempcpy is documented in memcpy.3, but the manpage lacks STANDARDS (it's a glibc-ism) and HISTORY (added in 2021 and present in at least on 13.x release).
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=8c8ffe541eabb23e21ddffb534ecda7ac6d7e04a commit 8c8ffe541eabb23e21ddffb534ecda7ac6d7e04a Author: Gordon Bergling <gbe@FreeBSD.org> AuthorDate: 2023-11-18 09:09:40 +0000 Commit: Gordon Bergling <gbe@FreeBSD.org> CommitDate: 2023-11-18 09:09:40 +0000 Add a HISTORY section for memcpy(3) and mempcpy(3) The memcpy() function first appeared in AT&T System V UNIX and was reimplemented for 4.3BSD-Tahoe. The mempcpy() function first appeared in FreeBSD 13.1. PR: 272227 MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D42630 lib/libc/string/memcpy.3 | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)
A commit in branch stable/14 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=7041faf5a5bcd6d49d382edafb313aa8c9726791 commit 7041faf5a5bcd6d49d382edafb313aa8c9726791 Author: Gordon Bergling <gbe@FreeBSD.org> AuthorDate: 2023-11-18 09:09:40 +0000 Commit: Gordon Bergling <gbe@FreeBSD.org> CommitDate: 2023-11-25 08:25:03 +0000 Add a HISTORY section for memcpy(3) and mempcpy(3) The memcpy() function first appeared in AT&T System V UNIX and was reimplemented for 4.3BSD-Tahoe. The mempcpy() function first appeared in FreeBSD 13.1. PR: 272227 Differential Revision: https://reviews.freebsd.org/D42630 (cherry picked from commit 8c8ffe541eabb23e21ddffb534ecda7ac6d7e04a) lib/libc/string/memcpy.3 | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)
A commit in branch stable/13 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=b54addc27ceb76abf9b4aeec3bca924e9599169f commit b54addc27ceb76abf9b4aeec3bca924e9599169f Author: Gordon Bergling <gbe@FreeBSD.org> AuthorDate: 2023-11-18 09:09:40 +0000 Commit: Gordon Bergling <gbe@FreeBSD.org> CommitDate: 2023-11-25 08:25:25 +0000 Add a HISTORY section for memcpy(3) and mempcpy(3) The memcpy() function first appeared in AT&T System V UNIX and was reimplemented for 4.3BSD-Tahoe. The mempcpy() function first appeared in FreeBSD 13.1. PR: 272227 Differential Revision: https://reviews.freebsd.org/D42630 (cherry picked from commit 8c8ffe541eabb23e21ddffb534ecda7ac6d7e04a) lib/libc/string/memcpy.3 | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)