bin/58887: mtree: Duplicate entries in an mtree file cause mtree to coredump

[jlduran%gmail.com@localhost]

>Number:         58887
>Category:       bin
>Synopsis:       mtree: Duplicate entries in an mtree file cause mtree to coredump
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Dec 09 18:55:00 +0000 2024
>Originator:     Jose Luis Duran
>Release:        trunk
>Organization:
FreeBSD
>Environment:
NetBSD netbsd10.home.arpa 10.0 NetBSD 10.0 (GENERIC) #0: Thu Mar 28 08:33:33 UTC 2024  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64

>Description:
A FreeBSD bug was reported[^1] that the following mtree specification file would 
cause mtree to produce a core dump:

# cat test.mtree
/set type=dir