bin/59547: pax -rw choking on 256-byte filename

[ef%math.uni-bonn.de@localhost]

>Number:         59547
>Category:       bin
>Synopsis:       pax -rw chokes on 256-byte filename
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 23 17:40:00 +0000 2025
>Originator:     Edgar Fuss
>Release:        NetBSD 10.1_STABLE
>Organization:
	Mathematisches Institut der Uni Bonn
>Environment:
System: NetBSD peene.math.uni-bonn.de 10.1_STABLE NetBSD 10.1_STABLE (MI-Server) #13: Tue Jun 3 13:39:55 CEST 2025 ef%peene.math.uni-bonn.de@localhost:/var/work/obj-10/sys/arch/amd64/compile/miserv amd64
Architecture: x86_64
Machine: amd64
>Description:
	When copying a tree containing a 256-byte filename, pax -rw tries to create the destination with a random suffix appended, which fails.
>How-To-Repeat:
	pax -rw foo bar where foo contains a 256-byte filename
>Fix: