lib/60560: libarchive tests are failing

["Andreas Gustafsson via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60560
>Category:       lib
>Synopsis:       libarchive tests are failing
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Aug 08 16:05:00 +0000 2026
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date >= 2026.05.03.14.40.12
>Organization:
  
>Environment:
System: NetBSD
Architecture: x86_64
Machine: amd64
>Description:

The lib/libarchive/t_libarchive:libarchive test case started failing
with the import of libarchive-3.8.7 on 2026.05.03.14.40.12.  This was
not reported by the TNF i386 or amd64 testbed because the test is
skipped due to requiring more memory than the test VMs are configured
with, but it does fail on the evbarm-aarch64 testbed and on real i386
and amd64 hardware.

Here is the output from a couple of recent failed test runs:

  https://releng.netbsd.org/b5reports/evbarm-aarch64/2026/2026.08.07.14.31.36/test.html#lib_libarchive_t_libarchive_libarchive
  https://www.gson.org/netbsd/bugs/build/amd64-baremetal/2026/2026.08.02.16.45.28/test.html#lib_libarchive_t_libarchive_libarchive

>How-To-Repeat:

Run the ATF tests on a system with at least 400 MB of free user memory.

>Fix: