Automated report: NetBSD-current/amd64 build failure

[NetBSD Test Fixture <bracket%NetBSD.org@localhost>]

This is an automatically generated notice of a NetBSD-current/amd64
build failure.

The failure occurred on babylon4.netbsd.org, a NetBSD/amd64 host,
using sources from CVS date 2026.08.29.16.32.45.

An extract from the build.sh output follows:

    #   compile  sys/t_kill.o
    /tmp/build/2026.08.29.16.32.45-amd64/tools/bin/x86_64--netbsd-gcc -O2   -std=gnu11    -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-sign-compare  -Wsystem-headers   -Wno-traditional   -Wa,--fatal-warnings  -Wreturn-type -Wswitch -Wshadow -Wcast-qual -Wwrite-strings -Wextra -Wno-unused-parameter -Wno-sign-compare -Wsign-compare -Wformat=2  -Wno-format-zero-length  -Werror -Wno-missing-noreturn    -Wno-address-of-packed-member    -Wno-error=deprecated     -fPIE    --sysroot=/tmp/build/2026.08.29.16.32.45-amd64/destdir -I/tmp/build/2026.08.29.16.32.45-amd64/src/tests/lib/libc/sys/../../..  -c    /tmp/build/2026.08.29.16.32.45-amd64/src/tests/lib/libc/sys/t_kill.c -o t_kill.o.o
    --- dependall-sbin ---
    --- mount_lfs.o ---
    /tmp/build/2026.08.29.16.32.45-amd64/src/sbin/mount_lfs/mount_lfs.c: In function 'invoke_cleaner':
    /tmp/build/2026.08.29.16.32.45-amd64/src/sbin/mount_lfs/mount_lfs.c:321:9: error: implicit declaration of function 'unreachable' [-Wimplicit-function-declaration]
      321 |         unreachable();
          |         ^~~~~~~~~~~
    --- dependall-tests ---
    --- dependall-crypto ---
    --- h_md5hmac ---

The following commits were made between the last successful build and
the first failed build:

    2026.08.29.16.32.45 riastradh src/sbin/mount_lfs/mount_lfs.c 1.42

Logs can be found at:

    http://releng.NetBSD.org/b5reports/amd64/commits-2026.08.html#2026.08.29.16.32.45