aarch64(?) poudiere-devel based builds seem to get fairly-rare corrupted files after recent system update(s?)

I updated from (shown a system that I've not updated yet):

# uname -apKU
FreeBSD CA72_4c8G_ZFS 14.0-CURRENT FreeBSD 14.0-CURRENT #18 main-n250455-890cae197737-dirty: Thu Nov  4 13:43:17 PDT 2021     root@CA72_16Gp_ZFS:/usr/obj/BUILDs/main-CA72-nodbg-clang/usr/main-src/arm64.aarch64/sys/GENERIC-NODBG-CA72  arm64 aarch64 
1400040 1400040

to:

# uname -apKU
FreeBSD CA72_16Gp_ZFS 14.0-CURRENT FreeBSD 14.0-CURRENT #19 main-n250667-20aa359773be-dirty: Sun Nov 14 02:57:32 PST 2021     root@CA72_16Gp_ZFS:/usr/obj/BUILDs/main-CA72-nodbg-clang/usr/main-src/arm64.aarch64/sys/GENERIC-NODBG-CA72  arm64 aarch64 1400042 1400042

and then updated /usr/ports/ and started poudriere-devel based builds of
the ports I's set up to use. However my last round of port builds from
a general update of /usr/ports/ were on 2021-10-23 before either of the
above.

I've had at least two files that seem to be corrupted, where a later part
of the build hits problematical file(s) from earlier build activity. For
example:

/usr/local/include/X11/extensions/XvMC.h:1:1: warning: null character ignored [-Wnull-character]
<U+0000> 
^
/usr/local/include/X11/extensions/XvMC.h:1:2: warning: null character ignored [-Wnull-character]
<U+0000><U+0000>
        ^
/usr/local/include/X11/extensions/XvMC.h:1:3: warning: null character ignored [-Wnull-character]
<U+0000><U+0000><U+0000> 
                ^   
/usr/local/include/X11/extensions/XvMC.h:1:4: warning: null character ignored [-Wnull-character]
<U+0000><U+0000><U+0000><U+0000>
                        ^
. . .

Removing the xorgproto-2021.4 package and rebuilding via
poudiere-devel did not get a failure of any ports dependent
on it.

This was from a use of:

# poudriere jail -j13_0R-CA7 -i
Jail name:         13_0R-CA7
Jail version:      13.0-RELEASE-p5
Jail arch:         arm.armv7
Jail method:       null
Jail mount:        /usr/obj/DESTDIRs/13_0R-CA7-poud
Jail fs:           
Jail updated:      2021-11-04 01:48:49
Jail pkgbase:      disabled

but another not-investigated example was from:

# poudriere jail -j13_0R-CA72 -i
Jail name:         13_0R-CA72
Jail version:      13.0-RELEASE-p5
Jail arch:         arm64.aarch64
Jail method:       null
Jail mount:        /usr/obj/DESTDIRs/13_0R-CA72-poud
Jail fs:           
Jail updated:      2021-11-04 01:48:01
Jail pkgbase:      disabled

(so no 32-bit COMPAT involved). The apparent corruption
was in a different port (autoconfig, noticed by the
build of automake failing via config reporting
/usr/local/share/autoconf-2.69/autoconf/autoconf.m4f
being rejected).

/usr/obj/DESTDIRs/13_0R-CA7-poud/ and
/usr/obj/DESTDIRs/13_0R-CA72-poud/ and the like track the
system versions.

The media is an Optane 960 in the PCIe slot of a HoneyComb
(16 Cortex-A72's). The context is a root on ZFS one, ZFS
used in order to have bectl, not redundancy.

The ThreadRipper 1950X (so amd64) port builds did not give
evidence of such problems based on the updated system. (Also
Optane media in a PCIe slot, also root on ZFS.) But the
errors seem rare enough to not be able to conclude much.

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)