[...]

hink this is the case or
==1943==    you are not sure, please let us know and we'll try to fix it.
==1943== Either way, Valgrind will now raise a SIGILL signal which will
==1943== probably kill your program.
==1943== 
==1943== Process terminating with default action of signal 4 (SIGILL)
==1943==  Illegal opcode at address 0x4401DED
==1943==    at 0x4401DED: (within /lib/ld-2.32.so)
Failed to run: ./test-lib
make[4]: *** [Makefile:3649: check-local] Error 1
make[4]: Leaving directory '/tmp/B.CdfVvn/BUILD/dovecot-2.3.17/src/lib'
make[3]: *** [Makefile:2995: check-am] Error 2
make[3]: Leaving directory '/tmp/B.CdfVvn/BUILD/dovecot-2.3.17/src/lib'
make[2]: *** [Makefile:2997: check] Error 2
make[2]: Leaving directory '/tmp/B.CdfVvn/BUILD/dovecot-2.3.17/src/lib'
make[1]: *** [Makefile:572: check-recursive] Error 1
make[1]: Leaving directory '/tmp/B.CdfVvn/BUILD/dovecot-2.3.17/src'
make: *** [Makefile:701: check-recursive] Error 1
error: Bad exit status from /tmp/B.CdfVvn/BUILD/tmp/rpm-tmp.1496 (%build)
RPM build errors:
    Bad exit status from /tmp/B.CdfVvn/BUILD/tmp/rpm-tmp.1496 (%build)
ended at: Thu Oct 28 19:22:24 2021, done in 0:04:17.110020
error: No files produced.
+ chmod -R u+rwX /tmp/B.CdfVvn/BUILD
+ rm -rf /tmp/B.CdfVvn/tmp /tmp/B.CdfVvn/BUILD
+ rm -rf /tmp/B.CdfVvn
Begin-TLD-Builder-Info
Build-Time: user:484.69s sys:137.77s real:258.59s (faults io:28 non-io:27322844)
End-TLD-Builder-Info