LLVM build failures

As a Linux From Scratch user, I'm posting this here to cast a wider net. I have gcc version 11.2.0.
Attempting to run the built-in test, via "ninja check-all", I get an alarmingly high number of failures.
Quote:

Testing Time: 4181.46s Skipped : 74 Unsupported : 19419 Passed : 61541 Expectedly Failed: 166 Failed : 650

650 is quite high. All the while some unsual kernel message are being generated. Here is a sample.
Quote:

[ 4516.035716] kauditd_printk_skb: 236 callbacks suppressed [ 4516.035719] audit: type=1131 audit(1633282504.044:15979): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-coredump@5294-543421-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' [ 4516.126281] audit: type=1131 audit(1633282504.134:15980): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-coredump@5295-543448-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' [ 4516.135901] ScudoUnitTest-i[543518]: segfault at f7f4f000 ip 00000000080cf216 sp 00000000ffdd9090 error 6 in ScudoUnitTest-i386-Test[804d000+15a000] [ 4516.140597] Code: 00 88 85 0d ff ff ff e9 00 00 00 00 8a 85 0d ff ff ff a8 01 0f 85 05 00 00 00 e9 6d 01 00 00 e8 40 fa fa ff 8b 45 0c 8b 4d 10 <c6> 04 08 aa e9 59 01 00 00 89 45 e4 89 55 e0 8b 45 e0 b9 02 00 00 [ 4516.141374] traps: base-derived-de[543526] trap invalid opcode ip:400863 sp:7fff297bac40 error:0 in base-derived-destructor.cpp.tmp13[400000+1000] [ 4516.145302] audit: type=1701 audit(1633282504.153:15981): auid=4294967295 uid=1000 gid=1000 ses=4294967295 subj=kernel pid=543518 comm="ScudoUnitTest-i" exe="...llvm-13.0.0.src/build64/projects/compiler-rt/lib/scudo/standalone/tests/ScudoUnitTest-i386-Test" sig=11 res=1

I visited the llvm site, but I'm having trouble finding my way around there. Anyone know where I should properly place this bug report?