FreeBSD SCORPIO1.SEIBERCOM.NET 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r296485: Tue Mar  8 07:04:36 UTC 2016     root@releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64

ClamAV 0.99.1/21467/Fri Mar 18 20:23:33 2016

After updating clamav, the following error messages was being displayed in the "freshclam.log" file:

freshclam daemon 0.99.1 (OS: freebsd11.0, ARCH: amd64, CPU: amd64)
ClamAV update process started at Sun Mar 20 07:26:06 2016
main.cvd is up to date (version: 57, sigs: 4218790, f-level: 60, builder: amishhammer)
daily.cld is up to date (version: 21467, sigs: 83892, f-level: 63, builder: amishhammer)
safebrowsing.cvd is up to date (version: 44501, sigs: 1935466, f-level: 63, builder: google)
Downloading bytecode.cvd [100%]
ERROR: Database load killed by signal 11
ERROR: Failed to load new database
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Update process terminated
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I then reconfigured "clamav" and turned off "LLVM". It is on by default

LLVM=off: Enable JIT Bytecode compiler (bundled LLVM)

I rebuilt the port and restarted the system. This is now the output in "freshclam.log"

freshclam daemon 0.99.1 (OS: freebsd11.0, ARCH: amd64, CPU: amd64)
ClamAV update process started at Sun Mar 20 07:34:12 2016
main.cvd is up to date (version: 57, sigs: 4218790, f-level: 60, builder: amishhammer)
daily.cld is up to date (version: 21467, sigs: 83892, f-level: 63, builder: amishhammer)
safebrowsing.cvd is up to date (version: 44501, sigs: 1935466, f-level: 63, builder: google)
Downloading bytecode.cvd [100%]
bytecode.cvd updated (version: 275, sigs: 45, f-level: 63, builder: amishhammer)
Database updated (6238193 signatures) from db.US.clamav.net (IP: 207.57.106.31)
Clamd successfully notified about the update.
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Either the problem with the bundled LLVM should be corrected, or the option should be "OFF" by default, with a warning about the consequences if it is enabled.