./test_comm_split fails: Floating-point exception - erroneous arithmetic operation

[yurivict]

cd /disk-samsung/freebsd-ports/net/mpifx/work/.build/test && ./test_comm_split

Program received signal SIGFPE: Floating-point exception - erroneous arithmetic operation.

Backtrace for this error:
#0  0x800e1f6db in ???
#1  0x800e1e896 in ???
#2  0x800d1de5f in handle_signal
	at /disk-samsung/freebsd-src/lib/libthr/thread/thr_sig.c:303
#3  0x800d1d42e in thr_sighandler
	at /disk-samsung/freebsd-src/lib/libthr/thread/thr_sig.c:246
#4  0x7ffffffff002 in ???
#5  0x400eaa in ???
#6  0x400a5c in ???
#7  0x400b6f in _start
	at /disk-samsung/freebsd-src/lib/csu/amd64/crt1_c.c:75
*** Signal 8

Version: 1.2
OS: FreeBSD 13