# != works for 128 bit values -------------------------------------------------
tcc -xif:err 2>&1 | grep match
egress {
    drop if raw.ipv6 != 1::;
}
EOF
match 0:0:128=0x00010000000000000000000000000000 action 1
match action 0
# "c" targets does detect invalid field root ----------------------------------
tcc -tc 2>&1 >/dev/null
field foo = field_root(1234);

egress {
    class (<>) if foo == 0;
}
EOF
ERROR
"c" only supports field roots 0 and 1
