# -Xx,fifos does not attach fifo to numbered dsmark classes -------------------
tcc -xif:err -Xx,all -Xx,fifos 2>&1 | grep -v '^#'
dsmark {
    class (1);
}
EOF
block eth0 egress
qdisc 2 = fifo
qdisc 1 = dsmark indices 2
class 0 = qdisc 2
class 1 =
action 0 = unspec
match action 0
# -u yields distinct result for variables containing expressions --------------
tcc -c -u stderr -w 2>&1
$foo = raw[0] == 2;
EOF
$foo = expression
# child process does not execute exit handler ---------------------------------
tcc -xif:nosuchthing 2>&1
EOF
ERROR
tcc-ext-nosuchthing: No such file or directory
external program "nosuchthing" exited with status 1 on configuration query
