Does not fail, if it cannot parse the -a argument
Copied from debian bugtracker https://bugs.debian.org/912719:
$ torsocks -a "foo" curl -L -s https://deb.debian.org/debian/dists/stable/Release | grep Origin
1541235000 ERROR torsocks[4883]: Config file unknown tor address: foo (in conf_file_set_tor_address() at config-file.c:281)
Origin: Debian
Since torsocks could not parse -a, it just used the tor on 127.0.0.1:9050. I would expect it to fail closed instead.