In article <Pine.NEB.4.64.1511181312100.17964%vps1.whooppee.com@localhost>,
Paul Goyette <paul%whooppee.com@localhost> wrote:
SYNOPSIS says
ssize_t
mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len,
unsigned *msg_prio);
RETURN VALUES says
Upon successful completion, the mq_receive() and mq_timedreceive()
functions return a value of zero. ...
Seems to me that if mq_receive() returns a ssize_t, then it should be
returning the size of the received message?
Yes, our man page is incorrect:
http://pubs.opengroup.org/onlinepubs/009695399/functions/mq_receive.html