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-rw-r--r--src/pair.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/pair.cpp b/src/pair.cpp
index 31524de..3872b28 100644
--- a/src/pair.cpp
+++ b/src/pair.cpp
@@ -115,6 +115,9 @@ int zmq::pair_t::xrecv (zmq_msg_t *msg_, int flags_)
zmq_msg_close (msg_);
if (!alive || !inpipe || !inpipe->read (msg_)) {
+ // No message is available. Initialise the output parameter
+ // to be a 0-byte message.
+ zmq_msg_init (msg_);
errno = EAGAIN;
return -1;
}