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-rw-r--r--src/ctx.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/ctx.cpp b/src/ctx.cpp
index 858d91e..91b0236 100644
--- a/src/ctx.cpp
+++ b/src/ctx.cpp
@@ -49,8 +49,8 @@ zmq::ctx_t::ctx_t (uint32_t io_threads_) :
HIBYTE (wsa_data.wVersion) == 2);
#endif
- // Initialise the array of mailboxes.
- slot_count = max_sockets + io_threads_;
+ // Initialise the array of mailboxes. +1 accounts for internal log socket.
+ slot_count = max_sockets + io_threads_ + 1;
slots = (mailbox_t**) malloc (sizeof (mailbox_t*) * slot_count);
zmq_assert (slots);