From 4bc232c175859ce0d5773bc3d6749c8bb8a7eb1b Mon Sep 17 00:00:00 2001
From: Gudmundur Adalsteinsson <ofpgummi@yahoo.com>
Date: Sat, 26 Oct 2019 12:31:51 +0000
Subject: [PATCH] Problem: recv return value should not be ignored

Solution: add nodiscard attribute to recv functions
---
 zmq.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/zmq.hpp b/zmq.hpp
index f4a3d70c..476b03cb 100644
--- a/zmq.hpp
+++ b/zmq.hpp
@@ -1348,7 +1348,7 @@ class socket_base
     }
 
 #ifdef ZMQ_CPP11
-    detail::recv_buffer_result_t recv(mutable_buffer buf,
+    ZMQ_NODISCARD detail::recv_buffer_result_t recv(mutable_buffer buf,
                                       recv_flags flags = recv_flags::none)
     {
         const int nbytes =
@@ -1362,7 +1362,7 @@ class socket_base
         throw error_t();
     }
 
-    detail::recv_result_t recv(message_t &msg, recv_flags flags = recv_flags::none)
+    ZMQ_NODISCARD detail::recv_result_t recv(message_t &msg, recv_flags flags = recv_flags::none)
     {
         const int nbytes = zmq_msg_recv(msg.handle(), _handle, static_cast<int>(flags));
         if (nbytes >= 0) {