From 51b367df53bc2f9a3f720cc062d997fb4eb89571 Mon Sep 17 00:00:00 2001
From: "Vicente J. Botet Escriba" <vicente.botet@wanadoo.fr>
Date: Sat, 29 Apr 2017 16:12:35 +0200
Subject: [PATCH] manage with 12958.

---
 include/boost/thread/concurrent_queues/sync_bounded_queue.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/boost/thread/concurrent_queues/sync_bounded_queue.hpp b/include/boost/thread/concurrent_queues/sync_bounded_queue.hpp
index e34fa56f..5dc4090c 100644
--- a/include/boost/thread/concurrent_queues/sync_bounded_queue.hpp
+++ b/include/boost/thread/concurrent_queues/sync_bounded_queue.hpp
@@ -484,7 +484,9 @@ namespace concurrent
   queue_op_status sync_bounded_queue<ValueType>::wait_pull_front(ValueType& elem, unique_lock<mutex>& lk)
   {
       if (empty(lk) && closed(lk)) {return queue_op_status::closed;}
-      wait_until_not_empty(lk);
+      bool is_closed = false;
+      wait_until_not_empty(lk, is_closed);
+      if (is_closed) {return queue_op_status::closed;}
       pull_front(elem, lk);
       return queue_op_status::success;
   }