From 1f35b10df6ef1c22021faab519663394b7eb7e5e Mon Sep 17 00:00:00 2001
From: Artem Shumov <agshumov@sberautotech.ru>
Date: Tue, 25 Jan 2022 22:20:43 +0300
Subject: [PATCH] Add the debugging exception

---
 rmw_fastrtps_shared_cpp/src/types/guard_condition.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rmw_fastrtps_shared_cpp/src/types/guard_condition.hpp b/rmw_fastrtps_shared_cpp/src/types/guard_condition.hpp
index ab5076522..974571d25 100644
--- a/rmw_fastrtps_shared_cpp/src/types/guard_condition.hpp
+++ b/rmw_fastrtps_shared_cpp/src/types/guard_condition.hpp
@@ -53,6 +53,9 @@ class GuardCondition
   attachCondition(std::mutex * conditionMutex, std::condition_variable * conditionVariable)
   {
     std::lock_guard<std::mutex> lock(internalMutex_);
+    if (conditionMutex_ != nullptr) {
+      throw std::runtime_error("The guard condition had already been attached");
+    }
     conditionMutex_ = conditionMutex;
     conditionVariable_ = conditionVariable;
   }