Merge GH #1245 Restructure Barrier/Semaphore to avoid signed overflow warnings

1 files changed, 3 insertions, 2 deletions

diff --git a/src/lib/utils/barrier.cpp b/src/lib/utils/barrier.cpp
index 3c721d905..ed3878d18 100644
--- a/src/lib/utils/barrier.cpp
+++ b/src/lib/utils/barrier.cpp
@@ -20,9 +20,10 @@ void Barrier::wait(size_t delta)
 void Barrier::sync()
     {
     std::unique_lock<mutex_type> lock(m_mutex);
-    --m_value;
-    if(m_value > 0)
+    
+    if(m_value > 1)
         {
+        --m_value;
         const size_t current_syncs = m_syncs;
         m_cond.wait(lock, [this, &current_syncs] { return m_syncs != current_syncs; });
         }