1 files changed, 8 insertions, 0 deletions
diff --git a/source/blender/blenkernel/BKE_node_ui_storage.hh b/source/blender/blenkernel/BKE_node_ui_storage.hh
index 5f9c039ef9e..8bf89cd8f58 100644
--- a/source/blender/blenkernel/BKE_node_ui_storage.hh
+++ b/source/blender/blenkernel/BKE_node_ui_storage.hh
@@ -95,8 +95,16 @@ struct AvailableAttributeInfo {
 };
 
 struct NodeUIStorage {
+  std::mutex mutex;
   blender::Vector<NodeWarning> warnings;
   blender::Set<AvailableAttributeInfo> attribute_hints;
+
+  NodeUIStorage() = default;
+  /* Needed because the mutex can't be moved or copied. */
+  NodeUIStorage(NodeUIStorage &&other)
+      : warnings(std::move(other.warnings)), attribute_hints(std::move(other.attribute_hints))
+  {
+  }
 };
 
 struct NodeTreeUIStorage {