nodestack: add const

[model-checker.git] / nodestack.cc

diff --git a/nodestack.cc b/nodestack.cc
index 11b83cc1b341145c1ed1faf130afa4bf9ae28d8b..2f99aef24639a9cf128f5083362596aaf0c374e5 100644 (file)
--- a/nodestack.cc
+++ b/nodestack.cc
@@ -386,7 +386,8 @@ int Node::get_read_from_size() const
        return may_read_from.size();
 }
 
-const ModelAction * Node::get_read_from_at(int i) {
+const ModelAction * Node::get_read_from_at(int i) const
+{
        return may_read_from[i];
 }