cyclegraph: add const

[model-checker.git] / cyclegraph.cc

diff --git a/cyclegraph.cc b/cyclegraph.cc
index 3949b6ec86d885056282a0b84d0975267da13cdd..e3d0d8366694d53c44170ba589062df01d179aa0 100644 (file)
--- a/cyclegraph.cc
+++ b/cyclegraph.cc
@@ -6,7 +6,7 @@
 
 /** Initializes a CycleGraph object. */
 CycleGraph::CycleGraph() :
-       discovered(new HashTable<CycleNode *, CycleNode *, uintptr_t, 4, model_malloc, model_calloc, model_free>(16)),
+       discovered(new HashTable<const CycleNode *, const CycleNode *, uintptr_t, 4, model_malloc, model_calloc, model_free>(16)),
        hasCycles(false),
        oldCycles(false),
        hasRMWViolation(false),
@@ -198,15 +198,15 @@ bool CycleGraph::checkReachable(const ModelAction *from, const ModelAction *to)
  * @param to The CycleNode to reach
  * @return True, @a from can reach @a to; otherwise, false
  */
-bool CycleGraph::checkReachable(CycleNode *from, CycleNode *to) const
+bool CycleGraph::checkReachable(const CycleNode *from, const CycleNode *to) const
 {
-       std::vector< CycleNode *, ModelAlloc<CycleNode *> > queue;
+       std::vector< const CycleNode *, ModelAlloc<const CycleNode *> > queue;
        discovered->reset();
 
        queue.push_back(from);
        discovered->put(from, from);
        while (!queue.empty()) {
-               CycleNode *node = queue.back();
+               const CycleNode *node = queue.back();
                queue.pop_back();
                if (node == to)
                        return true;