simgrid::mc::ObjectInformation* result);
XBT_PRIVATE
-bool snapshot_equal(Snapshot* s1, Snapshot* s2);
+bool snapshot_equal(const Snapshot* s1, const Snapshot* s2);
// Move is somewhere else (in the LivenessChecker class, in the Session class?):
extern XBT_PRIVATE xbt_automaton_t property_automaton;