class Semaphore;
/** Smart pointer to a simgrid::s4u::Semaphore */
using SemaphorePtr = boost::intrusive_ptr<Semaphore>;
-XBT_PUBLIC void intrusive_ptr_release(Semaphore* m);
-XBT_PUBLIC void intrusive_ptr_add_ref(Semaphore* m);
+XBT_PUBLIC void intrusive_ptr_release(const Semaphore* m);
+XBT_PUBLIC void intrusive_ptr_add_ref(const Semaphore* m);
class Disk;
} // namespace s4u
