Index: src/libcfa/concurrency/alarm.h
===================================================================
--- src/libcfa/concurrency/alarm.h	(revision 6b0b624129f6017f7706b516a24a52e382e3a334)
+++ src/libcfa/concurrency/alarm.h	(revision 7bc4e6bfac3fb788dc7964c508880c9d8c802484)
@@ -36,10 +36,10 @@
 
 // ctors
-void ?{}( __cfa_time_t * this );
-void ?{}( __cfa_time_t * this, zero_t zero );
-void ?{}( __cfa_time_t * this, timespec * curr );
-void ?{}( itimerval * this, __cfa_time_t * alarm );
+void ?{}( __cfa_time_t & this );
+void ?{}( __cfa_time_t & this, zero_t zero );
+void ?{}( __cfa_time_t & this, timespec * curr );
+void ?{}( itimerval & this, __cfa_time_t * alarm );
 
-__cfa_time_t ?=?( __cfa_time_t * this, zero_t rhs );
+__cfa_time_t ?=?( __cfa_time_t & this, zero_t rhs );
 
 // logical ops
@@ -105,7 +105,7 @@
 typedef alarm_node_t ** __alarm_it_t;
 
-void ?{}( alarm_node_t * this, thread_desc * thrd, __cfa_time_t alarm = zero_time, __cfa_time_t period = zero_time );
-void ?{}( alarm_node_t * this, processor   * proc, __cfa_time_t alarm = zero_time, __cfa_time_t period = zero_time );
-void ^?{}( alarm_node_t * this );
+void ?{}( alarm_node_t & this, thread_desc * thrd, __cfa_time_t alarm = zero_time, __cfa_time_t period = zero_time );
+void ?{}( alarm_node_t & this, processor   * proc, __cfa_time_t alarm = zero_time, __cfa_time_t period = zero_time );
+void ^?{}( alarm_node_t & this );
 
 struct alarm_list_t {
@@ -114,7 +114,7 @@
 };
 
-static inline void ?{}( alarm_list_t * this ) {
-	this->head = 0;
-	this->tail = &this->head;
+static inline void ?{}( alarm_list_t & this ) {
+	this.head = 0;
+	this.tail = &this.head;
 }