fixed gnu warnings

src/ca/cac.cpp

@@ -137,7 +137,7 @@ cac::cac ( cacNotify & notifyIn, bool enablePreemptiveCallbackIn ) :
     programBeginTime ( epicsTime::getCurrent() ),
     connTMO ( CA_CONN_VERIFY_PERIOD ),
     cbMutex ( ! enablePreemptiveCallbackIn ),
-    globalServiceList ( globalServiceListCAC ),
+    globalServiceList ( globalServiceListCAC.getReference () ),
     timerQueue ( epicsTimerQueueActive::allocate ( false, 
         lowestPriorityLevelAbove(epicsThreadGetPrioritySelf()) ) ),
     pUserName ( 0 ),

src/ca/cacChannel.cpp

@@ -74,7 +74,7 @@ void cacChannel::hostName ( char *pBuf, unsigned bufLength ) const
 {
     if ( bufLength ) {
         epicsSingleton < localHostName >::reference 
-                ref ( localHostNameAtLoadTime );
+                ref ( localHostNameAtLoadTime.getReference () );
         ref->copy ( pBuf, bufLength );
     }
 }
@@ -84,7 +84,7 @@ void cacChannel::hostName ( char *pBuf, unsigned bufLength ) const
 const char * cacChannel::pHostName () const
 {
     epicsSingleton < localHostName >::reference 
-            ref ( localHostNameAtLoadTime );
+            ref ( localHostNameAtLoadTime.getReference () );
     return ref->pointer ();
 }
 

src/ca/tcpiiu.cpp

@@ -894,7 +894,7 @@ void tcpiiu::hostNameSetRequest ( epicsGuard < cacMutex > & )
     }
 
     epicsSingleton < localHostName >::reference 
-            ref ( localHostNameAtLoadTime );
+            ref ( localHostNameAtLoadTime.getReference () );
     const char * pName = ref->pointer ();
     unsigned size = strlen ( pName ) + 1u;
     unsigned postSize = CA_MESSAGE_ALIGN ( size );