diff --git a/src/ca/comQueSend.h b/src/ca/comQueSend.h
index c1be89440..808285e7a 100644
--- a/src/ca/comQueSend.h
+++ b/src/ca/comQueSend.h
@@ -145,7 +145,8 @@ private:
             return;
         }
         pComBuf = newComBuf ();
-        assert ( pComBuf->push ( val ) );
+        bool success = pComBuf->push ( val );
+        assert ( success );
         this->pushComBuf ( *pComBuf );
     }
 
diff --git a/src/ca/nciu.cpp b/src/ca/nciu.cpp
index be65d87d5..f61172808 100644
--- a/src/ca/nciu.cpp
+++ b/src/ca/nciu.cpp
@@ -79,8 +79,8 @@ void nciu::destroy (
     epicsGuard < epicsMutex > & guard )
 {    
     while ( baseNMIU * pNetIO = this->eventq.first () ) {
-        assert ( this->cacCtx.destroyIO ( 
-            guard, pNetIO->getId (), *this ) );
+        bool success = this->cacCtx.destroyIO ( guard, pNetIO->getId (), *this );
+        assert ( success );
     }
     
     // if the claim reply has not returned yet then we will issue
diff --git a/src/ca/repeater.cpp b/src/ca/repeater.cpp
index a8943b2f1..64016aed6 100644
--- a/src/ca/repeater.cpp
+++ b/src/ca/repeater.cpp
@@ -511,7 +511,10 @@ void ca_repeater ()
 
     pBuf = new char [MAX_UDP_RECV];
 
-    assert ( osiSockAttach() );
+    {
+        bool success = osiSockAttach();
+        assert ( success );
+    }
 
     port = envGetInetPortConfigParam ( & EPICS_CA_REPEATER_PORT,
                                        static_cast <unsigned short> (CA_REPEATER_PORT) );