diff --git a/src/db/dbChannelIO.cpp b/src/db/dbChannelIO.cpp
index 10ebc9558..bd01f7e49 100644
--- a/src/db/dbChannelIO.cpp
+++ b/src/db/dbChannelIO.cpp
@@ -196,7 +196,7 @@ void dbChannelIO::show ( unsigned level ) const
 {
     this->lock ();
     printf ("channel at %p attached to local database record %s\n", 
-        this, this->addr.precord->name );
+        static_cast <const void *> ( this ), this->addr.precord->name );
 
     if ( level > 0u ) {
         printf ( "\ttype %s, element count %li, field at %p\n",
diff --git a/src/db/dbPutNotifyBlocker.cpp b/src/db/dbPutNotifyBlocker.cpp
index 0ef727652..d735c3e40 100644
--- a/src/db/dbPutNotifyBlocker.cpp
+++ b/src/db/dbPutNotifyBlocker.cpp
@@ -110,10 +110,13 @@ extern "C" void putNotifyCompletion ( putNotify *ppn )
 
 void dbPutNotifyBlocker::show ( unsigned level ) const
 {
-    printf ( "put notify blocker at %p\n", this );
+    printf ( "put notify blocker at %p\n", 
+        static_cast <const void *> ( this ) );
     if ( level > 0u ) {
-        printf ( "\tdbPutNotifyIO at %p\n", this->pPN );
-        printf ( "\tdbChannelIO at %p\n", &this->chan );
+        printf ( "\tdbPutNotifyIO at %p\n", 
+            static_cast <void *> ( this->pPN ) );
+        printf ( "\tdbChannelIO at %p\n", 
+            static_cast <void *> ( &this->chan ) );
     }
     if ( level > 1u ) {
         this->block.show ( level - 2u );
diff --git a/src/db/dbServiceIO.cpp b/src/db/dbServiceIO.cpp
index 6c43b7d09..f2fa2b32d 100644
--- a/src/db/dbServiceIO.cpp
+++ b/src/db/dbServiceIO.cpp
@@ -165,7 +165,8 @@ dbEventSubscription dbServiceIO::subscribe ( struct dbAddr &addr, dbSubscription
 void dbServiceIO::show ( unsigned level ) const
 {
     this->mutex.lock ();
-    printf ( "dbServiceIO at %p\n", this );
+    printf ( "dbServiceIO at %p\n", 
+        static_cast <const void *> ( this ) );
     if (level > 0u ) {
         printf ( "\tevent call back cache location %p, and its size %lu\n", 
             this->pEventCallbackCache, this->eventCallbackCacheSize );
diff --git a/src/db/dbSubscriptionIO.cpp b/src/db/dbSubscriptionIO.cpp
index c05c04869..aa2f81242 100644
--- a/src/db/dbSubscriptionIO.cpp
+++ b/src/db/dbSubscriptionIO.cpp
@@ -96,17 +96,19 @@ int dbSubscriptionIO::begin ( struct dbAddr &addr, unsigned mask )
 
 void dbSubscriptionIO::show ( unsigned level ) const
 {
-    printf ( "Data base subscription IO at %p\n", this );
+    printf ( "Data base subscription IO at %p\n", 
+        static_cast <const void *> ( this ) );
     if ( level > 0u ) {
         short tmpType;
         if ( this->type < SHRT_MAX ) {
             tmpType = static_cast < short > ( this->type );
             printf ( "\ttype %s, count %lu, channel at %p\n",
-                dbf_type_to_text ( tmpType ), this->count, &this->chan );
+                dbf_type_to_text ( tmpType ), this->count, 
+                static_cast <void *> ( &this->chan ) );
         }
         else {
-            printf ("strange type !, count %lu, channel at %p\n",
-                this->count, &this->chan );
+            printf ( "strange type !, count %lu, channel at %p\n",
+                this->count, static_cast <void *> ( &this->chan ) );
         }
     }
 }
diff --git a/src/gdd/gddAppFuncTable.h b/src/gdd/gddAppFuncTable.h
index 75e96fe47..9ba8438e1 100644
--- a/src/gdd/gddAppFuncTable.h
+++ b/src/gdd/gddAppFuncTable.h
@@ -317,7 +317,7 @@ gddAppFuncTableStatus gddAppFuncTable<PV>::callReadFunc (PV &pv, gdd &value)
         return S_gddAppFuncTable_badType;
     }
     pFunc = this->pMFuncRead[type];
-    if (pFunc==NULL) {
+    if ( ! pFunc ) {
         errPrintf (S_gddAppFuncTable_badType, __FILE__,
             __LINE__, "- ukn appl type code = %u\n", 
             type);