--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
--- a/libutil/Utility.cpp
+++ b/libutil/Utility.cpp
@@ -493,7 +493,7 @@ 
         if( codes.find( code ) == codes.end() )
             continue;
 
-        switch( code ) {
+        switch( static_cast<unsigned>(code) ) {
             case 'z':
                 _optimize = true;
                 break;
--- a/util/mp4art.cpp
+++ b/util/mp4art.cpp
@@ -376,7 +376,7 @@ 
 {
     handled = true;
 
-    switch( code ) {
+    switch( static_cast<unsigned>(code) ) {
         case LC_ART_ANY:
             _artFilter = numeric_limits<uint32_t>::max();
             break;
--- a/util/mp4chaps.cpp
+++ b/util/mp4chaps.cpp
@@ -632,7 +632,7 @@ 
 {
     handled = true;
 
-    switch( code ) {
+    switch( static_cast<unsigned>(code) ) {
         case 'A':
         case LC_CHPT_ANY:
             _ChapterType = MP4ChapterTypeAny;
--- a/util/mp4file.cpp
+++ b/util/mp4file.cpp
@@ -189,7 +189,7 @@ 
 {
     handled = true;
 
-    switch( code ) {
+    switch( static_cast<unsigned>(code) ) {
         case LC_LIST:
             _action = &FileUtility::actionList;
             break;
--- a/util/mp4subtitle.cpp
+++ b/util/mp4subtitle.cpp
@@ -164,7 +164,7 @@ 
 {
     handled = true;
 
-    switch( code ) {
+    switch( static_cast<unsigned>(code) ) {
         case LC_LIST:
             _action = &SubtitleUtility::actionList;
             break;
--- a/util/mp4track.cpp
+++ b/util/mp4track.cpp
@@ -788,7 +788,7 @@ 
 {
     handled = true;
 
-    switch( code ) {
+    switch( static_cast<unsigned>(code) ) {
         case LC_TRACK_WILDCARD:
             _trackMode = TM_WILDCARD;
             break;