Index: libcio/scan.c
===================================================================
--- libcio/scan.c	(revision 897a8748f2677e6fbef5357d8ce6887b9d9c5a2d)
+++ libcio/scan.c	(revision 4d3e5a47d39eb0056a6aeb67479f419dfae3400d)
@@ -148,4 +148,5 @@
 			case 'D':
 				lflag = TRUE;
+				/* fall through */
 
 			case 'd':
@@ -157,4 +158,5 @@
 			case 'X':
 				lflag = TRUE;
+				/* fall through */
 
 			case 'x':
@@ -165,4 +167,5 @@
 			case 'O':
 				lflag = TRUE;
+				/* fall through */
 
 			case 'o':