Index: libcfa/src/iostream.hfa
===================================================================
--- libcfa/src/iostream.hfa	(revision ffaedcdb2f53c8f96bbbced84a2f7337c7855208)
+++ libcfa/src/iostream.hfa	(revision a300e4a85b7745f590bfbef5fc5182df7a469c97)
@@ -10,6 +10,6 @@
 // Created On       : Wed May 27 17:56:53 2015
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Sat Apr 20 12:04:07 2019
-// Update Count     : 226
+// Last Modified On : Fri May  3 22:55:04 2019
+// Update Count     : 230
 //
 
@@ -48,5 +48,5 @@
 	void close( ostype & os );
 	ostype & write( ostype &, const char *, size_t );
-	int fmt( ostype &, const char format[], ... );
+	int fmt( ostype &, const char format[], ... ) __attribute__(( format(printf, 2, 3) ));
 }; // ostream
 
@@ -158,5 +158,5 @@
 	istype & read( istype &, char *, size_t );
 	istype & ungetc( istype &, char );
-	int fmt( istype &, const char format[], ... );
+	int fmt( istype &, const char format[], ... ) __attribute__(( format(scanf, 2, 3) ));
 }; // istream