Index: rocs/impl/str.c
--- rocs/impl/str.c.orig
+++ rocs/impl/str.c
@@ -21,6 +21,7 @@
 #include <string.h>
 #include <stdarg.h>
 #include <time.h>
+#include <ctype.h>
 
 #include "rocs/public/str.h"
 #include "rocs/public/mem.h"
@@ -520,7 +521,7 @@ static char* _createStampNoDotsID( RocsMemID id ) {
 }
 
 
-static char* _isoDate( long tt ) {
+static char* _isoDate( time_t tt ) {
   struct tm* t  = NULL;
 
   /* Alloc a string for the stamp; caller should freeup! */
@@ -536,7 +537,7 @@ static char* _isoDate( long tt ) {
   return s;
 }
 
-static char* _isoTime( long tt ) {
+static char* _isoTime( time_t tt ) {
   struct tm* t  = NULL;
 
   /* Alloc a string for the stamp; caller should freeup! */