diff --git a/xorriso/sfile.h b/xorriso/sfile.h
index 67a71e14..a3bbfd0e 100644
--- a/xorriso/sfile.h
+++ b/xorriso/sfile.h
@@ -16,6 +16,20 @@
 #define Smem_malloC malloc
 #define Smem_freE free
 
+#define Xorriso_alloc_meM(pt,typ,anz) { \
+  pt= (typ *) calloc(1, (anz)*sizeof(typ)); \
+  if(pt == NULL) { \
+    Xorriso_no_malloc_memory(xorriso, NULL, 0); \
+    ret= -1; \
+    goto ex; \
+  } }
+
+#define Xorriso_free_meM(pt) { \
+  if(pt != NULL) \
+    free(pt); \
+  }
+
+
 #define SfileadrL 4096
 
 
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 1d33e267..ca789513 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2011.05.06.120834"
+#define Xorriso_timestamP "2011.05.06.121218"