--- libaitio/inc/aitio.h	2012/07/31 15:02:34	1.22.2.12
+++ libaitio/inc/aitio.h	2012/07/31 16:04:52	1.22.2.15
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: aitio.h,v 1.22.2.12 2012/07/31 15:02:34 misho Exp $
+* $Id: aitio.h,v 1.22.2.15 2012/07/31 16:04:52 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -180,12 +180,12 @@ typedef struct {
 #define AIT_GET_F32(_vl)		(assert(AIT_TYPE((_vl)) == f32), (_vl)->val.f32)
 #define AIT_GET_F64(_vl)		(assert(AIT_TYPE((_vl)) == f64), (_vl)->val.f64)
 
-#define AIT_SET_DATA(_vl, _p, _len)	do { ait_val_t *__val = (_vl); \
-						__val = io_realloc(__val, sizeof(ait_val_t) + _len); \
+#define AIT_SET_DATA(_vl, _p, _len)	do { ait_val_t *__val = io_realloc((_vl), (sizeof(ait_val_t) + _len)); \
 						if (__val) { \
 							__val->val_type = data; AIT_LEN(__val) = _len; \
-							if ((_p)) \
+							if ((_p)) { \
 								memcpy(__val->val_data, (_p), _len); \
+							} \
 							(_vl) = __val; \
 						} \
 					} while (0);
@@ -214,7 +214,7 @@ typedef struct {
 						} } while (0)
 #define AIT_SET_STR(_vl, _v)		do { ait_val_t *__val = (_vl); assert(__val); \
 						__val->val_type = string; \
-						if ((_v)) { \
+						if ((_v) && *(_v)) { \
 							__val->val.string = (int8_t*) io_strdup((_v)); \
 							AIT_LEN(__val) = strlen((const char*) \
 									__val->val.string) + 1; \
@@ -523,6 +523,15 @@ inline ait_val_t *io_allocVar(void);
  * return: none
  */
 inline void io_freeVar(ait_val_t ** __restrict val);
+/*
+ * io_makeVar() - Allocate memory and fill variable
+ *
+ * @type = type of variable
+ * @... = arg1 is value of variable
+ * @... = arg2 is length of variabla. Not required for numbers and strings!
+ * return: NULL error or new variable, after use free variable with io_freeVar()
+ */
+ait_val_t *io_makeVar(ait_type_t type, ...);
 /*
  * io_allocVars() - Allocate ait_val_t array
  *