diff --git a/include/rtti/typeinfo.h b/include/rtti/typeinfo.h
index ecf7304..467d4d0 100644
--- a/include/rtti/typeinfo.h
+++ b/include/rtti/typeinfo.h
@@ -98,7 +98,7 @@ typedef struct {
     var         data;
 } iterator_t;
 
-typedef int (*iter_make_fn_t)(iterator_t*);
+typedef int (*iter_make_fn_t)(iterator_t*, va_list);
 typedef int (*iter_next_fn_t)(iterator_t*, void**);
 typedef int (*iter_reset_fn_t)(iterator_t*);
 typedef void (*iter_destroy_fn_t)(iterator_t*);
@@ -165,7 +165,7 @@ extern int     is_rtti_obj(var);
 extern int     lock(var, uint64_t);
 extern void    unlock(var);
 extern char*   toString(var, ...);
-extern int     iter_make(iterator_t*, var);
+extern int     iter_make(iterator_t*, var,...);
 extern int     iter_next(iterator_t*, void**);
 extern int     iter_reset(iterator_t*);
 extern void    iter_destroy(iterator_t*);
diff --git a/src/create.c b/src/create.c
index 8475435..52c1bc8 100644
--- a/src/create.c
+++ b/src/create.c
@@ -82,6 +82,11 @@ void destroy(var v)
     return;
 }
 
+/* disable address sanitize as it's a possible case that calculated address of
+ * obj may not be valid */
+#if defined(__GNUC__)
+__attribute__((no_sanitize("address")))
+#endif
 int is_rtti_obj(var v)
 {
     meta_obj_t* obj = NULL;
diff --git a/src/iter.c b/src/iter.c
index 2a5b69b..b39bfb6 100644
--- a/src/iter.c
+++ b/src/iter.c
@@ -4,10 +4,12 @@
 
 #include "rtti.h"
 
-int iter_make(iterator_t* it, var v)
+int iter_make(iterator_t* it, var v, ...)
 {
     meta_obj_t*    obj    = NULL;
     iter_make_fn_t method = NULL;
+    va_list        ap;
+    int            rc = 0;
 
     if (it == NULL) {
         return -EINVAL;
@@ -23,10 +25,14 @@ int iter_make(iterator_t* it, var v)
         return -EINVAL;
     }
 
+    va_start(ap, v);
     memset(it, 0x0, sizeof(*it));
     it->obj = obj;
 
-    return method(it);
+    rc = method(it, ap);
+    va_end(ap);
+
+    return rc;
 }
 
 int iter_next(iterator_t* it, void** data)
diff --git a/testsuite/test_iter.c b/testsuite/test_iter.c
index f754403..c12f2f4 100644
--- a/testsuite/test_iter.c
+++ b/testsuite/test_iter.c
@@ -44,7 +44,7 @@ static void my_array_destroy(meta_obj_t* obj)
     }
 }
 
-static int my_array_make_iter(iterator_t* iter)
+static int my_array_make_iter(iterator_t* iter, va_list ap)
 {
     iter->data = (void*)(long)0;