Index: wpa_supplicant-2.10/src/utils/os.h
===================================================================
--- wpa_supplicant-2.10.orig/src/utils/os.h
+++ wpa_supplicant-2.10/src/utils/os.h
@@ -260,7 +260,7 @@ int os_fdatasync(FILE *stream);
  *
  * Caller is responsible for freeing the returned buffer with os_free().
  */
-void * os_zalloc(size_t size);
+void * os_zalloc(size_t size) __attribute((malloc, alloc_size(1)));
 
 /**
  * os_calloc - Allocate and zero memory for an array
@@ -274,6 +274,8 @@ void * os_zalloc(size_t size);
  *
  * Caller is responsible for freeing the returned buffer with os_free().
  */
+
+__attribute((malloc, alloc_size(1,2)))
 static inline void * os_calloc(size_t nmemb, size_t size)
 {
 	if (size && nmemb > (~(size_t) 0) / size)