annotate `isc_random_buf` with the gcc access attribute

diff --git a/lib/isc/include/isc/random.h b/lib/isc/include/isc/random.h
index 757a6486a8825fb08b68d09b6c2725038557b76e..07086cc8c347763b44e7812f18e0580df62bb04e 100644 (file)
--- a/lib/isc/include/isc/random.h
+++ b/lib/isc/include/isc/random.h
@@ -16,6 +16,7 @@
 #include <inttypes.h>
 #include <stdlib.h>
 
+#include <isc/attributes.h>
 #include <isc/types.h>
 
 /*! \file isc/random.h
@@ -36,6 +37,7 @@ isc_random32(void);
  * \brief Returns a single 32-bit random value.
  */
 
+ISC_ATTR_ACCESS(write_only, 1, 2)
 void
 isc_random_buf(void *buf, size_t buflen);
 /*!<