--- yp-tools-yp-tools-4.2.2/src/yppasswd.c.strict-protorypes	2017-02-21 15:51:03.452034055 +0100

+++ yp-tools-yp-tools-4.2.2/src/yppasswd.c	2017-02-21 15:51:14.996030455 +0100

@@ -547,7 +547,7 @@ create_random_salt (char *salt, int num_

  * If other value is set or it is not set at all, SHA-512 is used.

  */ 

 static int

-get_env_hash_id()

+get_env_hash_id(void)

 {

   const char *v = getenv("YP_PASSWD_HASH");

   if (!v)