An error result from gethostbyname_r is signalled by either a non-zero return

value, or the result pointer not being set to point to the result buffer.

--- krb5-1.3.5/src/include/fake-addrinfo.h	2004-09-02 18:59:42.000000000 -0400

+++ krb5-1.3.5/src/include/fake-addrinfo.h	2004-11-01 19:17:30.127252336 -0500

@@ -187,24 +187,27 @@ extern /*@dependent@*/ char *gai_strerro

 #ifdef GETHOSTBYNAME_R_RETURNS_INT

 #define GET_HOST_BY_NAME(NAME, HP, ERR) \

     {									\

-	struct hostent my_h_ent, *my_hp;				\

-	int my_h_err;							\

+	struct hostent my_h_ent, *my_hp = NULL;				\

+	int my_h_err, my_ret;						\

 	char my_h_buf[8192];						\

-	(HP) = (gethostbyname_r((NAME), &my_h_ent,			\

-				my_h_buf, sizeof (my_h_buf), &my_hp,	\

-				&my_h_err)				\

+	my_ret = (gethostbyname_r((NAME), &my_h_ent,			\

+				  my_h_buf, sizeof (my_h_buf), &my_hp,	\

+				  &my_h_err));				\

+	(HP) = (((my_ret != 0) || (my_hp != &my_h_ent))			\

 		? 0							\

 		: &my_h_ent);						\

 	(ERR) = my_h_err;						\

     }

 #define GET_HOST_BY_ADDR(ADDR, ADDRLEN, FAMILY, HP, ERR) \

     {									\

-	struct hostent my_h_ent, *my_hp;				\

-	int my_h_err;							\

+	struct hostent my_h_ent, *my_hp = NULL;				\

+	int my_h_err, my_ret;						\

 	char my_h_buf[8192];						\

-	(HP) = (gethostbyaddr_r((ADDR), (ADDRLEN), (FAMILY), &my_h_ent,	\

-				my_h_buf, sizeof (my_h_buf), &my_hp,	\

-				&my_h_err)				\

+	my_ret = (gethostbyaddr_r((ADDR), (ADDRLEN), (FAMILY),		\

+				  &my_h_ent,				\

+				  my_h_buf, sizeof (my_h_buf), &my_hp,	\

+				  &my_h_err));				\

+	(HP) = (((my_ret != 0) || (my_hp != &my_h_ent))			\

 		? 0							\

 		: &my_h_ent);						\

 	(ERR) = my_h_err;						\