diff -up adns-1.4/src/general.c.rh514838 adns-1.4/src/general.c

--- adns-1.4/src/general.c.rh514838	2006-04-08 16:36:57.000000000 +0200

+++ adns-1.4/src/general.c	2009-08-06 13:55:06.752562767 +0200

@@ -267,6 +267,8 @@ static const struct sinfo {

   SINFO( nodata,              "No such data"                                 )

 };

+static const char *unknown_error_str = "unknown error code";

+

 static int si_compar(const void *key, const void *elem) {

   const adns_status *st= key;

   const struct sinfo *si= elem;

@@ -283,7 +285,7 @@ const char *adns_strerror(adns_status st

   const struct sinfo *si;

   si= findsinfo(st);

-  return si->string;

+  return (si == NULL) ? unknown_error_str : si->string;

 }

 const char *adns_errabbrev(adns_status st) {