adns_str* etc.: Return NULL rather than crashing, and docs

[adns.git] / src / general.c

diff --git a/src/general.c b/src/general.c
index e2ab3bc1854a155f2c83d41967f1e8e8194e5ccf..cfe07bddbb5653b349d1f73c477e8ef72c174bd7 100644 (file)
--- a/src/general.c
+++ b/src/general.c
@@ -288,14 +288,14 @@ const char *adns_strerror(adns_status st) {
   const struct sinfo *si;
 
   si= findsinfo(st);
-  return si->string;
+  return si ? si->string : 0;
 }
 
 const char *adns_errabbrev(adns_status st) {
   const struct sinfo *si;
 
   si= findsinfo(st);
-  return si->abbrev;
+  return si ? si->abbrev : 0;
 }
 
 
@@ -332,7 +332,7 @@ const char *adns_errtypeabbrev(adns_status st) {
 
   sti= bsearch(&st,stinfos, sizeof(stinfos)/sizeof(*stinfos),
               sizeof(*stinfos), sti_compar);
-  return sti->abbrev;
+  return sti ? sti->abbrev : 0;
 }