(chise_ccs_decode): Return -1 when argument `ccs' is NULL.

(chise_ccs_set_decoded_char): Likewise.

diff --git a/chise.c b/chise.c
index 43c60e7..b5ede8a 100644 (file)
--- a/chise.c
+++ b/chise.c
@@ -127,7 +127,7 @@ chise_ds_get_feature (CHISE_DS *ds, const unsigned char *feature)
   return ft;
 }
 
-CHISE_CCS_Table*
+CHISE_CCS
 chise_ds_get_ccs (CHISE_DS *ds, const unsigned char *ccs)
 {
   CHISE_CCS_Table* ct;
@@ -391,6 +391,9 @@ chise_ccs_decode (CHISE_CCS ccs, int code_point)
   int status = 0;
   char key_buf[16];
 
+  if (ccs == NULL)
+    return -1;
+
   if (ccs->db == NULL)
     {
       CHISE_DS *ds = ccs->ds;
@@ -423,6 +426,9 @@ chise_ccs_set_decoded_char (CHISE_CCS ccs,
 {
   char key_buf[16], val_buf[8];
 
+  if (ccs == NULL)
+    return -1;
+
   if ((ccs->access & DB_CREATE) == 0)
     {
       if (ccs->db != NULL)