(otf_check_features): Check the return value of

pango_ot_info_find_language.  Check info before accessing
info->ruleset.

diff --git a/m17n-fc.c b/m17n-fc.c
index c6a24aa..9989d18 100644 (file)
--- a/m17n-fc.c
+++ b/m17n-fc.c
@@ -212,10 +212,14 @@ otf_check_features (PangoOTInfo *ot_info, PangoOTTableType type,
   langsys_tag = spec->langsys;
   if (! langsys_tag)
     langsys_tag = PANGO_OT_DEFAULT_LANGUAGE;
-  pango_ot_info_find_language (ot_info, type, script_idx,
-                              langsys_tag, &langsys_idx, &index);
+  if (! pango_ot_info_find_language (ot_info, type, script_idx,
+                                    langsys_tag, &langsys_idx, &index))
+    {
+      langsys_idx = PANGO_OT_DEFAULT_LANGUAGE;
+      index = 0xFFFF;
+    }
 
-  if (index != 0xFFFF)
+  if (info && index != 0xFFFF)
     {
       info->ruleset[for_gpos] = pango_ot_ruleset_new (ot_info);
       pango_ot_ruleset_add_feature (info->ruleset[for_gpos], type,