re PR ipa/69589 (ICE in initialize_node_lattices, at ipa-cp.c:971)

	PR lto/69589
	* tree.c (free_lang_data_in_decl): Clear visibility of TYPE_DECL.

From-SVN: r234113

gcc/ChangeLog

 2016-03-10  Jan Hubicka  <hubicka@ucw.cz>
 
 	PR lto/69589
+	* tree.c (free_lang_data_in_decl): Clear visibility of TYPE_DECL.
+
+2016-03-10  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR lto/69589
 	* tree.c (need_assembler_name_p): Only record main variant type names.
 
 2016-03-10  Christophe Lyon  <christophe.lyon@linaro.org>

gcc/tree.c

@@ -5473,8 +5473,13 @@ free_lang_data_in_decl (tree decl)
 	  || (decl_function_context (decl) && !TREE_STATIC (decl)))
 	DECL_INITIAL (decl) = NULL_TREE;
     }
-  else if (TREE_CODE (decl) == TYPE_DECL
-	   || TREE_CODE (decl) == FIELD_DECL)
+  else if (TREE_CODE (decl) == TYPE_DECL)
+    {
+      DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
+      DECL_VISIBILITY_SPECIFIED (decl) = 0;
+      DECL_INITIAL (decl) = NULL_TREE;
+    }
+  else if (TREE_CODE (decl) == FIELD_DECL)
     DECL_INITIAL (decl) = NULL_TREE;
   else if (TREE_CODE (decl) == TRANSLATION_UNIT_DECL
            && DECL_INITIAL (decl)