* symtab.c (symtab_nonoverwritable_alias): Copy READONLY flag for variables.

From-SVN: r210919

gcc/ChangeLog

 2014-05-23  Jan Hubicka  <hubicka@ucw.cz>
 
+	* symtab.c (symtab_nonoverwritable_alias): Copy READONLY flag for variables.
+
+2014-05-23  Jan Hubicka  <hubicka@ucw.cz>
+
 	* ipa-visibility.c (can_replace_by_local_alias_in_vtable): New function.
 	(update_vtable_references): New function.
 	(function_and_variable_visibility): Rewrite also vtable initializers.

gcc/symtab.c

@@ -1163,9 +1163,13 @@ symtab_nonoverwritable_alias (symtab_node *node)
 				 (new_decl, node->decl);
     }
   else
-    new_node = varpool_create_variable_alias (new_decl, node->decl);
+    {
+      TREE_READONLY (new_decl) = TREE_READONLY (node->decl);
+      new_node = varpool_create_variable_alias (new_decl, node->decl);
+    }
   symtab_resolve_alias (new_node, node);  
-  gcc_assert (decl_binds_to_current_def_p (new_decl));
+  gcc_assert (decl_binds_to_current_def_p (new_decl)
+	      && targetm.binds_local_p (new_decl));
   return new_node;
 }