eolian: also ban underscore prefixed builtins in stable API

diff --git a/src/lib/eolian/database_validate.c b/src/lib/eolian/database_validate.c
index 95dc4a5..eb81875 100644 (file)
--- a/src/lib/eolian/database_validate.c
+++ b/src/lib/eolian/database_validate.c
@@ -292,6 +292,8 @@ _validate_type(Validate_State *vals, Eolian_Type *tp)
                 switch (id)
                   {
                    case KW_void_ptr:
+                   case KW___undefined_type:
+                   case KW___builtin_free_cb:
                      if (vals->stable)
                        {
                           _eo_parser_log(&tp->base,