+#define AST_FLAG_INLINE (1<<2)
+#define AST_FLAG_INITIALIZED (1<<3)
+#define AST_FLAG_DEPRECATED (1<<4)
+#define AST_FLAG_INCLUDE_DEF (1<<5)
+#define AST_FLAG_IS_VARARG (1<<6)
+#define AST_FLAG_ALIAS (1<<7)
+#define AST_FLAG_ERASEABLE (1<<8)
+/* An array declared as []
+ * so that the size is taken from the initializer */
+#define AST_FLAG_ARRAY_INIT (1<<9)
+#define AST_FLAG_TYPE_MASK (AST_FLAG_VARIADIC | AST_FLAG_NORETURN)