diff -r -U2 clisp-2.49.orig/modules/readline/readline.lisp clisp-2.49/modules/readline/readline.lisp
--- clisp-2.49.orig/modules/readline/readline.lisp	2010-01-07 04:18:03.000000000 +0600
+++ clisp-2.49/modules/readline/readline.lisp	2016-09-29 22:23:53.837631568 +0700
@@ -425,5 +425,5 @@
 (def-c-var gnu-readline-p (:name "rl_gnu_readline_p") (:type int)
   (:documentation "True if this is real GNU readline."))
-(def-c-var readline-state (:name "rl_readline_state") (:type int)
+(def-c-var readline-state (:name "rl_readline_state") (:type ulong)
   (:documentation "Flags word encapsulating the current readline state."))
 (def-c-var editing-mode (:name "rl_editing_mode") (:type int)