shell bypass 403
diff --git a/ext/readline/extconf.rb b/ext/readline/extconf.rb
index b820c0b..f299cba 100644
--- a/ext/readline/extconf.rb
+++ b/ext/readline/extconf.rb
@@ -59,6 +59,9 @@ have_func("rl_cleanup_after_signal")
have_func("rl_clear_signals")
have_func("rl_vi_editing_mode")
have_func("rl_emacs_editing_mode")
+# workaround for native windows.
+/mswin|bccwin|mingw/ !~ RUBY_PLATFORM && have_readline_var("rl_catch_sigwinch")
+/mswin|bccwin|mingw/ !~ RUBY_PLATFORM && have_readline_var("rl_catch_signals")
have_func("replace_history_entry")
have_func("remove_history")
create_makefile("readline")
diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index c9acaad..637cb99 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -833,6 +833,12 @@ Init_readline()
#ifdef HAVE_RL_EVENT_HOOK
rl_event_hook = readline_event;
#endif
+#ifdef HAVE_RL_CATCH_SIGNALS
+ rl_catch_signals = 0;
+#endif
+#ifdef HAVE_RL_CATCH_SIGWINCH
+ rl_catch_sigwinch = 0;
+#endif
#ifdef HAVE_RL_CLEAR_SIGNALS
rl_clear_signals();
#endif