Fix SEGV of readline on FreeBSD. [ruby-core:21884]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24140 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,11 @@
+Thu Jul 16 12:42:10 2009  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* ext/readline/readline.c (readline_readline): rl_free_line_state
+	  before rl_cleanup_after_signal.
+
+	* ext/readline/readline.c (Init_readline): set rl_catch_signals and
+	  rl_catch_signwinch as 0. [ruby-core:21884]
+
 Thu Jul 16 08:59:22 2009  Koichi Sasada  <ko1@atdot.net>
 
 	* node.h, vm_core.h, variable.c: rename global_entry to rb_global_entry.

ext/readline/readline.c

@@ -253,6 +253,7 @@ readline_readline(int argc, VALUE *argv, VALUE self)
     if (status) {
 #if defined HAVE_RL_CLEANUP_AFTER_SIGNAL
         /* restore terminal mode and signal handler*/
+        rl_free_line_state();
         rl_cleanup_after_signal();
 #elif defined HAVE_RL_DEPREP_TERM_FUNCTION
         /* restore terminal mode */
@@ -1450,6 +1451,8 @@ Init_readline()
 #elif defined HAVE_RL_EVENT_HOOK
     rl_event_hook = readline_event;
 #endif
+    rl_catch_signals = 0;
+    rl_catch_sigwinch = 0;
 #ifdef HAVE_RL_CLEAR_SIGNALS
     rl_clear_signals();
 #endif