diff --git a/ChangeLog b/ChangeLog
index 3a7a31c7941a5d..069631ca1b144d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Aug 11 12:18:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* node.h (rb_parser_{get,set}_yydebug): used in ripper.
+
 Wed Aug 11 11:01:15 2010  Kenta Murata  <mrkn@mrkn.jp>
 
 	* ext/bigdecimal/bigdecimal.c: don't use // comment.
diff --git a/node.h b/node.h
index f8cf7de7b29859..c7b472e587886b 100644
--- a/node.h
+++ b/node.h
@@ -448,9 +448,15 @@ typedef struct RNode {
 #define NEW_PRELUDE(p,b) NEW_NODE(NODE_PRELUDE,p,b,0)
 #define NEW_OPTBLOCK(a) NEW_NODE(NODE_OPTBLOCK,a,0,0)
 
+#if defined __GNUC__ && __GNUC__ >= 4
+#pragma GCC visibility push(default)
+#endif
+
 VALUE rb_parser_new(void);
 VALUE rb_parser_end_seen_p(VALUE);
 VALUE rb_parser_encoding(VALUE);
+VALUE rb_parser_get_yydebug(VALUE);
+VALUE rb_parser_set_yydebug(VALUE, VALUE);
 
 NODE *rb_parser_compile_cstr(volatile VALUE, const char*, const char*, int, int);
 NODE *rb_parser_compile_string(volatile VALUE, const char*, VALUE, int);
@@ -473,6 +479,10 @@ VALUE rb_gvar_get(struct rb_global_entry *);
 VALUE rb_gvar_set(struct rb_global_entry *, VALUE);
 VALUE rb_gvar_defined(struct rb_global_entry *);
 
+#if defined __GNUC__ && __GNUC__ >= 4
+#pragma GCC visibility pop
+#endif
+
 #if defined(__cplusplus)
 #if 0
 { /* satisfy cc-mode */