diff --git a/ChangeLog b/ChangeLog
index f18278d4b1..4bbc94c956 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Wed Oct 26 09:15:48 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
+
+	* ext/syck/implicit.c (syck_type_id_to_uri): should return
+	  newly allocated memory. otherwise, type_id will be freed
+	  twice. [ruby-dev:27384] [ruby-core:6385]
+
 Wed Oct 26 01:58:19 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (RUBY_EXTERN): macro to export symbols in shared
diff --git a/ext/syck/implicit.c b/ext/syck/implicit.c
index d8016986b4..d356faf7d9 100644
--- a/ext/syck/implicit.c
+++ b/ext/syck/implicit.c
@@ -2481,7 +2481,7 @@ yy244:	++YYCURSOR;
 	goto yy245;
 yy245:
 #line 174 "implicit.re"
-{   return type_id; }
+{   return syck_strndup( type_id, strlen( type_id ) ); }
 #line 2485 "<stdout>"
 yy246:	yych = *++YYCURSOR;
 	switch(yych){
@@ -2928,7 +2928,7 @@ yy264:	++YYCURSOR;
 	goto yy265;
 yy265:
 #line 172 "implicit.re"
-{   return type_id; }
+{   return syck_strndup( type_id, strlen( type_id ) ); }
 #line 2932 "<stdout>"
 yy266:	yych = *++YYCURSOR;
 	switch(yych){