diff --git a/ChangeLog b/ChangeLog
index c264ec98a4..32e864bee2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed May 30 00:24:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* parse.y (open_args, arg_ambiguous, parser_warning): should not use
+	  rb_warning in the parser.
+
 Tue May 29 12:31:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* win32/win32.c (rb_w32_opendir): removed duplicated code.
diff --git a/parse.y b/parse.y
index 7b33068452..2bfd9c73fa 100644
--- a/parse.y
+++ b/parse.y
@@ -2339,7 +2339,7 @@ open_args	: call_args
 		| tLPAREN_ARG  {lex_state = EXPR_ENDARG;} rparen
 		    {
 		    /*%%%*/
-			rb_warning("don't put space before argument parentheses");
+			rb_warning0("don't put space before argument parentheses");
 			$$ = 0;
 		    /*%
 			$$ = dispatch1(space, dispatch1(arg_paren, arg_new()));
@@ -2348,7 +2348,7 @@ open_args	: call_args
 		| tLPAREN_ARG call_args2 {lex_state = EXPR_ENDARG;} rparen
 		    {
 		    /*%%%*/
-			rb_warning("don't put space before argument parentheses");
+			rb_warning0("don't put space before argument parentheses");
 			$$ = $2;
 		    /*%
 			$$ = dispatch1(space, dispatch1(arg_paren, $2));
@@ -5398,7 +5398,7 @@ parser_here_document(struct parser_params *parser, NODE *here)
 static void
 arg_ambiguous(void)
 {
-    rb_warning("ambiguous first argument; put parentheses or even spaces");
+    rb_warning0("ambiguous first argument; put parentheses or even spaces");
 }
 #else
 static void
@@ -6920,7 +6920,7 @@ parser_warning(NODE *node, const char *mesg)
 {
     int line = ruby_sourceline;
     ruby_sourceline = nd_line(node);
-    rb_warning("%s", mesg);
+    rb_warningS("%s", mesg);
     ruby_sourceline = line;
 }
 
diff --git a/version.h b/version.h
index 15abe79ca6..3ab78c0e4f 100644
--- a/version.h
+++ b/version.h
@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2007-05-29"
+#define RUBY_RELEASE_DATE "2007-05-30"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20070529
+#define RUBY_RELEASE_CODE 20070530
 #define RUBY_PATCHLEVEL 0
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_YEAR 2007
 #define RUBY_RELEASE_MONTH 5
-#define RUBY_RELEASE_DAY 29
+#define RUBY_RELEASE_DAY 30
 
 #ifdef RUBY_EXTERN
 RUBY_EXTERN const char ruby_version[];