diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index ab893dbfd8..7a0ecc0cf1 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -1463,4 +1463,10 @@ class TestIO < Test::Unit::TestCase
     assert(File.read(t.path, 4).tainted?, '[ruby-dev:38826]')
     assert(File.open(t.path) {|f| f.read(4)}.tainted?, '[ruby-dev:38826]')
   end
+
+  def test_binmode_after_closed
+    t = make_tempfile
+    t.close
+    assert_raise(IOError) {t.binmode}
+  end
 end
diff --git a/version.h b/version.h
index 0d29a26215..a4d7754ce9 100644
--- a/version.h
+++ b/version.h
@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.2"
-#define RUBY_RELEASE_DATE "2009-09-04"
+#define RUBY_RELEASE_DATE "2009-09-05"
 #define RUBY_PATCHLEVEL -1
 #define RUBY_BRANCH_NAME "trunk"
 
@@ -8,7 +8,7 @@
 #define RUBY_VERSION_TEENY 1
 #define RUBY_RELEASE_YEAR 2009
 #define RUBY_RELEASE_MONTH 9
-#define RUBY_RELEASE_DAY 4
+#define RUBY_RELEASE_DAY 5
 
 #include "ruby/version.h"