3 files changed, 7 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 0894933c36..0f5a3e3dd7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Mar  3 15:05:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/dl/lib/dl/value.rb (DL::ValueUtil#wrap_arg): NULL for nil.
+
 Tue Sep  8 08:32:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* test/dl/test_{cfunc,ptr}.rb: added tests from Aaron Patterson.
diff --git a/ext/dl/lib/dl/value.rb b/ext/dl/lib/dl/value.rb
index 254e1921ce..56dfcefa32 100644
--- a/ext/dl/lib/dl/value.rb
+++ b/ext/dl/lib/dl/value.rb
@@ -48,6 +48,8 @@ module DL
     def wrap_arg(arg, ty, funcs, &block)
         funcs ||= []
         case arg
+        when nil
+          return 0
         when CPtr
           return arg.to_i
         when IO
diff --git a/version.h b/version.h
index bf7d9dd8e7..ae09db154e 100644
--- a/version.h
+++ b/version.h
@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.1"
-#define RUBY_PATCHLEVEL 317
+#define RUBY_PATCHLEVEL 318
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1