* hash.c (rb_any_cmp): should handle Qundef in keys.

* eval.c (remove_method): should not remove a empty method to
  implement "undef".

* eval.c (rb_eval): should allow singleton class def for
  true/false/nil.

* parse.y (str_extend): backslash escape was done wrong.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2102 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/io.c b/io.c
index 2404b1faf5..78c2ef9750 100644
--- a/io.c
+++ b/io.c
@@ -1165,7 +1165,7 @@ rb_io_close(io)
     int fd;
 
     fptr = RFILE(io)->fptr;
-    if (!fptr) return;
+    if (!fptr) return Qnil;
     if (!fptr->f && !fptr->f2) return;
 
     fd = fileno(fptr->f);