* ruby.h: use ifdef (or defined) for macro constants that may or

  may not be defined to shut up gcc's -Wundef warnings.
  [ruby-core:08447]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10648 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/io.c b/io.c
index 1d34632e3b..d454d33edd 100644
--- a/io.c
+++ b/io.c
@@ -267,7 +267,7 @@ rb_io_check_readable(fptr)
     if (!(fptr->mode & FMODE_READABLE)) {
 	rb_raise(rb_eIOError, "not opened for reading");
     }
-#if NEED_IO_SEEK_BETWEEN_RW
+#ifdef NEED_IO_SEEK_BETWEEN_RW
     if (((fptr->mode & FMODE_WBUF) ||
 	 (fptr->mode & (FMODE_SYNCWRITE|FMODE_RBUF)) == FMODE_SYNCWRITE) &&
 	!feof(fptr->f) &&