From 86edc9ab8541d15b470dd4fe0bac1e136c2ffced Mon Sep 17 00:00:00 2001
From: ksss <co000ri@gmail.com>
Date: Sun, 21 May 2017 22:54:46 +0900
Subject: IO#sysread should raise IOError when closed

---
 src/io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/io.c b/src/io.c
index 2a24b18a4..f15f182f2 100644
--- a/src/io.c
+++ b/src/io.c
@@ -636,7 +636,7 @@ mrb_io_sysread(mrb_state *mrb, mrb_value io)
     buf = mrb_str_resize(mrb, buf, maxlen);
   }
 
-  fptr = (struct mrb_io *)mrb_get_datatype(mrb, io, &mrb_io_type);
+  fptr = (struct mrb_io *)io_get_open_fptr(mrb, io);
   ret = read(fptr->fd, RSTRING_PTR(buf), maxlen);
   switch (ret) {
     case 0: /* EOF */
-- 
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