From d6438f13d10acf192955b98b3f3a3fd5948f211e Mon Sep 17 00:00:00 2001
From: Eric Blake <eblake@redhat.com>
Date: Wed, 22 Jul 2009 02:17:12 +0000
Subject: Avoid a fault from locking a closed standard file.

* libc/stdio/fflush.c (_fflush_r): Give up early if stream has
been previously closed.
---
 newlib/libc/stdio/fflush.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'newlib/libc/stdio/fflush.c')

diff --git a/newlib/libc/stdio/fflush.c b/newlib/libc/stdio/fflush.c
index 218940d..bc208ec 100644
--- a/newlib/libc/stdio/fflush.c
+++ b/newlib/libc/stdio/fflush.c
@@ -93,6 +93,9 @@ _DEFUN(_fflush_r, (ptr, fp),
 
   CHECK_INIT (ptr, fp);
 
+  if (!fp->_flags)
+    return 0;
+
   _flockfile (fp);
 
   t = fp->_flags;
-- 
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