From a8e58aa9ab2667045c1b21e5c1c5e21b075a782f Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Fri, 1 Sep 2000 09:09:56 +0000
Subject: Update.

	[_IO_MTSAFE_IO] (_IO_flockfile, _IO_funlockfile): Add macros which
	test _IO_USER_LOCK flag first.
---
 libio/libio.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'libio')

diff --git a/libio/libio.h b/libio/libio.h
index e662f48918..770cb6d2b3 100644
--- a/libio/libio.h
+++ b/libio/libio.h
@@ -442,6 +442,10 @@ extern int _IO_ftrylockfile (_IO_FILE *) __THROW;
 
 #ifdef _IO_MTSAFE_IO
 # define _IO_peekc(_fp) _IO_peekc_locked (_fp)
+# define _IO_flockfile(_fp) \
+  if (((_fp)->_mode & _IO_USER_LOCK) == 0) _IO_flockfile (_fp)
+# define _IO_funlockfile(_fp) \
+  if (((_fp)->_mode & _IO_USER_LOCK) == 0) _IO_funlockfile (_fp)
 #else
 # define _IO_peekc(_fp) _IO_peekc_unlocked (_fp)
 # define _IO_flockfile(_fp) /**/
-- 
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