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From 74d9d6a293d7462dea8f83e7fc5ac792e956a0ad Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Thu, 8 Mar 2018 16:42:45 -0800
Subject: [PATCH 2/2] fflush: be more paranoid about libio.h change
Suggested by Eli Zaretskii in:
https://lists.gnu.org/r/emacs-devel/2018-03/msg00270.html
* lib/fbufmode.c (fbufmode):
* lib/fflush.c (clear_ungetc_buffer_preserving_position)
(disable_seek_optimization, rpl_fflush):
* lib/fpending.c (__fpending):
* lib/fpurge.c (fpurge):
* lib/freadable.c (freadable):
* lib/freadahead.c (freadahead):
* lib/freading.c (freading):
* lib/freadptr.c (freadptr):
* lib/freadseek.c (freadptrinc):
* lib/fseeko.c (fseeko):
* lib/fseterr.c (fseterr):
* lib/fwritable.c (fwritable):
* lib/fwriting.c (fwriting):
Look at _IO_ftrylockfile as well as at _IO_EOF_SEEN.
---
lib/fseterr.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
[yann.morin.1998@free.fr: partially backport from upstream gnulib]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
diff --git a/lib/fseterr.c b/lib/fseterr.c
index adb637256..fd9da6338 100644
--- a/lib/fseterr.c
+++ b/lib/fseterr.c
@@ -29,7 +29,8 @@ fseterr (FILE *fp)
/* Most systems provide FILE as a struct and the necessary bitmask in
<stdio.h>, because they need it for implementing getc() and putc() as
fast macros. */
-#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+ /* GNU libc, BeOS, Haiku, Linux libc5 */
fp->_flags |= _IO_ERR_SEEN;
#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
--
2.14.1
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