[PATCH] fsync: document AIX misbehavior

[Paul Eggert]

* doc/posix-functions/fsync.texi (fsync):
Document failure on AIX with read-only file descriptor.
---
 ChangeLog                      | 6 ++++++
 doc/posix-functions/fsync.texi | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index cba559d..a215c03 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2015-06-06  Paul Eggert  <address@hidden>
+
+       fsync: document AIX misbehavior
+       * doc/posix-functions/fsync.texi (fsync):
+       Document failure on AIX with read-only file descriptor.
+
 2015-06-05  Jonathan Perkin  <address@hidden>  (tiny change)
 
        stdio: Don't redefine gets when using C++
diff --git a/doc/posix-functions/fsync.texi b/doc/posix-functions/fsync.texi
index b51a3c5..cbe57a3 100644
--- a/doc/posix-functions/fsync.texi
+++ b/doc/posix-functions/fsync.texi
@@ -15,4 +15,8 @@ mingw, MSVC 9.
 
 Portability problems not fixed by Gnulib:
 @itemize
address@hidden
+If the argument is a read-only file descriptor, this function fails
+with @code{EBADF} on some platforms:
+AIX 7.1.
 @end itemize
-- 
2.1.0