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diff --git a/gnulib/doc/posix-functions/write.texi b/gnulib/doc/posix-functions/write.texi
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+@node write
+@section @code{write}
+@findex write
+
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/write.html}
+
+Gnulib module: write, nonblocking, sigpipe
+
+Portability problems fixed by Gnulib module @code{stdio}, together with module @code{nonblocking}:
+@itemize
+@item
+This function crashes when invoked with invalid arguments on some platforms:
+MSVC 9.
+@item
+When writing to a non-blocking pipe whose buffer is full, this function fails
+with @code{errno} being set to @code{ENOSPC} instead of @code{EAGAIN} on some
+platforms:
+mingw, MSVC 9.
+@item
+When writing to a non-blocking pipe on which no reader is currently waiting
+an amount of bytes that exceeds the pipe buffer's size, then -- even if the
+pipe's buffer is empty -- this function fails, instead of performing a partial
+write into the pipe buffer, on some platforms:
+mingw, MSVC 9.
+@end itemize
+
+Portability problems fixed by Gnulib module @code{stdio}, together with module @code{sigpipe}:
+@itemize
+@item
+When writing to a pipe with no readers, this function fails with error
+@code{EINVAL}, instead of obeying the current @code{SIGPIPE} handler, on
+some platforms:
+mingw, MSVC 9.
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function may fail with error @code{EINTR}, even in programs that don't
+install any signal handlers, on some platforms:
+MacOS X 10.5.
+@end itemize
+
+For handling @code{EINTR}, Gnulib provides a module @samp{safe-write} with a
+function @code{safe_write}.