--- a/ChangeLog	Mon Oct 09 22:03:39 2017 +0200
+++ b/ChangeLog	Tue Oct 10 21:57:28 2017 +0200
@@ -1,3 +1,9 @@
+2017-10-10  Bruno Haible  <bruno@clisp.org>
+
+	doc: Improve doc about ioctl.
+	* doc/posix-functions/ioctl.texi: Fix list of platforms with non-POSIX
+	prototype.
+
 2017-10-09  Bruno Haible  <bruno@clisp.org>
 
 	wcwidth: Don't use obsolete syntax of 'test'.

--- a/doc/posix-functions/ioctl.texi	Mon Oct 09 22:03:39 2017 +0200
+++ b/doc/posix-functions/ioctl.texi	Tue Oct 10 21:57:28 2017 +0200
@@ -13,8 +13,9 @@
 @code{ioctlsocket}, and error codes from this function are not placed in
 @code{errno}, and @code{WSAGetLastError} must be used instead.
 @item
-On glibc platforms, the second parameter is of type @code{unsigned long}
-rather than @code{int}.
+The second parameter is of type @code{unsigned long} rather than @code{int}
+on some platforms:
+glibc 2.26, Mac OS X 10.5, FreeBSD 11.0, NetBSD 7.0, OpenBSD 6.0, BeOS.
 @end itemize
 
 Portability problems not fixed by Gnulib: