getgroups: don't expose GETGROUPS_T to user

[gnulib.git] / doc / posix-functions / getgroups.texi

diff --git a/doc/posix-functions/getgroups.texi b/doc/posix-functions/getgroups.texi
index 951705e..745210e 100644 (file)
--- a/doc/posix-functions/getgroups.texi
+++ b/doc/posix-functions/getgroups.texi
@@ -14,6 +14,9 @@ mingw.
 @item
 On Ultrix 4.3, @code{getgroups (0, 0)} always fails.  See macro
 @samp{AC_FUNC_GETGROUPS}.
+@item
+On very old systems, this function operated on an array of @samp{int},
+even though that was a different size than an array of @samp{gid_t}.
 @end itemize
 
 Portability problems not fixed by Gnulib: