From 51d41593234a666d435ec95bb40ebbfc419ac222 Mon Sep 17 00:00:00 2001
From: Karl Williamson <khw@cpan.org>
Date: Thu, 27 Aug 2020 09:28:17 -0600
Subject: [PATCH] Document PERLIO_FUNCS_(DECL|CAST)

---
 perlio.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/perlio.h b/perlio.h
index 836ff6f72f4b..f0c1b4f3c92d 100644
--- a/perlio.h
+++ b/perlio.h
@@ -63,6 +63,16 @@ typedef PerlIOl *PerlIO;
 #define PerlIO PerlIO
 #define PERLIO_LAYERS 1
 
+/*
+=for apidoc_section $io
+=for apidoc Amu||PERLIO_FUNCS_DECL|PerlIO * func
+Declare C<func> to be a PerlIO function, that is, of type C<PerlIO_funcs>.
+
+=for apidoc Ay|PerlIO_funcs *|PERLIO_FUNCS_CAST|PerlIO * func
+Cast the function C<func> to be of type S<C<PerlIO_funcs *>>.
+
+=cut
+*/
 #define PERLIO_FUNCS_DECL(funcs) const PerlIO_funcs funcs
 #define PERLIO_FUNCS_CAST(funcs) (PerlIO_funcs*)(funcs)