Upstream PR: https://github.com/aperezdc/signify/pull/43
From: Brahmajit Das <brahmajit.xyz@gmail.com>
Date: Sat, 29 Jul 2023 20:07:48 +0000
Subject: [PATCH] Fix build with clang 16

Bug: https://bugs.gentoo.org/894354
Signed-off-by: Brahmajit Das <brahmajit.xyz@gmail.com>
--- a/base64.c
+++ b/base64.c
@@ -52,6 +52,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include "base64.h"
 
 static const char Base64[] =
 	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
--- /dev/null
+++ b/base64.h
@@ -0,0 +1,2 @@
+int b64_pton(char const *, unsigned char *, size_t);
+int b64_ntop(unsigned char const *, size_t , char *, size_t);
--- a/signify.c
+++ b/signify.c
@@ -34,6 +34,7 @@
 #include "sha2.h"
 
 #include "crypto_api.h"
+#include "base64.h"
 #include "signify.h"
 
 #define SIGBYTES crypto_sign_ed25519_BYTES
-- 
2.41.0