From 82c8b47966cfe83025bfbabe776332ccac050cbb Mon Sep 17 00:00:00 2001
From: Vladislav Nezhutin <exe-dealer@yandex.ru>
Date: Wed, 26 Aug 2020 14:05:36 +0600
Subject: [PATCH] pg 13 support

---
 dockerfile         | 1 +
 pg_json_decoding.c | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/dockerfile b/dockerfile
index 0a60313..3786180 100644
--- a/dockerfile
+++ b/dockerfile
@@ -7,6 +7,7 @@ RUN set -x \
  && cd /tmp \
  && wget -qO- https://github.com/postgres/postgres/archive/REL_11_4.tar.gz | tar xz \
 #  && wget -qO- https://github.com/postgres/postgres/archive/REL_12_1.tar.gz | tar xz \
+#  && wget -qO- https://github.com/postgres/postgres/archive/REL_13_BETA3.tar.gz | tar xz \
  \
  && apk add --no-cache --virtual .build-deps \
   --repositories-file /dev/null \
diff --git a/pg_json_decoding.c b/pg_json_decoding.c
index 382e378..02e37f8 100644
--- a/pg_json_decoding.c
+++ b/pg_json_decoding.c
@@ -9,6 +9,7 @@
 #include "utils/syscache.h"
 #include "utils/json.h"
 #include "utils/builtins.h"
+#include "utils/array.h"
 
 PG_MODULE_MAGIC;
 
@@ -245,7 +246,11 @@ static void pg_decode_message(
   appendStringInfoString(ctx->out, ",\"prefix\":");
   escape_json(ctx->out, prefix);
   message_b64 = palloc0(pg_b64_enc_len(sz) + 1);
-  pg_b64_encode(message, sz, message_b64);
+  pg_b64_encode(message, sz, message_b64
+#if (PG_VERSION_NUM >= 130000)
+    ,pg_b64_enc_len(sz) + 1
+#endif
+  );
   appendStringInfo(ctx->out, ",\"content\":\"%s\"}", message_b64);
   pfree(message_b64);
   MemoryContextSwitchTo(old);