From cc1937a3af09508a5968d17ce4f7173829de12b3 Mon Sep 17 00:00:00 2001
From: Bernhard Schelling <14200249+schellingb@users.noreply.github.com>
Date: Mon, 26 Oct 2020 10:44:04 +0900
Subject: [PATCH] Fix possible output corruption in rjson

Was possible when translation service was adding a base64 encoded string with a length less than 1536 characters.
Introduced in commit c20b01e9e1472625e338b1c3a7e657e6ff20213c.
---
 libretro-common/formats/json/rjson.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libretro-common/formats/json/rjson.c b/libretro-common/formats/json/rjson.c
index 93695e6144..d972ceca00 100644
--- a/libretro-common/formats/json/rjson.c
+++ b/libretro-common/formats/json/rjson.c
@@ -1303,7 +1303,7 @@ void rjsonwriter_raw(rjsonwriter_t *writer, const char *buf, int len)
       buf += add;
       if (writer->buf_num + len <= writer->buf_cap)
       {
-         memcpy(writer->buf, buf, len);
+         memcpy(writer->buf + writer->buf_num, buf, len);
          writer->buf_num += len;
       }
       else if (writer->io(buf, len, writer->user_data) != len)