From 672b6df4743dbf76e059c640ad3fe45f7c795594 Mon Sep 17 00:00:00 2001
From: Allen <38368409+AllenX2018@users.noreply.github.com>
Date: Wed, 18 Sep 2019 16:18:51 +0800
Subject: [PATCH] Update apiref.rst

fix the documentation about json_dumps. refs #471
---
 doc/apiref.rst | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/doc/apiref.rst b/doc/apiref.rst
index 1b305f5..3c4fa47 100644
--- a/doc/apiref.rst
+++ b/doc/apiref.rst
@@ -1091,7 +1091,9 @@ These functions output UTF-8:
 
    Returns the JSON representation of *json* as a string, or *NULL* on
    error. *flags* is described above. The return value must be freed
-   by the caller using :func:`free()`.
+   by the caller using :func:`free()`. Note that if you have called
+   :func:`json_set_alloc_funcs()` to override :func:`free()`, you should
+   call your custom free function instead to free the return value.
 
 .. function:: size_t json_dumpb(const json_t *json, char *buffer, size_t size, size_t flags)