From c251594f0abcc0b0793727b75256e9899096fc99 Mon Sep 17 00:00:00 2001
From: Lassi Kortela <lassi@lassi.io>
Date: Wed, 27 May 2020 00:51:30 +0300
Subject: [PATCH] Fix printf warning in json.c

---
 lib/chibi/json.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/chibi/json.c b/lib/chibi/json.c
index f47bfed8..d6d85342 100644
--- a/lib/chibi/json.c
+++ b/lib/chibi/json.c
@@ -415,7 +415,7 @@ sexp unparse_json_string(sexp ctx, sexp self, const sexp obj) {
           sprintf(cout, "\\t");
           break;
         default:
-          sprintf(cout, "%c", ch);
+          sprintf(cout, "%c", (int)ch);
           break;
       }
     } else if(ch <= 0xFFFF) {