From 33f5448a382fda5b2dae405c1510a1927d7f0fa2 Mon Sep 17 00:00:00 2001
From: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
Date: Fri, 17 Jan 2020 15:49:36 +0100
Subject: [PATCH] fix overflow on 16 bit MCU in font processing

---
 src/lv_font/lv_font_fmt_txt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lv_font/lv_font_fmt_txt.c b/src/lv_font/lv_font_fmt_txt.c
index a36be57c8..78fcccdd0 100644
--- a/src/lv_font/lv_font_fmt_txt.c
+++ b/src/lv_font/lv_font_fmt_txt.c
@@ -475,5 +475,5 @@ static uint8_t rle_next(void)
  */
 static int32_t unicode_list_compare(const void * ref, const void * element)
 {
-    return (*(uint16_t *)ref) - (*(uint16_t *)element);
+    return ((int32_t)(*(uint16_t *)ref)) - ((int32_t)(*(uint16_t *)element));
 }