From f78c069e6ef62a34b7daf56f3bd4aed224c8858b Mon Sep 17 00:00:00 2001
From: XiaJianJun <chaijin.xia@tuya.com>
Date: Sun, 25 Apr 2021 15:39:31 +0800
Subject: [PATCH] (fix draw) txt add null pointer judgment to avoid segment
 fault

---
 src/lv_draw/lv_draw_label.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/lv_draw/lv_draw_label.c b/src/lv_draw/lv_draw_label.c
index 970791ffc..e73e01110 100644
--- a/src/lv_draw/lv_draw_label.c
+++ b/src/lv_draw/lv_draw_label.c
@@ -122,7 +122,11 @@ LV_ATTRIBUTE_FAST_MEM void lv_draw_label(const lv_area_t * coords, const lv_area
     int32_t w;
 
     /*No need to waste processor time if string is empty*/
-    if(txt[0] == '\0')  return;
+    if (txt != NULL) {
+        if(txt[0] == '\0')  return;
+    } else {
+        return;
+    }
 
     lv_area_t clipped_area;
     bool clip_ok = _lv_area_intersect(&clipped_area, coords, mask);