From 5a78094b6f6daa7a39f9e0b240356e41f9915544 Mon Sep 17 00:00:00 2001
From: dearplain <lw6c@qq.com>
Date: Tue, 14 Jun 2022 10:41:12 +0800
Subject: [PATCH] fix log crash when print empty string

---
 log/log.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/log/log.go b/log/log.go
index 371f601..7317a5f 100644
--- a/log/log.go
+++ b/log/log.go
@@ -209,7 +209,7 @@ func (l *Logger) Output(callDepth int, level int, format string, v ...interface{
 
 	buf = append(buf, s...)
 
-	if s[len(s)-1] != '\n' {
+	if len(s) == 0 || s[len(s)-1] != '\n' {
 		buf = append(buf, '\n')
 	}