From 572fff1be422bcfed932f47dbdae403a56274060 Mon Sep 17 00:00:00 2001
From: Bruno Carlin <bruno.carlin@waarp.org>
Date: Sun, 17 May 2020 14:34:56 +0200
Subject: [PATCH] Fix a race conditions

Two accesses to a loggers were not protected by a logger's mutex
---
 logger.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/logger.go b/logger.go
index 4393d49..0f24b48 100644
--- a/logger.go
+++ b/logger.go
@@ -28,11 +28,17 @@ func NewLogger(name string) (l *Logger) {
 
 // AddBackend add a new Backend to the logger. All set backends are kept.
 func (l *Logger) AddBackend(b Backend) {
+	l.Lock()
+	defer l.Unlock()
+
 	l.backends = append(l.backends, b)
 }
 
 // SetBackend sets the backend list to the logger. Any existing backend will be lost.
 func (l *Logger) SetBackend(b ...Backend) {
+	l.Lock()
+	defer l.Unlock()
+
 	l.backends = b
 }