From b1305ba07a5027f6745544190ebfea6df57b962d Mon Sep 17 00:00:00 2001
From: qxo <49526356@qq.com>
Date: Mon, 10 Aug 2020 00:17:21 +0800
Subject: [PATCH] =?UTF-8?q?fix=EF=BC=9Afix=20NullPointerException=20for=20?=
 =?UTF-8?q?replaceParam=20when=20message=20is=20null=20(#5280)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../skywalking/apm/agent/core/logging/core/PatternLogger.java  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/PatternLogger.java b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/PatternLogger.java
index 87e92c7e71..9bad76e913 100644
--- a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/PatternLogger.java
+++ b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/PatternLogger.java
@@ -85,6 +85,9 @@ public class PatternLogger implements ILog {
     }
 
     private String replaceParam(String message, Object... parameters) {
+        if (message == null) {
+            return message;
+        }
         int startSize = 0;
         int parametersIndex = 0;
         int index;
-- 
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