From e33c7bec39d677d0f211a98362cebd81124bb45b Mon Sep 17 00:00:00 2001
From: liyimin <liyimin@ruijie.com.cn>
Date: Tue, 6 Jun 2023 16:02:46 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E7=A9=BA=E5=88=A4=E6=96=AD?=
 =?UTF-8?q?=EF=BC=8C=E9=81=BF=E5=85=8Dbuffer=E4=B8=BAnull=E6=97=B6?=
 =?UTF-8?q?=E6=8A=9B=E5=87=BA=20NullPointerException?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/java/net/jpountz/lz4/LZ4FrameInputStream.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/java/net/jpountz/lz4/LZ4FrameInputStream.java b/src/java/net/jpountz/lz4/LZ4FrameInputStream.java
index 4a75bac..918f556 100644
--- a/src/java/net/jpountz/lz4/LZ4FrameInputStream.java
+++ b/src/java/net/jpountz/lz4/LZ4FrameInputStream.java
@@ -380,6 +380,8 @@ public long skip(long n) throws IOException {
 
   @Override
   public int available() throws IOException {
+    //增加空判断，避免buffer为null时抛出 NullPointerException
+    if (null == buffer) return 0;
     return buffer.remaining();
   }