From 780e19cb1eb2084624342cd2bb54fdad5f59f433 Mon Sep 17 00:00:00 2001
From: Sean Coffey <coffeys@openjdk.org>
Date: Thu, 15 Oct 2015 14:41:37 +0100
Subject: [PATCH] 8038502: Deflater.needsInput() should use synchronization

Reviewed-by: chegar
---
 jdk/src/java.base/share/classes/java/util/zip/Deflater.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/jdk/src/java.base/share/classes/java/util/zip/Deflater.java b/jdk/src/java.base/share/classes/java/util/zip/Deflater.java
index 5bb0fe537d3..3e0089e079f 100644
--- a/jdk/src/java.base/share/classes/java/util/zip/Deflater.java
+++ b/jdk/src/java.base/share/classes/java/util/zip/Deflater.java
@@ -318,7 +318,9 @@ class Deflater {
      * should be called in order to provide more input
      */
     public boolean needsInput() {
-        return len <= 0;
+        synchronized (zsRef) {
+            return len <= 0;
+        }
     }
 
     /**