From 5fa281c0ee35ebe6f734d3fd095a6e76b39d0855 Mon Sep 17 00:00:00 2001
From: Alan Bateman <alanb@openjdk.org>
Date: Fri, 6 Jan 2012 15:00:22 +0000
Subject: [PATCH] 7127235: (fs) NPE in Files.walkFileTree if cached attributes
 are GC'ed

Reviewed-by: forax, chegar
---
 jdk/src/share/classes/java/nio/file/FileTreeWalker.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jdk/src/share/classes/java/nio/file/FileTreeWalker.java b/jdk/src/share/classes/java/nio/file/FileTreeWalker.java
index 6e1a83ff16f..7b1f43fe4ac 100644
--- a/jdk/src/share/classes/java/nio/file/FileTreeWalker.java
+++ b/jdk/src/share/classes/java/nio/file/FileTreeWalker.java
@@ -92,7 +92,7 @@ class FileTreeWalker {
             (System.getSecurityManager() == null))
         {
             BasicFileAttributes cached = ((BasicFileAttributesHolder)file).get();
-            if (!followLinks || !cached.isSymbolicLink())
+            if (cached != null && (!followLinks || !cached.isSymbolicLink()))
                 attrs = cached;
         }
         IOException exc = null;