Hi,

In ZipFileSystem.java, at 1071.

 - The code will be more readable if you use character literal '/' instead of 47.

 - Save making an extra copy of the name array by testing for '/' directly in the cen array
   and create either the full name or the name without the '/'.

 - 1073: The coding style should put the '{' on the same line as the 'if'.
   Use the file's coding style.

Thanks, Roger

On 11/27/2018 04:51 AM, Deepak Kejriwal wrote:
Hi nio-dev team,

Gentle reminder for review of below fix.

Regards,

Deepak

From: Deepak Kejriwal <deepak.kejri...@oracle.com>
Sent: Thursday, November 8, 2018 12:17 AM
To: 'nio-...@openjdk.java.net' <nio-...@openjdk.java.net>
Subject: RFR: JDK-8197398 (zipfs) OutOfMemoryError when talking contents of 
empty JAR file

Hi all,

Please help review the changes for JDK-8199776 to JDK8u:-

Master Bug: https://bugs.openjdk.java.net/browse/JDK-8199776

Webrev: http://cr.openjdk.java.net/~rpatil/8199776/webrev.00/

Background:-

The Files.walkFileTree walk indefinitely while processing JAR file with "/" as 
a directory inside.

Proposed fix:

Files.walkFileTree api for jar internally uses ZipfileSystem. While iterating over the zip entries we have 
added a check to see if entry name is equal to "/" (absolute path). If the entry name is equal to 
"/" we don't add it to "inodes" map so that we don't end up with infinite loop.

We have similar bug HYPERLINK 
"https://bugs.openjdk.java.net/browse/JDK-8197398"JDK-8197398 fixed in jdk 12. 
Below is the difference between fix for jdk 12 and jdk 8:-

The fix for above issue for jdk 12 handle a case where we can update an existing entry in jar with 
"/" (absolute path).  As in case of jdk 8 we cannot update the existing zipentry as doing 
so we get "FileAlreadyExistsException". Therefore, fix for jdk 8u does not consider this 
case.

Regards,

Deepak


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