RFR: 8193682: Infinite loop in ZipOutputStream.close()

Ravi Reddy rreddy at openjdk.java.net
Wed Sep 29 15:47:36 UTC 2021

On Fri, 17 Sep 2021 12:45:29 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Hi all,
>> Please review this fix for Infinite loop in ZipOutputStream.close().
>> The main issue here is when ever there is an exception during close operations on GZip we are not setting the deflator to a finished state which is leading to an infinite loop when we try writing on the same GZip instance( since we use while(!def.finished()) inside the write operation).
>> Thanks,
>> Ravi
> src/java.base/share/classes/java/util/zip/DeflaterOutputStream.java line 249:
>> 247:              out.close();
>> 248:              closed = true;
>> 249:              throw ioe;
> Have you tried using try-finally instead?

Hi Alan , Sorry for the delayed response , I was out of office for 3 weeks. I haven't tried with try-finally , I'm reworking on the fix as , if we directly use zip.finish() , we are facing the same issue. I will update here once the fix is ready.Thanks.


PR: https://git.openjdk.java.net/jdk/pull/5522

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