RFR: 8229887: ZIP FS cannot replace an entry in a that was added via the STORED method

[Alan Bateman]

On 04/09/2019 08:22, Langer, Christoph wrote:
>
> Hi Lance,
>
> thanks for your comments. I’ve requested the patches for jdk13u and 
> jdk11u then. By default they’d reach the Jan 2020 update release, so 
> they’ll get some time to bake in there. Actually, since this patch 
> fixes a regression that has been introduced just recently, I could 
> imagine that the fix would even be a candidate for the October 
> patches. It looks quite obvious and I don’t think that there’s a huge 
> performance risk. But I don’t want to take this decision on my own ��
>
>
There has been significant churn in the zipfs implementation in recent 
releases. Most of the changes came with regression tests but I'm 
concerned that we still don't have enough tests to be confident changes 
this code. Time stamps and zip64 are two areas where we often get 
bitten. I think we need to figure out how to do interop tests with other 
zip tools too. Improved tests would help with the confidence when 
changing this code and also help when there are requests for back ports.

-Alan
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