zip64 compatibility problems

Xueming Shen xueming.shen at
Wed Jan 16 02:21:49 UTC 2013

zip3.0 has a flag to do the similar thing may be a compelling reason to
add such a system property, but make disabled default turns yourself
into the dark side:-)  have to explicitly turn the flag on will force the
people to think if this is something they really want to do.

Given it has been in the major releases for years, I don't think it's
possible to disable it in openjdk.


On 1/15/13 5:33 PM, Martin Buchholz wrote:
> On Tue, Jan 15, 2013 at 5:23 PM, Xueming Shen <xueming.shen at> wrote:
>> Hi Martin,
>> I would assume you are not asking for a similar flag for jar to disable the
>> zip64 support (or even something at API level) to generate "old" style
>> jar/zip
>> file for > 64k entries, but the backport of this changeset to 7u, right?
> Actually, I think y'all should do 3 things:
> - backport Kumar's bug fix to jdk7
> - introduce a system property to turn off the zip64 support.
> I am working on a patch to introduce such a system property.
> We will probably default to disabling zip64 by default, but you will
> probably find that unacceptable.  But you can default the other way.
> - fix up some remaining largefile issues in parse_manifest
> I might contribute a bit of code here as well.

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