RFR: 8313765: Invalid CEN header (invalid zip64 extra data field size) [v6]

Tue Aug 15 22:22:10 UTC 2023

On Tue, 15 Aug 2023 21:38:41 GMT, Volker Simonis <simonis at openjdk.org> wrote:

> Did you create that zip file manually or was it created by a tool and if by a tool than which one? I think we must differentiate here between functional compatibility with a tool like "zip", compatibility with a specification and the compatibility with existing zip files and zip files created by common tools.

That was created manually and then repacked by the zip.

> The latter is important and required in order to avoid regressions (and I think that's exactly what we're fixing with this PR). Compatibility with a specification is great as long as it doesn't collide with the previous point. Behavioral compatibility with a tool like "zip" is the least important in this list and I think as long as the file in question is not an artifact commonly created by popular tools it is fine to behave different for edge cases.

That file is accepted by zip, by the latest JDK8u382, by the JDK20 GA, and rejected by the 20.0.2. That is a regression in the latest update of JDK11+ which we trying to solve here.

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PR Comment: https://git.openjdk.org/jdk/pull/15273#issuecomment-1679696095