RFR: 8378631: Update Zlib Data Compression Library to Version 1.3.2

[Jaikiran Pai]

On Wed, 25 Feb 2026 12:56:37 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

> Can I please get a review of this change which upgrades JDK's in-tree zlib code from 1.3.1 to the recently released zlib 1.3.2 version?
> 
> As noted in https://bugs.openjdk.org/browse/JDK-8378631, then changes between the upstream zlib 1.3.1 and 1.3.2 are available here https://github.com/madler/zlib/compare/v1.3.1...v1.3.2.

Thank you all for the reviews.

tier1, tier2 and tier3 testing completed without any issues. tier4 through tier8 testing is progressing fine without any related issues (and given the progress it has made, I don't expect issues related to this change). The failure in the GitHub actions job in this PR is a known issue that got addressed recently in https://bugs.openjdk.org/browse/JDK-8378641.

I'll go ahead and integrate this now.

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PR Comment: https://git.openjdk.org/jdk/pull/29916#issuecomment-3966104194