Update bundled zlib from 1.3.1 to 1.3.2

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Grigory Filatov

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Feb 27, 2026, 4:17:40 AM (3 days ago) Feb 27
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Hello,

I have prepared a patch to update the bundled zlib library in Harbour (master branch) from version 1.3.1 to upstream version 1.3.2.

Upstream base:
zlib 1.3.2 (official release)

Scope of changes:

  • Replaced zlib 1.3.1 sources with upstream 1.3.2

  • Adjusted Harbour-specific build integration where necessary

  • No modifications to Harbour core outside zlib integration

  • No API/interface changes introduced

  • No behavioural changes beyond upstream fixes

Build and test status:

  • Clean rebuild of Harbour master branch successful

  • Tested on:

    • Windows 64-bit (MinGW)

    • Windows 32-bit (Borland BCC)

  • No regressions observed in components using zlib

  • Static build configuration verified

The patch was generated against the current master branch (clean tree).
Attached file: zlib.diff

Please let me know if:

  • You prefer this submitted as a GitHub Pull Request instead

  • Any adjustments are required to comply with repository guidelines

Thank you for reviewing.

Best regards,

Grigory Filatov

zlib.diff
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