QA Report: -DICC_USE_ZLIB=ON/OFF

[xsscx]

Maintainer Summary

2026-06-25 19:22:30 UTC

Task: Test & Report to Maintainers on the Status of -DICC_USE_ZLIB=ON/OFF

Synopsis

It was found that the use of -DICC_USE_ZLIB=ON should be a Default Setting but there are implementation issues to review.

Repro w/o Compression

git clone https://github.com/InternationalColorConsortium/iccDEV.git
cd iccDEV/Build/Cmake
git branch && echo "---" && git log --oneline -1
cmake --preset linux-clang-sanitizers -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
wget https://github.com/xsscx/fuzz/raw/refs/heads/master/graphics/icc/desc-zipUtf8TextType.icc
iccDumpProfile -v 100 desc-zipUtf8TextType.icc ALL 

QA Results w/o Compression

Type: utf8ZipType ('zut8' = 7A757438)
NonCompliant! - profileDescriptionTag utf8ZipType: Invalid tag type (Might be critical!).
Warning! - profileDescriptionTag: - Zip compression not supported by CMM - unable to validate text compression.

Repro w/ Compression

git clone https://github.com/InternationalColorConsortium/iccDEV.git
cd iccDEV/Build/Cmake
git branch && echo "---" && git log --oneline -1
cmake --preset linux-clang-sanitizers -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DICC_USE_ZLIB=ON
cmake --build . --config Debug --  -j32
wget https://github.com/xsscx/fuzz/raw/refs/heads/master/graphics/icc/desc-zipUtf8TextType.icc
iccDumpProfile -v 100 desc-zipUtf8TextType.icc ALL 

QA Results w/ Compression

Type: utf8ZipType ('zut8' = 7A757438)
NonCompliant! - profileDescriptionTag utf8ZipType: Invalid tag type (Might be critical!).

Developer Handoff

1. This issue needs Developer Review for intended & expected outputs
2. It appears that -DICC_USE_ZLIB=ON should be a CMake Default

[github-actions]

Thanks for opening this issue.

The triage bot added initial labels based on the template and issue text. Maintainers may adjust labels as they review scope, reproduction details, CTest/regression needs, and security impact.

If you have questions, contact a listed Maintainer.

[ChrisCoxArt]

CIccProfile::IsTypeValid knows very little about compressed types.