[vkucera]

Fixes errors from the following Clang-Tidy categories:

• clang-analyzer-deadcode.DeadStores
• clang-diagnostic-unused-parameter
• clang-diagnostic-unused-variable

Most errors are fixed temporarily by commenting out the unused bits and by adding a FIXME: unused comment.

The final fix is to either remove the unused bits or to fix the bugs which has to be done by someone who knows the intended behaviour.

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 573 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/staging for 47ce03f at 2026-11-07 19:32:

## sw/BUILD/O2-latest/log
CMake Error at dependencies/FindFairRoot.cmake:68 (set_target_properties):
CMake Error at /sw/slc9_x86-64/CMake/v4.1.4-6/share/cmake-4.1/Modules/FeatureSummary.cmake:499 (message):

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for 47ce03f at 2026-11-07 19:32:

## sw/BUILD/O2-latest/log
CMake Error at dependencies/FindFairRoot.cmake:68 (set_target_properties):
CMake Error at /sw/slc9_x86-64/CMake/v4.1.4-6/share/cmake-4.1/Modules/FeatureSummary.cmake:499 (message):

Full log here.

[alibuild]

Error while checking build/O2Physics/o2 for 47ce03f at 2026-11-07 19:33:

## sw/BUILD/O2-latest/log
CMake Error at dependencies/FindFairRoot.cmake:68 (set_target_properties):
CMake Error at /sw/slc9_x86-64/CMake/v4.1.4-6/share/cmake-4.1/Modules/FeatureSummary.cmake:499 (message):

Full log here.