[jacobdenobel]

Work package E02: FlatFile separator bug

Branch: wp/E02-flatfile-separator
Status: ready for review

Done

• step 1: failing tests (meta data on: run and first property glued, e.g. "01"; meta data off passes) in tests/cpp/logger/test_flatfile.cpp
• step 3 (review): CRLF restored in flatfile.hpp, changelog entry moved to Unreleased, iohinspector sentence removed.
• step 2: cache_meta_data() now ends with sep_ (include/ioh/logger/flatfile.hpp); CHANGELOG.md entry under 0.4.0 / Fixed; Python test in tests/python/test_logger.py checks field counts (not run: no built ioh module here). test_flatfile: 4 tests pass (Debug build).

Next step

None. Controller turns this file into the PR body.

Decisions

• Test target: test_flatfile (cmake -DIOH_TEST_PER_FILE=ON -DCMAKE_BUILD_TYPE=Debug), build dir build-e02 (excluded via .git/info/exclude). Run: build-e02/tests/test_flatfile Warning ".*" 99999 (the arguments are needed). Release (NDEBUG) builds crash in SetUp (clutchlog no-op logger() returns nothing, a separate pre-existing issue, not fixed here).

• Submodules fmt and googletest were initialised in the worktree (git submodule update --init).

• The changelog entry does not mention iohinspector; add the cross-reference ("iohinspector's reader flags these files") once that reader ships.

Open questions / Blocked

• none
• Other variants checked: no meta data (empty titles) was correct; store_positions was correct (sep before x columns); header is correct. Nothing else in the repo parses FlatFile output.
• Same bug exists in all earlier versions (cache_meta_data unchanged since the logger was added).

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Work package from the IOHanalyzer rebuild plan (plan/ in IOHprofiler/ioh-web). Review and merge are done by a person.

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