Branch coverage not shown

[bilke]

Bug report

I create a coverage report with ctest (in a dashboard client script) and gcov and send it to my cdash instance.

Expected Behavior

Besides line coverage also the branch coverage should be shown in CDash as described in e.g. https://www.kitware.com/additional-coverage-features-in-cdash/.

Actual Behavior

Branch coverage is not shown.

CDash Version

4.6.0

Additional Information

I also found no branch coverage on other projects hosted on open.cdash.org. Even the in the CMake project the build nightly-cmake-fedora43_gcc_gcov does only show line coverage.

Is it currently not working or is there something missing from the ctest setups?

Thanks! Lars