generating branch coverage data for lcov

Question

i\'m trying to use lcov for code coverage metrics, but I cannot get branches coverage to work.

Here\'s how i\'m using it:

g++ -ggdb3 --coverage src/read.         


        

Answer 1

.lcovrc files is file of settings that need to place in path of lcov file. Frankly, I didn't research much on use of this file.

You need to add additional parameter as "--rc lcov_branch_coverage=1" to lcov for all calls. In your case add this parameter to all your three calls. If you miss one, it will drop branch coverage.

Also --branch-coverage is needed for genhtml.