llvm-project/llvm/test/tools/llvm-cov/Inputs/test_no_gcda.h.gcov

        -:    0:Source:./test.h
        -:    0:Graph:test.gcno
        -:    0:Data:-
        -:    0:Runs:0
        -:    0:Programs:0
    #####:    1:struct A {
        -:    2:  virtual void B();
        -:    3:};