llvm-project/llvm/test/tools/llvm-cov/Inputs/test_-a.h.gcov

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