Man pages matching name mpi_errhandler_c2f in section 3:

MPI_Errhandler_c2f.3.en	debian 10 / lam4-dev
MPI_Errhandler_c2f.3.en	debian 11 / lam4-dev
MPI_Errhandler_c2f.3.en	debian 12 / lam4-dev