libdwarf_compose_add_line
res = libdwarf_compose_add_line(dbg, line, &compose_error_type);
res = libdwarf_compose_add_line(dbg, line, &compose_error_type);
res = libdwarf_compose_add_line(dbg, fileindex,
res = libdwarf_compose_add_line(dbg, linenumber,
res = libdwarf_compose_add_line(dbg, constant, &compose_error_type);