testing_prog_flags
bpf_program__set_flags(prog, testing_prog_flags());
.prog_flags = testing_prog_flags(),
spec->prog_flags = testing_prog_flags();
pflags = testing_prog_flags();
flags = bpf_program__flags(prog) | testing_prog_flags();
.prog_flags = testing_prog_flags(),
int testing_prog_flags(void);