// whereas the specific and destructor is per thread.
		if (x_cgo_pthread_key_created == 0 && pthread_key_create(&pthread_g, pthread_key_destructor) == 0) {
			x_cgo_pthread_key_created = 1;
		}


		// TODO(iant): For the case of a new C thread calling into Go, such
		// as when using -buildmode=c-archive, we know that Go runtime
		// initialization is complete but we do not know that all Go init

	ev[0].flags = _EV_ADD | _EV_CLEAR
	ev[0].fflags = 0
	ev[0].data = 0

	if goarch.PtrSize == 4 {
		// We only have a pointer-sized field to store into,
		// so on a 32-bit system we get no sequence protection.
		// TODO(iant): If we notice any problems we could at least
		// steal the low-order 2 bits for a tiny sequence number.
		ev[0].udata = (*byte)(unsafe.Pointer(pd))
	} else {
		tp := taggedPointerPack(unsafe.Pointer(pd), pd.fdseq.Load())

		return "", &fs.PathError{Op: "parse", Path: name, Err: errBuildIDMalformed}
	}

	off := int64(8)
	for {
		if _, err := f.Seek(off, io.SeekStart); err != nil {
			return "", err
		}

		// TODO(iant): Make a debug/ar package, and use it
		// here and in cmd/link.
		var hdr [60]byte
		if _, err := io.ReadFull(f, hdr[:]); err != nil {
			if err == io.EOF {
				// No more entries, no build ID.
				return "", nil