_ "unsafe" // for linkname
)

var errNilPtr = errors.New("destination pointer is nil") // embedded in descriptive error

func describeNamedValue(nv *driver.NamedValue) string {
	if len(nv.Name) == 0 {
		return fmt.Sprintf("$%d", nv.Ordinal)
	}
	return fmt.Sprintf("with name %q", nv.Name)
}

func validateNamedValueName(name string) error {
	if len(name) == 0 {
		return nil
	}
	r, _ := utf8.DecodeRuneInString(name)

	for i, s := range toTest {
		if v := ldr.SymValue(s); v != 0 {
			t.Errorf("ldr.Value(%d): expected 0 got %d\n", s, v)
		}
		nv := int64(i + 101)
		ldr.SetSymValue(s, nv)
		if v := ldr.SymValue(s); v != nv {
			t.Errorf("ldr.SetValue(%d,%d): expected %d got %d\n", s, nv, nv, v)
		}
	}

	// Check/set alignment
	es3al := ldr.SymAlign(es3)
	if es3al != 0 {

		bugLogIf(ctx, errInvalidArgument)
		return errInvalidArgument
	}

	nv := make(textproto.MIMEHeader, len(v))
	for k, kv := range v {
		// Canonicalize all headers, to remove any duplicates.
		nv[http.CanonicalHeaderKey(k)] = kv
	}

	// Save all supported headers.
	for _, supportedHeader := range supportedHeaders {
		value, ok := nv[http.CanonicalHeaderKey(supportedHeader)]
		if ok {

				err = msgp.WrapError(err, "Object")
				return
			}
		case "no":
			z.NumObjects, err = dc.ReadUint64()
			if err != nil {
				err = msgp.WrapError(err, "NumObjects")
				return
			}
		case "nv":
			z.NumVersions, err = dc.ReadUint64()
			if err != nil {
				err = msgp.WrapError(err, "NumVersions")
				return
			}
		case "bs":
			z.Bytes, err = dc.ReadUint64()
			if err != nil {

				heap.Push(priq, v)
			}
		}

		// Produce the schedule. Pick the highest priority scheduleable value,
		// add it to the schedule, add any of its uses that are now scheduleable
		// to the queue, and repeat.
		nv := len(b.Values)
		b.Values = b.Values[:0]
		for priq.Len() > 0 {
			// Schedule the next schedulable value in priority order.
			v := heap.Pop(priq).(*Value)
			b.Values = append(b.Values, v)

		if inv.Patch > -1 {
			if r := compareVersion(pversion.Patch, inv.Patch); r != 0 {
				return r
			}
		}
	}
	return 0
}

func compareVersion(ov, nv int) int {
	if ov == nv {
		return 0
	}
	if ov < nv {
		return -1
	}
	return 1
}

var NodeTypes = [...]NodeType{SidecarProxy, Router, Waypoint, Ztunnel}

	appendError := func(err, err2 error) error {
		if err == nil {
			return err2
		} else if err2 == nil {
			return err
		}
		return multierror.Append(err, err2)
	}

	for _, nv := range vs {
		switch t := nv.(type) {
		case Validation:
			v.Err = appendError(v.Err, t.Err)
			v.Warning = appendError(v.Warning, t.Warning)
		default:
			v.Err = appendError(v.Err, t)
		}
	}
	return v
}

	ReplicationState ReplicationState `msg:"rs"` // Internal replication state to be passed back in ObjectInfo

	Data []byte `msg:"d,allownil"` // optionally carries object data

	NumVersions      int       `msg:"nv"`
	SuccessorModTime time.Time `msg:"smt"`

	Fresh bool `msg:"fr"` // indicates this is a first time call to write FileInfo.

	// Position of this version or object in a multi-object delete call,

		}
	}
	if len(args) == arrow+3 {
		nv, err = parseVersion(verb, ns, &args[arrow+2], fix)
		if err != nil {
			return nil, wrapError(err)
		}
		if IsDirectoryPath(ns) {
			return nil, errorf("replacement module directory path %q cannot have version", ns)
		}
	}
	return &Replace{
		Old:    module.Version{Path: s, Version: v},
		New:    module.Version{Path: ns, Version: nv},
		Syntax: line,
	}, nil
}

}

var armCondCode = []string{
	".EQ",
	".NE",
	".CS",
	".CC",
	".MI",
	".PL",
	".VS",
	".VC",
	".HI",
	".LS",
	".GE",
	".LT",
	".GT",
	".LE",
	"",
	".NV",
}

/* ARM scond byte */
const (
	C_SCOND     = (1 << 4) - 1
	C_SBIT      = 1 << 4
	C_PBIT      = 1 << 5
	C_WBIT      = 1 << 6
	C_FBIT      = 1 << 7
	C_UBIT      = 1 << 7
	C_SCOND_XOR = 14
)