// so there's no point in worrying about them. Bail out if that
		// changes.
		if sect.Nreloc != 0 {
			return nil, nil, nil
		}

		data, err := sect.Data()
		if err != nil {
			return nil, nil, err
		}

		compressed, contents, err := machoCompressSection(data)
		if err != nil {
			return nil, nil, err
		}

		newSec := *sect
		newSec.Offset = uint32(dwarfseg.Offset) + uint32(buf.Len())

	}()
	wg.Wait()
	save := savesrc || savebase

	if errsrc != nil {
		return nil, nil, nil, nil, false, fmt.Errorf("problem fetching source profiles: %v", errsrc)
	}
	if errbase != nil {
		return nil, nil, nil, nil, false, fmt.Errorf("problem fetching base profiles: %v,", errbase)
	}
	if countsrc == 0 {
		return nil, nil, nil, nil, false, fmt.Errorf("failed to fetch any source profiles")
	}

	if f.baseErr != nil {
		return nil, f.baseErr
	}
	return nil, nil
}

func (f *file) Close() error {
	return nil
}

func (f *file) Symbols(r *regexp.Regexp, addr uint64) ([]*plugin.Sym, error) {
	// Get from nm a list of symbols sorted by address.
	cmd := exec.Command(f.b.nm, "-n", f.name)
	out, err := cmd.Output()
	if err != nil {
		return nil, fmt.Errorf("%v: %v", cmd.Args, err)

func EndPos(n Node) Pos {
	for m := n; ; {
		switch n := m.(type) {
		case nil:
			panic("nil node")

		// packages
		case *File:
			return n.EOF

		// declarations
		case *ImportDecl:
			m = n.Path
		case *ConstDecl:
			if n.Values != nil {
				m = n.Values
				continue
			}
			if n.Type != nil {
				m = n.Type
				continue
			}
			if l := len(n.NameList); l > 0 {

	if skip(t) {
		return nil
	}
	op := t.Op.Copy(fn, skip)
	first := t.First.Copy(fn, skip)
	second := t.Second.Copy(fn, skip)
	third := t.Third.Copy(fn, skip)
	if op == nil && first == nil && second == nil && third == nil {
		return fn(t)
	}
	if op == nil {
		op = t.Op
	}
	if first == nil {
		first = t.First
	}
	if second == nil {
		second = t.Second
	}

	if relative {
		if err := applyFocus(p, numLabelUnits, cfg, o.UI); err != nil {
			return nil, nil, err
		}
	}
	ropt, err := reportOptions(p, numLabelUnits, cfg)
	if err != nil {
		return nil, nil, err
	}
	ropt.OutputFormat = c.format
	if len(cmd) == 2 {
		s, err := regexp.Compile(cmd[1])
		if err != nil {
			return nil, nil, fmt.Errorf("parsing argument regexp %s: %v", cmd[1], err)
		}
		ropt.Symbol = s
	}

//
//	cmdOut  cmdErr  Result
//	""      nil     print nothing, return nil
//	!=""    nil     print output, return nil
//	""      !=nil   print nothing, return cmdErr (later printed)
//	!=""    !=nil   print nothing, ignore err, return output as error (later printed)
//
// reportCmd returns a non-nil error if and only if cmdErr != nil. It assumes

	return &typeWriter{buf, make(map[Type]bool), qf, nil, nil, true, false, false}
}

func newTypeHasher(buf *bytes.Buffer, ctxt *Context) *typeWriter {
	assert(ctxt != nil)
	return &typeWriter{buf, make(map[Type]bool), nil, ctxt, nil, false, false, false}
}

func (w *typeWriter) byte(b byte) {
	if w.ctxt != nil {
		if b == ' ' {
			b = '#'
		}
		w.buf.WriteByte(b)
		return
	}

	tparams *TypeParamList // type parameters, or nil
	targs   *TypeList      // type arguments, or nil
	fromRHS Type           // RHS of type alias declaration; may be an alias
	actual  Type           // actual (aliased) type; never an alias
}

// NewAlias creates a new Alias type with the given type name and rhs.
// rhs must not be nil.
func NewAlias(obj *TypeName, rhs Type) *Alias {
	alias := (*Checker)(nil).newAlias(obj, rhs)

		}()

	case black:
		assert(obj.Type() != nil)
		return

	default:
		// Color values other than white or black are considered grey.
		fallthrough

	case grey:
		// We have a (possibly invalid) cycle.
		// In the existing code, this is marked by a non-nil type
		// for the object except for constants and variables whose
		// type may be non-nil (known), or nil if it depends on the