// TODO(gri) remove this check in favor of specialized lookup
	if pkg == nil {
		pkg = nopkg
	}
	if s := pkg.Syms[name]; s != nil {
		return s, true
	}

	s = &Sym{
		Name: name,
		Pkg:  pkg,
	}
	pkg.Syms[name] = s
	return s, false
}

func (pkg *Pkg) LookupBytes(name []byte) *Sym {
	// TODO(gri) remove this check in favor of specialized lookup
	if pkg == nil {
		pkg = nopkg
	}

// message (go/types).
func (err *error_) addf(at poser, format string, args ...interface{}) {
	err.desc = append(err.desc, errorDesc{atPos(at), err.check.sprintf(format, args...)})
}

// addAltDecl is a specialized form of addf reporting another declaration of obj.
func (err *error_) addAltDecl(obj Object) {
	if pos := obj.Pos(); pos.IsKnown() {
		// We use "other" rather than "previous" here because

func convT(typ *byte, elem *any) unsafe.Pointer

// Same as convT, for types with no pointers in them.
func convTnoptr(typ *byte, elem *any) unsafe.Pointer

// Specialized versions of convT for specific types.
// These functions take concrete types in the runtime. But they may
// be used for a wider range of types, which have the same memory
// layout as the parameter type. The compiler converts the

// the integer type used to store each numeric field
// (where timestamps are stored as the number of seconds since the Unix epoch).
//
// The table's lower portion shows specialized features of each format,
// such as supported string encodings, support for sub-second timestamps,
// or support for sparse files.
//
// The Writer currently provides no support for sparse files.
type Format int

			n = copyExpr(n, fromType, init)
		}
		fn = typecheck.LookupRuntime(fnname, fromType)
		args = []ir.Node{reflectdata.ConvIfaceSrcRType(base.Pos, conv), typecheck.NodAddr(n)}
	} else {
		// Use a specialized conversion routine that takes the type being
		// converted by value, not by pointer.
		fn = typecheck.LookupRuntime(fnname)
		var arg ir.Node
		switch {
		case fromType == argType:

		return fmt.Errorf("marshal MetaFileCollection: %v", err)
	}
	data = append(data, '\n') // makes -x output more readable

	// Create the directory for this action's objdir and
	// then write out the serialized collection
	// to a file in the directory.
	if err := sh.Mkdir(a.Objdir); err != nil {
		return err
	}
	mfpath := a.Objdir + coverage.MetaFilesFileName
	if err := sh.writeFile(mfpath, data); err != nil {

}

// bgCommand returns a go test Cmd and a post-Run flush function. The result
// will write its output to stdout and stderr. If stdout==stderr, bgCommand
// ensures Writes are serialized. The caller should call flush() after Cmd exits.
func (opts *goTest) bgCommand(t *tester, stdout, stderr io.Writer) (cmd *exec.Cmd, flush func()) {
	build, run, pkgs, testFlags, setupCmd := opts.buildArgs(t)

			err = a.Actor.Act(b, ctx, a)
			span.Done()
		}
		if a.json != nil {
			a.json.TimeDone = time.Now()
		}

		// The actions run in parallel but all the updates to the
		// shared work state are serialized through b.exec.
		b.exec.Lock()
		defer b.exec.Unlock()

		if err != nil {
			if b.AllowErrors && a.Package != nil {
				if a.Package.Error == nil {
					a.Package.Error = &load.PackageError{Err: err}