testenv.MustHaveGoBuild(t)

	for i, test := range testObjects {
		t.Run(fmt.Sprint(i), func(t *testing.T) {
			src := "package p; " + test.src
			conf := Config{Error: func(error) {}, Importer: defaultImporter(), EnableAlias: test.alias}
			pkg, err := typecheck(src, &conf, nil)
			if err != nil {
				t.Fatalf("%s: %s", src, err)
			}

			names := strings.Split(test.obj, ".")

		`struct { *Missing }`,
		`struct { unsafe.Pointer }`,
		`struct { P }`,
		`struct { *I }`,
		`struct { a int; b Missing; *Missing }`,
	} {
		f := mustParse(prefix + src)

		conf := Config{Importer: defaultImporter(), Error: func(err error) {}}
		info := &Info{Types: make(map[syntax.Expr]TypeAndValue)}
		_, err := conf.Check(f.PkgName.Value, []*syntax.File{f}, info)
		if err != nil {
			if _, ok := err.(Error); !ok {

	"errors"
	"fmt"
	"go/build"
	"internal/testenv"
	"os"
	"path/filepath"
	"runtime"
	"strings"
	"sync"
	"testing"
	"time"

	. "cmd/compile/internal/types2"
)

var stdLibImporter = defaultImporter()

func TestStdlib(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping in short mode")
	}

	testenv.MustHaveGoBuild(t)

	// Collect non-test files.
	dirFiles := make(map[string][]string)

		t.Errorf("--- %s:", pkgName)
		for _, err := range errlist {
			t.Error(err)
		}
	}

	// set up typechecker
	var conf Config
	conf.Trace = manual && testing.Verbose()
	conf.Importer = defaultImporter()
	conf.Error = func(err error) {
		if *haltOnError {
			defer panic(err)
		}
		if listErrors {
			t.Error(err)
			return
		}
		errlist = append(errlist, err)
	}

}

func typecheck(src string, conf *Config, info *Info) (*Package, error) {
	f := mustParse(src)
	if conf == nil {
		conf = &Config{
			Error:    func(err error) {}, // collect all errors
			Importer: defaultImporter(),
		}
	}
	return conf.Check(f.PkgName.Value, []*syntax.File{f}, info)
}

func mustTypecheck(src string, conf *Config, info *Info) *Package {
	pkg, err := typecheck(src, conf, info)
	if err != nil {