if err != nil {
		t.Fatal(err)
	}

	conf := Config{Importer: defaultImporter()}
	_, err = conf.Check("cmd/compile/internal/types2", files, nil)
	if err != nil {
		t.Fatal(err)
	}
}

func BenchmarkCheck(b *testing.B) {
	testenv.MustHaveGoBuild(b) // The Go command is needed for the importer to determine the locations of stdlib .a files.

	for _, p := range []string{
		filepath.Join("src", "net", "http"),

	if err != nil {
		t.Fatal(err)
	}

	conf := Config{Importer: importer.Default()}
	_, err = conf.Check("go/types", fset, files, nil)
	if err != nil {
		t.Fatal(err)
	}
}

func BenchmarkCheck(b *testing.B) {
	testenv.MustHaveGoBuild(b) // The Go command is needed for the importer to determine the locations of stdlib .a files.

	for _, p := range []string{
		"net/http",
		"go/parser",
		"go/constant",