func TestIssue65898(t *testing.T) {
	const src = `
package p
func _[A any](A) {}
`

	fset := token.NewFileSet()
	f := mustParse(fset, src)

	var conf types.Config
	pkg, err := conf.Check(pkgName(src), fset, []*ast.File{f}, nil)
	if err != nil {
		t.Fatal(err)
	}

	for _, d := range f.Decls {
		if fun, _ := d.(*ast.FuncDecl); fun != nil {

	f.fn.counterVar = ""
}

func annotate(names []string) {
	var p *Package
	if *pkgcfg != "" {
		pp := pkgconfig.PkgPath
		pn := pkgconfig.PkgName
		mp := pkgconfig.ModulePath
		mdb, err := encodemeta.NewCoverageMetaDataBuilder(pp, pn, mp)
		if err != nil {
			log.Fatalf("creating coverage meta-data builder: %v\n", err)
		}
		p = &Package{
			mdb: mdb,

			// that was type-checked directly.
			compile(t, rootDir, entry.Name(), filepath.Join(tmpdir, "testdata"), nil, filename)
			pkgName := strings.TrimSuffix(entry.Name(), ".go")
			imported := importPkg(t, "./testdata/"+pkgName, tmpdir)
			checked := checkFile(t, filename, src)

			seen := make(map[string]bool)
			for _, name := range imported.Scope().Names() {
				if !token.IsExported(name) {

	versions      map[*ast.File]string      // maps files to version strings (each file has an entry); shared with Info.FileVersions if present
	imports       []*PkgName                // list of imported packages
	dotImportMap  map[dotImportKey]*PkgName // maps dot-imported objects to the package they were dot-imported through
	recvTParamMap map[*ast.Ident]*TypeParam // maps blank receiver type parameters to their type

			// have a path.
			return "", fmt.Errorf("no path for %v", obj)
		}
	case *types.Const, // Only package-level constants have a path.
		*types.Label,   // Labels are function-local.
		*types.PkgName: // PkgNames are file-local.
		return "", fmt.Errorf("no path for %v", obj)

	case *types.Var:
		// Could be:
		// - a field (obj.IsField())
		// - a func parameter or result
		// - a local var.

		if err != nil {
			return nil, errors.Join(errs...)
		}

		files = append(files, file)
	}

	if testing.Verbose() {
		printPackageMu.Lock()
		fmt.Println("package", files[0].PkgName.Value)
		for _, filename := range filenames {
			fmt.Println("\t", filename)
		}
		printPackageMu.Unlock()
	}

	// Typecheck package files.
	var errs []error
	conf := Config{

	// Hand the Go files to the compiler en masse.
	// For packages containing assembly, this writes go_asm.h, which
	// the assembly files will need.
	pkgName := pkg
	if strings.HasPrefix(pkg, "cmd/") && strings.Count(pkg, "/") == 1 {
		pkgName = "main"
	}
	b := pathf("%s/_go_.a", workdir)
	clean = append(clean, b)
	if !ispackcmd {
		link = append(link, b)
	} else {
		archive = b
	}

	pkg, err := typecheck(src, conf, info)
	if err != nil {
		panic(err) // so we don't need to pass *testing.T
	}
	return pkg
}

// pkgName extracts the package name from src, which must contain a package header.
func pkgName(src string) string {
	const kw = "package "
	if i := strings.Index(src, kw); i >= 0 {
		after := src[i+len(kw):]
		n := len(after)

		// go.codereview/patch tests.
		// For package names containing those words, use test.test.exe
		// instead of pkgname.test.exe.
		// Note that this file name is only used in the Go command's
		// temporary directory. If the -c or other flags are
		// given, the code below will still use pkgname.test.exe.
		// There are two user-visible effects of this change.
		// First, you can actually run 'go test' in directories that

func A(func(any), ...any) {}
func B[T any](T)          {}

func _() {
	A(B, nil // syntax error: missing ',' before newline in argument list
}
`
	fset := token.NewFileSet()
	f, err := parser.ParseFile(fset, pkgName(src), src, 0)
	if err == nil {
		t.Fatal("expected syntax error")
	}

	var conf Config
	conf.Check(f.Name.Name, fset, []*ast.File{f}, nil) // must not panic
}

func TestIssue61938(t *testing.T) {