used := make(map[string]bool)
	for _, f := range dt.Field {
		ident[f.Name] = f.Name
		used[f.Name] = true
	}

	if !*godefs {
		for cid, goid := range ident {
			if token.Lookup(goid).IsKeyword() {
				// Avoid keyword
				goid = "_" + goid

				// Also avoid existing fields
				for _, exist := used[goid]; exist; _, exist = used[goid] {
					goid = "_" + goid
				}

pkg go/constant, func Make(interface{}) Value
pkg go/constant, func Val(Value) interface{}
pkg go/token, func IsExported(string) bool
pkg go/token, func IsIdentifier(string) bool
pkg go/token, func IsKeyword(string) bool
pkg go/types, func CheckExpr(*token.FileSet, *Package, token.Pos, ast.Expr, *Info) error
pkg log, func Writer() io.Writer
pkg log/syslog (netbsd-arm64-cgo), const LOG_ALERT = 1

pkg go/token, method (*Position) IsValid() bool
pkg go/token, method (Pos) IsValid() bool
pkg go/token, method (Position) String() string
pkg go/token, method (Token) IsKeyword() bool
pkg go/token, method (Token) IsLiteral() bool
pkg go/token, method (Token) IsOperator() bool
pkg go/token, method (Token) Precedence() int
pkg go/token, method (Token) String() string