return CheckedDowncastToActualType<ValueHolder>(holder)->pointer();
    }

    ValueHolder* const new_holder = new ValueHolder(default_);
    ThreadLocalValueHolderBase* const holder_base = new_holder;
    GTEST_CHECK_POSIX_SUCCESS_(pthread_setspecific(key_, holder_base));
    return new_holder->pointer();
  }

  // A key pthreads uses for looking up per-thread values.
  const pthread_key_t key_;

	switch *FlagStrictDups {
	case 0:
		// nothing to do
	case 1, 2:
		flags |= loader.FlagStrictDups
	default:
		log.Fatalf("invalid -strictdups flag value %d", *FlagStrictDups)
	}
	ctxt.loader = loader.NewLoader(flags, &ctxt.ErrorReporter.ErrorReporter)
	ctxt.ErrorReporter.SymName = func(s loader.Sym) string {
		return ctxt.loader.SymName(s)
	}

	// ctxt.Library grows during the loop, so not a range loop.
	i := 0

	relocs []goobj.Reloc
	data   []byte
	auxs   []goobj.Aux
}

const (
	// Loader.flags
	FlagStrictDups = 1 << iota
	FlagCheckLinkname
)

func NewLoader(flags uint32, reporter *ErrorReporter) *Loader {
	nbuiltin := goobj.NBuiltin()
	extReader := &oReader{objidx: extObj}
	ldr := &Loader{