AT_RENAME_EXCHANGE
if ((v->a_flags & ~(AT_RENAME_NOREPLACE | AT_RENAME_EXCHANGE)) != 0) {
exchange = (v->a_flags & AT_RENAME_EXCHANGE) != 0;
if ((flags & ~(AT_RENAME_NOREPLACE | AT_RENAME_EXCHANGE)) != 0)
if ((flags & (AT_RENAME_NOREPLACE | AT_RENAME_EXCHANGE)) ==
(AT_RENAME_NOREPLACE | AT_RENAME_EXCHANGE))
if ((flags & AT_RENAME_EXCHANGE) != 0) {
#define RENAME_EXCHANGE AT_RENAME_EXCHANGE