963__wt_txn_set_timestamp(WT_SESSION_IMPL *session, const char *cfg[])
 964{
 965        WT_CONFIG_ITEM cval;
 966        WT_DECL_RET;
 967        WT_TXN *txn = &session->txn;
 968        wt_timestamp_t ts;
 969
 970        WT_TRET(__wt_txn_context_check(session, true));
 971
 972        /* Look for round_to_oldest configuration. */
    CID 112697 (#1 of 1): Unused value (UNUSED_VALUE)returned_value: Assigning value from __wt_config_gets_def(session, cfg, "round_to_oldest", 0, &cval) to ret here, but that stored value is overwritten before it can be used.
 973        ret = __wt_config_gets_def(session, cfg, "round_to_oldest", 0, &cval);
 974        if (cval.val)
 975                F_SET(txn, WT_TXN_TS_ROUND_READ);
 976
 977        /* Look for a commit timestamp. */
    value_overwrite: Overwriting previous write to ret with value from __wt_config_gets_def(session, cfg, "commit_timestamp", 0, &cval).
 978        ret = __wt_config_gets_def(session, cfg, "commit_timestamp", 0, &cval);