int DB->set_re_pad(DB *db, int re_pad);
Set the padding character for short, fixed-length records for the Queue and Recno access methods.
If no pad character is specified, <space> characters (that is, ASCII 0x20) are used for padding.
The DB->set_re_pad interface may be used only to configure Berkeley DB before the DB->open interface is called.
The DB->set_re_pad function returns a non-zero error value on failure and 0 on success.
The DB->set_re_pad function may fail and return a non-zero error for the following conditions:
Called after DB->open was called.
The DB->set_re_pad function may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions. If a catastrophic error has occurred, the DB->set_re_pad function may fail and return DB_RUNRECOVERY, in which case all subsequent Berkeley DB calls will fail in the same way.
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