[sqlite] Regarding creating a mem object and copying contents to it in SQLite

[Sairam Gaddam]

hello,
         I created a mem object in SQLite and copied a string value to its
member and i initialized some other members to default values manually, it
worked well but some times it shows realloc() error.
         I also found a function sqlite3VdbeMemSetStr() which will copy the
string value into new mem but even it fails sometimes.
        So what is the correct way of creating a mem object and copying a
string to its member so that SQLite will work fruitfully.Anyone know???