[sqlite] Intermittent crash in sqlite3_prepare()

[Tito Ciuro]

Hello,

When I'm running several threads at the same, I sometimes get a crash  
in sqlite3_prepare() in the marked statement below:

int sqlite3_prepare(
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared  
statement */
  const char** pzTail       /* OUT: End of parsed string */
){
  Parse sParse;
  char *zErrMsg = 0;
  int rc = SQLITE_OK;
  int i;

  /* Assert that malloc() has not failed */
  assert( !sqlite3MallocFailed() );

  assert( ppStmt );
  *ppStmt = 0;  <<<<<<<<<< the crash occurs here...


Any ideas why this is happening?

Thanks,

-- Tito