SQLite

    }
    pIter->iOff = iOff;
  }

  return pIter->bEof;
}

static void fts5DlidxIterInitFromData(
  Fts5Index *p,                   /* Fts5 Backend to iterate within */
  int bRev,                       /* True for ORDER BY ASC */

  int iLeafPgno,                  /* Leaf page number dlidx is for */
  Fts5Data *pDlidx,               /* Leaf index data */
  Fts5DlidxIter **ppIter          /* OUT: Populated iterator */
){
  Fts5DlidxIter *pIter = *ppIter;

  if( pIter==0 ){
    *ppIter = pIter = (Fts5DlidxIter*)fts5IdxMalloc(p, sizeof(Fts5DlidxIter));
    if( pIter==0 ){ 
      fts5DataRelease(pDlidx);
      return;
    }




  }else{
    memset(pIter, 0, sizeof(Fts5DlidxIter));
  }

  pIter->pData = pDlidx;
  pIter->iLeafPgno = iLeafPgno;
  if( bRev==0 ){
    fts5DlidxIterFirst(pIter);
  }else{
    fts5DlidxIterLast(pIter);
  }
}

static void fts5DlidxIterInit(
  Fts5Index *p,                   /* Fts5 Backend to iterate within */
  int bRev,                       /* True for ORDER BY ASC */
  int iIdx, int iSegid,           /* Segment iSegid within index iIdx */
  int iLeafPgno,                  /* Leaf page number to load dlidx for */
  Fts5DlidxIter **ppIter          /* OUT: Populated iterator */
){
  Fts5Data *pDlidx;
  pDlidx = fts5DataRead(p, FTS5_DOCLIST_IDX_ROWID(iIdx, iSegid, iLeafPgno));
  if( pDlidx==0 ) return;
  fts5DlidxIterInitFromData(p, bRev, iLeafPgno, pDlidx, ppIter);
}

/*
** Free a doclist-index iterator object allocated by fts5DlidxIterInit().
*/
static void fts5DlidxIterFree(Fts5DlidxIter *pIter){
  if( pIter ){

        int nPos;
        iOff += fts5GetPoslistSize(&pLeaf->p[iOff], &nPos, &bDummy);
        iOff += nPos;
      }
    }
  }

  fts5DlidxIterInit(p, bRev, iIdx, iSeg, pIter->iTermLeafPgno, &pIter->pDlidx);
}

/*
** Initialize the object pIter to point to term pTerm/nTerm within segment
** pSeg, index iIdx. If there is no such term in the index, the iterator
** is set to EOF.
**

  int iSegid,                     /* Segment id to load from */
  int iLeaf                       /* Load doclist-index for this leaf */
){
  Fts5DlidxIter *pDlidx = 0;
  i64 cksum1 = 13;
  i64 cksum2 = 13;

  for(fts5DlidxIterInit(p, 0, iIdx, iSegid, iLeaf, &pDlidx);
      fts5DlidxIterEof(p, pDlidx)==0;
      fts5DlidxIterNext(pDlidx)
  ){
    assert( pDlidx->iLeafPgno>iLeaf );
    cksum1 = (cksum1 ^ ( (i64)(pDlidx->iLeafPgno) << 32 ));
    cksum1 = (cksum1 ^ pDlidx->iRowid);
  }
  fts5DlidxIterFree(pDlidx);
  pDlidx = 0;

  for(fts5DlidxIterInit(p, 1, iIdx, iSegid, iLeaf, &pDlidx);
      fts5DlidxIterEof(p, pDlidx)==0;
      fts5DlidxIterPrev(pDlidx)
  ){
    assert( pDlidx->iLeafPgno>iLeaf );
    cksum2 = (cksum2 ^ ( (i64)(pDlidx->iLeafPgno) << 32 ));
    cksum2 = (cksum2 ^ pDlidx->iRowid);
  }

    if( iter.bDlidx ){
      Fts5DlidxIter *pDlidx = 0;  /* For iterating through doclist index */
      int iPrevLeaf = iter.iLeaf;
      int iSegid = pSeg->iSegid;
      int iPg;
      i64 iKey;

      for(fts5DlidxIterInit(p, 0, iIdx, iSegid, iter.iLeaf, &pDlidx);
          fts5DlidxIterEof(p, pDlidx)==0;
          fts5DlidxIterNext(pDlidx)
      ){

        /* Check any rowid-less pages that occur before the current leaf. */
        for(iPg=iPrevLeaf+1; iPg<pDlidx->iLeafPgno; iPg++){
          iKey = FTS5_SEGMENT_ROWID(iIdx, iSegid, 0, iPg);

#   1: CREATE VIRTUAL TABLE
#   2: INSERT statement
#   3: DELETE statement
#   4: MATCH expressions
#
#

if 1 {

faultsim_save_and_close
do_faultsim_test 1 -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { CREATE VIRTUAL TABLE t1 USING fts5(a, b, prefix='1, 2, 3') }
} -test {
  faultsim_test_result {0 {}} 

  execsql { 
    SELECT rowid FROM x1 WHERE x1 MATCH 'x*'
  }
} -test {
  faultsim_test_result [list 0 $::res]
}

}

#-------------------------------------------------------------------------
# Segment promotion.
#
do_test 9.0 {
  reset_db
  db func rnddoc fts5_rnddoc
  execsql {
    CREATE VIRTUAL TABLE s2 USING fts5(x);
    INSERT INTO s2(s2, rank) VALUES('pgsz', 32);
    INSERT INTO s2(s2, rank) VALUES('automerge', 0);
  }

  for {set i 1} {$i <= 16} {incr i} {
    execsql { INSERT INTO s2 VALUES(rnddoc(5)) }
  }
  fts5_level_segs s2
} {0 1}

faultsim_save_and_close

do_faultsim_test 9.1 -faults oom-* -prep {
  faultsim_restore_and_reopen
  db func rnddoc fts5_rnddoc
} -body {
  execsql { INSERT INTO s2 VALUES(rnddoc(160)) }
} -test {
  faultsim_test_result {0 {}}
  if {$testrc==0} {
    set ls [fts5_level_segs s2]
    if {$ls != "2 0"} { error "fts5_level_segs says {$ls}" }
  }
}



finish_test