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Overview
Comment:If a database becomes corrupted such that an index is out of sync with its table, make sure the corruption is detected and reported back. Do not assume that indices always contain rowids for valid table rows.
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SHA1:83395a3d24f18170fc068d9e644291678694c3f0
User & Date: drh 2010-07-30 18:40:55
References
2010-08-01
22:25 Fixed ticket [168d0f71]: Segfault while reading database with a corrupt index plus 3 other changes artifact: 184435bf user: drh
Context
2010-08-01
22:41
Fix a typo in an error message of the TCL interface. check-in: 8eadd7b8 user: drh tags: trunk
2010-07-30
18:40
If a database becomes corrupted such that an index is out of sync with its table, make sure the corruption is detected and reported back. Do not assume that indices always contain rowids for valid table rows. check-in: 83395a3d user: drh tags: trunk
16:54
Fix typos in comments. No code or logic changes. check-in: 15c294ca user: drh tags: trunk
Changes
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Changes to src/vdbeaux.c.

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#ifdef SQLITE_TEST
    extern int sqlite3_search_count;
#endif
    assert( p->isTable );
    rc = sqlite3BtreeMovetoUnpacked(p->pCursor, 0, p->movetoTarget, 0, &res);
    if( rc ) return rc;
    p->lastRowid = p->movetoTarget;

    p->rowidIsValid = ALWAYS(res==0) ?1:0;
    if( NEVER(res<0) ){
      rc = sqlite3BtreeNext(p->pCursor, &res);
      if( rc ) return rc;
    }
#ifdef SQLITE_TEST
    sqlite3_search_count++;
#endif
    p->deferredMoveto = 0;
    p->cacheStatus = CACHE_STALE;
  }else if( ALWAYS(p->pCursor) ){
    int hasMoved;







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#ifdef SQLITE_TEST
    extern int sqlite3_search_count;
#endif
    assert( p->isTable );
    rc = sqlite3BtreeMovetoUnpacked(p->pCursor, 0, p->movetoTarget, 0, &res);
    if( rc ) return rc;
    p->lastRowid = p->movetoTarget;
    if( res!=0 ) return SQLITE_CORRUPT_BKPT;
    p->rowidIsValid = 1;




#ifdef SQLITE_TEST
    sqlite3_search_count++;
#endif
    p->deferredMoveto = 0;
    p->cacheStatus = CACHE_STALE;
  }else if( ALWAYS(p->pCursor) ){
    int hasMoved;