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Changes to src/btree.c.

  8634   8634       }
  8635   8635       oldCell = findCell(pPage, idx);
  8636   8636       if( !pPage->leaf ){
  8637   8637         memcpy(newCell, oldCell, 4);
  8638   8638       }
  8639   8639       rc = clearCell(pPage, oldCell, &info);
  8640   8640       if( info.nSize==szNew && info.nLocal==info.nPayload 
  8641         -     && (!ISAUTOVACUUM || szNew<pPage->minLocal)
         8641  +     && (!REQUIRE_PTRMAP || szNew<pPage->minLocal)
  8642   8642       ){
  8643   8643         /* Overwrite the old cell with the new if they are the same size.
  8644   8644         ** We could also try to do this if the old cell is smaller, then add
  8645   8645         ** the leftover space to the free list.  But experiments show that
  8646   8646         ** doing that is no faster then skipping this optimization and just
  8647   8647         ** calling dropCell() and insertCell(). 
  8648   8648         **

Changes to test/concurrent4.test.

    80     80     do_test 2.$tn.4 {
    81     81       sql2 {
    82     82         PRAGMA integrity_check;
    83     83       }
    84     84     } {ok}
    85     85   }
    86     86   
           87  +reset_db
           88  +do_execsql_test 3.1 {
           89  +  PRAGMA page_size = 1024;
           90  +  PRAGMA journal_mode = wal;
           91  +  CREATE TABLE t2(x);
           92  +  INSERT INTO t2 VALUES(randomblob(5000));
           93  +  CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
           94  +  INSERT INTO t1 VALUES(25, randomblob(104));
           95  +  DELETE FROM t2;
           96  +} {wal}
           97  +
           98  +do_execsql_test 3.2 {
           99  +  BEGIN CONCURRENT;
          100  +    REPLACE INTO t1 VALUES(25, randomblob(1117));
          101  +  COMMIT;
          102  +} {}
    87    103   
    88    104   finish_test
    89    105