SQLite

showshm$(TEXE):	$(TOP)/tool/showshm.c
	$(LTLINK) -o $@ $(TOP)/tool/showshm.c

changeset$(TEXE):	$(TOP)/ext/session/changeset.c sqlite3.lo
	$(LTLINK) -o $@ $(TOP)/ext/session/changeset.c sqlite3.lo $(TLIBS)

changesetfuzz$(TEXE):	$(TOP)/ext/session/changesetfuzz.c sqlite3.lo
	$(LTLINK) -o $@ $(TOP)/ext/session/changesetfuzz.c sqlite3.lo $(TLIBS)

rollback-test$(TEXE):	$(TOP)/tool/rollback-test.c sqlite3.lo
	$(LTLINK) -o $@ $(TOP)/tool/rollback-test.c sqlite3.lo $(TLIBS)

atrc$(TEXX): $(TOP)/test/atrc.c sqlite3.lo
	$(LTLINK) -o $@ $(TOP)/test/atrc.c sqlite3.lo $(TLIBS)

LogEst$(TEXE):	$(TOP)/tool/logest.c sqlite3.h

	$(LTLINK) $(NO_WARN)	$(TOP)\tool\showshm.c /link $(LDFLAGS) $(LTLINKOPTS)

changeset.exe:	$(TOP)\ext\session\changeset.c $(SQLITE3C) $(SQLITE3H)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION \
		-DSQLITE_ENABLE_SESSION=1 -DSQLITE_ENABLE_PREUPDATE_HOOK=1 \
		$(TOP)\ext\session\changeset.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

changesetfuzz.exe:	$(TOP)\ext\session\changesetfuzz.c $(SQLITE3C) $(SQLITE3H)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION \
		-DSQLITE_ENABLE_SESSION=1 -DSQLITE_ENABLE_PREUPDATE_HOOK=1 \
		$(TOP)\ext\session\changesetfuzz.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

fts3view.exe:	$(TOP)\ext\fts3\tool\fts3view.c $(SQLITE3C) $(SQLITE3H)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION \
		$(TOP)\ext\fts3\tool\fts3view.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

rollback-test.exe:	$(TOP)\tool\rollback-test.c $(SQLITE3C) $(SQLITE3H)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION \
		$(TOP)\tool\rollback-test.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

    0,                            /* xCommit - commit transaction */
    0,                            /* xRollback - rollback transaction */
    0,                            /* xFindFunction - function overloading */
    0,                            /* xRename - rename the table */
    0,                            /* xSavepoint */
    0,                            /* xRelease */
    0,                            /* xRollbackTo */
    0,                            /* xShadowName */
  };

  return sqlite3_create_module(p->dbv, "expert", &expertModule, (void*)p);
}
/*
** End of virtual table implementation.
*************************************************************************/

  UNUSED_PARAMETER(iSavepoint);
  assert( p->inTransaction );
  assert( p->mxSavepoint >= iSavepoint );
  TESTONLY( p->mxSavepoint = iSavepoint );
  sqlite3Fts3PendingTermsClear(p);
  return SQLITE_OK;
}

/*
** Return true if zName is the extension on one of the shadow tables used
** by this module.
*/
static int fts3ShadowName(const char *zName){
  static const char *azName[] = {
    "content", "docsize", "segdir", "segments", "stat", 
  };
  unsigned int i;
  for(i=0; i<sizeof(azName)/sizeof(azName[0]); i++){
    if( sqlite3_stricmp(zName, azName[i])==0 ) return 1;
  }
  return 0;
}

static const sqlite3_module fts3Module = {
  /* iVersion      */ 3,
  /* xCreate       */ fts3CreateMethod,
  /* xConnect      */ fts3ConnectMethod,
  /* xBestIndex    */ fts3BestIndexMethod,
  /* xDisconnect   */ fts3DisconnectMethod,
  /* xDestroy      */ fts3DestroyMethod,
  /* xOpen         */ fts3OpenMethod,
  /* xClose        */ fts3CloseMethod,

  /* xCommit       */ fts3CommitMethod,
  /* xRollback     */ fts3RollbackMethod,
  /* xFindFunction */ fts3FindFunctionMethod,
  /* xRename */       fts3RenameMethod,
  /* xSavepoint    */ fts3SavepointMethod,
  /* xRelease      */ fts3ReleaseMethod,
  /* xRollbackTo   */ fts3RollbackToMethod,
  /* xShadowName   */ fts3ShadowName,
};

/*
** This function is registered as the module destructor (called when an
** FTS3 enabled database connection is closed). It frees the memory
** allocated for the tokenizer hash table.
*/

     0,                           /* xSync         */
     0,                           /* xCommit       */
     0,                           /* xRollback     */
     0,                           /* xFindFunction */
     0,                           /* xRename       */
     0,                           /* xSavepoint    */
     0,                           /* xRelease      */
     0,                           /* xRollbackTo   */
     0                            /* xShadowName   */
  };
  int rc;                         /* Return code */

  rc = sqlite3_create_module(db, "fts4aux", &fts3aux_module, 0);
  return rc;
}

     0,                           /* xSync         */
     0,                           /* xCommit       */
     0,                           /* xRollback     */
     0,                           /* xFindFunction */
     0,                           /* xRename       */
     0,                           /* xSavepoint    */
     0,                           /* xRelease      */
     0,                           /* xRollbackTo   */
     0                            /* xShadowName   */
  };
  int rc;                         /* Return code */

  rc = sqlite3_create_module(db, "fts4term", &fts3term_module, 0);
  return rc;
}

     0,                           /* xSync         */
     0,                           /* xCommit       */
     0,                           /* xRollback     */
     0,                           /* xFindFunction */
     0,                           /* xRename       */
     0,                           /* xSavepoint    */
     0,                           /* xRelease      */
     0,                           /* xRollbackTo   */
     0                            /* xShadowName   */
  };
  int rc;                         /* Return code */

  rc = sqlite3_create_module(db, "fts3tokenize", &fts3tok_module, (void*)pHash);
  return rc;
}

  int nArg,                       /* Number of args */
  sqlite3_value **apUnused        /* Function arguments */
){
  assert( nArg==0 );
  UNUSED_PARAM2(nArg, apUnused);
  sqlite3_result_text(pCtx, "--FTS5-SOURCE-ID--", -1, SQLITE_TRANSIENT);
}

/*
** Return true if zName is the extension on one of the shadow tables used
** by this module.
*/
static int fts5ShadowName(const char *zName){
  static const char *azName[] = {
    "config", "content", "data", "docsize", "idx"
  };
  unsigned int i;
  for(i=0; i<sizeof(azName)/sizeof(azName[0]); i++){
    if( sqlite3_stricmp(zName, azName[i])==0 ) return 1;
  }
  return 0;
}

static int fts5Init(sqlite3 *db){
  static const sqlite3_module fts5Mod = {
    /* iVersion      */ 3,
    /* xCreate       */ fts5CreateMethod,
    /* xConnect      */ fts5ConnectMethod,
    /* xBestIndex    */ fts5BestIndexMethod,
    /* xDisconnect   */ fts5DisconnectMethod,
    /* xDestroy      */ fts5DestroyMethod,
    /* xOpen         */ fts5OpenMethod,
    /* xClose        */ fts5CloseMethod,

    /* xCommit       */ fts5CommitMethod,
    /* xRollback     */ fts5RollbackMethod,
    /* xFindFunction */ fts5FindFunctionMethod,
    /* xRename       */ fts5RenameMethod,
    /* xSavepoint    */ fts5SavepointMethod,
    /* xRelease      */ fts5ReleaseMethod,
    /* xRollbackTo   */ fts5RollbackToMethod,
    /* xShadowName   */ fts5ShadowName
  };

  int rc;
  Fts5Global *pGlobal = 0;

  pGlobal = (Fts5Global*)sqlite3_malloc(sizeof(Fts5Global));
  if( pGlobal==0 ){

     0,                           /* xSync         */
     0,                           /* xCommit       */
     0,                           /* xRollback     */
     0,                           /* xFindFunction */
     0,                           /* xRename       */
     0,                           /* xSavepoint    */
     0,                           /* xRelease      */
     0,                           /* xRollbackTo   */
     0                            /* xShadowName   */
  };
  int rc;                         /* Return code */

  rc = sqlite3_create_module(db, "fts5tokenize", &fts5tok_module, (void*)pApi);
  return rc;
}

    /* xCommit       */ 0,
    /* xRollback     */ 0,
    /* xFindFunction */ 0,
    /* xRename       */ 0,
    /* xSavepoint    */ 0,
    /* xRelease      */ 0,
    /* xRollbackTo   */ 0,
    /* xShadowName   */ 0
  };
  void *p = (void*)pGlobal;

  return sqlite3_create_module_v2(db, "fts5vocab", &fts5Vocab, p, 0);
}

  }
  set nRow
} {200}

do_execsql_test 15.0 {
  INSERT INTO t1(t1) VALUES('integrity-check');
}
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 15.1 {
  UPDATE t1_content SET c1 = 'xyz xyz xyz xyz xyz abc' WHERE rowid = 1;
}
do_catchsql_test 15.2 {
  INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {database disk image is malformed}}

  do_execsql_test 4.$tn.3 {
    INSERT INTO ft3(ft3) VALUES('integrity-check');
  }
}

finish_test

  fts5_level_segs t1
} {1}
db_save

do_execsql_test 1.2 { INSERT INTO t1(t1) VALUES('integrity-check') }
set segid [lindex [fts5_level_segids t1] 0]

sqlite3_db_config db DEFENSIVE 0
do_test 1.3 {
  execsql {
    DELETE FROM t1_data WHERE rowid = fts5_rowid('segment', $segid, 4);
  }
  catchsql { INSERT INTO t1(t1) VALUES('integrity-check') }
} {1 {database disk image is malformed}}

do_test 1.4 {
  db_restore_and_reopen
  sqlite3_db_config db DEFENSIVE 0
  execsql {
    UPDATE t1_data set block = X'00000000' || substr(block, 5) WHERE
    rowid = fts5_rowid('segment', $segid, 4);
  }
  catchsql { INSERT INTO t1(t1) VALUES('integrity-check') }
} {1 {database disk image is malformed}}

  INSERT INTO t3 VALUES('three o');
  INSERT INTO t3 VALUES('four e');
  INSERT INTO t3 VALUES('five o');
}
do_execsql_test 3.1 {
  SELECT * FROM t3 WHERE t3 MATCH 'o'
} {{one o} {three o} {five o}}
sqlite3_db_config db DEFENSIVE 0
do_catchsql_test 3.1 {
  DELETE FROM t3_content WHERE rowid = 3;
  SELECT * FROM t3 WHERE t3 MATCH 'o';
} {1 {database disk image is malformed}}

finish_test

# Also tested is that "MATCH 'x*'" does not crash and sometimes reports
# corruption. It may not report the db as corrupt because truncating the
# final leaf to some sizes may create a valid leaf page.
#
set lrowid [db one {SELECT max(rowid) FROM t1_data WHERE (rowid & $mask)=0}] 
set nbyte [db one {SELECT length(block) FROM t1_data WHERE rowid=$lrowid}]
set all [db eval {SELECT rowid FROM t1}]
sqlite3_db_config db DEFENSIVE 0
for {set i [expr $nbyte-2]} {$i>=0} {incr i -1} {
  do_execsql_test 2.$i.1 {
    BEGIN;
      UPDATE t1_data SET block = substr(block, 1, $i) WHERE rowid=$lrowid;
  }

  do_catchsql_test 2.$i.2 {

    execsql ROLLBACK
  }
}

#--------------------------------------------------------------------
reset_db
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 6.1 {
  CREATE VIRTUAL TABLE x5 USING fts5(tt);
  INSERT INTO x5 VALUES('a');
  INSERT INTO x5 VALUES('a a');
  INSERT INTO x5 VALUES('a a a');
  INSERT INTO x5 VALUES('a a a a');

  set rowid [db one {
    SELECT max(rowid) FROM t1_data WHERE ((rowid>>31) & 0x0F)==1
  }]
  set L [db one {SELECT length(block) FROM t1_data WHERE rowid = $rowid}]
  set {} {}
} {} 

sqlite3_db_config db DEFENSIVE 0
for {set i 0} {$i < $L} {incr i} {
  do_test 1.2.$i {
    catchsql {
      BEGIN;
      UPDATE t1_data SET block = substr(block, 1, $i) WHERE id = $rowid;
      INSERT INTO t1(t1) VALUES('integrity-check');
    }

#-------------------------------------------------------------------------
# Test that missing leaf pages are recognized as corruption.
#
reset_db
do_test 3.0 { create_t1 } {}
sqlite3_db_config db DEFENSIVE 0

do_execsql_test 3.1 {
  SELECT count(*) FROM t1_data;
} {105}

proc do_3_test {tn} {
  set i 0

do_3_test 3.10

#-------------------------------------------------------------------------
# Test that segments that end unexpectedly are identified as corruption.
#
reset_db
sqlite3_db_config db DEFENSIVE 0
do_test 4.0 {
  execsql { 
    CREATE VIRTUAL TABLE t1 USING fts5(x);
    INSERT INTO t1(t1, rank) VALUES('pgsz', 32);
  }
  for {set i 0} {$i < 100} {incr i} {
    set rnd [expr int(rand() * 100)]

  set end [lindex $var end]
  if {$end<=$i} break
  lset var end [expr $end - $i]
  set struct [binary format c* $var]

  db close
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0

  db eval {
    BEGIN;
    UPDATE t1_data SET block = $struct WHERE id=10;
  }
  do_test 4.1.$i {
    incr nErr [catch { db eval { SELECT rowid FROM t1 WHERE t1 MATCH 'x*' } }]

    catch { db eval ROLLBACK }
  }
}

#------------------------------------------------------------------------
#
reset_db
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 6.1.0 {
  CREATE VIRTUAL TABLE t1 USING fts5(a);
  INSERT INTO t1 VALUES('bbbbb ccccc');
  SELECT quote(block) FROM t1_data WHERE rowid>100;
} {X'000000180630626262626201020201056363636363010203040A'}
do_execsql_test 6.1.1 {
  UPDATE t1_data SET block = 
  X'000000180630626262626201020201056161616161010203040A'
  WHERE rowid>100;
}
do_catchsql_test 6.1.2 {
  INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {database disk image is malformed}}

#-------
reset_db
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 6.2.0 {
  CREATE VIRTUAL TABLE t1 USING fts5(a);
  INSERT INTO t1(t1, rank) VALUES('pgsz', 32);
  INSERT INTO t1 VALUES('aa bb cc dd ee');
  SELECT pgno, quote(term) FROM t1_idx;
} {2 X'' 4 X'3064'}
do_execsql_test 6.2.1 {
  UPDATE t1_idx SET term = X'3065' WHERE pgno=4;
}
do_catchsql_test 6.2.2 {
  INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {database disk image is malformed}}

#-------
reset_db
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 6.3.0 {
  CREATE VIRTUAL TABLE t1 USING fts5(a);
  INSERT INTO t1 VALUES('abc abcdef abcdefghi');
  SELECT quote(block) FROM t1_data WHERE id>100;
}    {X'0000001C043061626301020204036465660102030703676869010204040808'}
do_execsql_test 6.3.1 {
  BEGIN;

    INSERT INTO t5 VALUES( rnddoc(10000) );
    INSERT INTO t5 VALUES( rnddoc(10000) );
    INSERT INTO t5 VALUES( rnddoc(10000) );
    INSERT INTO t5(t5) VALUES('optimize');
  }
} {}

sqlite3_db_config db DEFENSIVE 0
do_test 7.1 {
  foreach i [db eval { SELECT rowid FROM t5_data WHERE rowid>100 }] {
    db eval BEGIN  
    db eval {DELETE FROM t5_data WHERE rowid = $i}
    set r [catchsql { INSERT INTO t5(t5) VALUES('integrity-check')} ]
    if {$r != "1 {database disk image is malformed}"} { error $r }
    db eval ROLLBACK  

#
reset_db
do_execsql_test 8.1 {
  CREATE VIRTUAL TABLE t1 USING fts5(x, y);
  INSERT INTO t1 VALUES('one', 'two');
}

sqlite3_db_config db DEFENSIVE 0
do_test 9.1.1 {
  set    blob "12345678"    ;# cookie
  append blob "0105"        ;# 1 level, total of 5 segments
  append blob "06"          ;# write counter
  append blob "0002"        ;# first level has 0 segments merging, 2 other.
  append blob "450108"      ;# first segment
  execsql "REPLACE INTO t1_data VALUES(10, X'$blob')"

  SELECT * FROM x2('a + b');
} {1 {fts5: phrase queries are not supported (detail!=full)}}

do_catchsql_test 3.3 {
  SELECT * FROM x2('^a');
} {1 {fts5: phrase queries are not supported (detail!=full)}}
finish_test

  INSERT INTO aa(zz) VALUES('a');
  SELECT length(sz) FROM aa_docsize;
} {1 1 1 1 1}
do_execsql_test 4.1 { 
  INSERT INTO aa(aa) VALUES('integrity-check'); 
}

sqlite3_db_config db DEFENSIVE 0
do_catchsql_test 4.2 { 
  BEGIN;
    UPDATE aa_docsize SET sz = X'44' WHERE rowid = 3;
    INSERT INTO aa(aa) VALUES('integrity-check'); 
} {1 {database disk image is malformed}}

do_catchsql_test 4.3 { 

}

do_execsql_test 5.1 {
  SELECT rowid FROM ttt('word') WHERE rowid BETWEEN 30 AND 40 ORDER BY rank;
} {30 31 32 33 34 35 36 37 38 39 40}

finish_test

  INSERT INTO f1(f1) VALUES('rebuild');
} {}

do_execsql_test 1.4 {
  INSERT INTO f1(f1) VALUES('integrity-check');
} {}

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 1.5 {
  DELETE FROM f1_data;
} {}

do_catchsql_test 1.6 {
  INSERT INTO f1(f1) VALUES('integrity-check');
} {1 {database disk image is malformed}}

  DELETE FROM x1 WHERE (rowid%2);
}

set res [db one {SELECT count(*) FROM x1_data}]
do_execsql_test 2.3 {
  SELECT count(fts5_decode(rowid, block)) FROM x1_data;
} $res
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 2.4 {
  UPDATE x1_data SET block = X'';
  SELECT count(fts5_decode(rowid, block)) FROM x1_data;
} $res

do_execsql_test 2.5 {
  INSERT INTO x1(x1, rank) VALUES('pgsz', 1024);

  SELECT * FROM t1_config WHERE k='version'
} {version 4}

do_execsql_test 1.3 {
  SELECT rowid FROM t1 WHERE t1 MATCH 'a';
} {1}

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 1.4 {
  UPDATE t1_config set v=5 WHERE k='version';
}

do_test 1.5 {
  db close
  sqlite3 db test.db
  catchsql { SELECT * FROM t1 WHERE t1 MATCH 'a' }
} {1 {invalid fts5 file format (found 5, expected 4) - run 'rebuild'}}

do_test 1.6 {
  db close
  sqlite3 db test.db
  catchsql { INSERT INTO t1 VALUES('x y z') }
} {1 {invalid fts5 file format (found 5, expected 4) - run 'rebuild'}}

do_test 1.7 {
  sqlite3_db_config db DEFENSIVE 0
  execsql { DELETE FROM t1_config WHERE k='version' }
  db close
  sqlite3 db test.db
  catchsql { SELECT * FROM t1 WHERE t1 MATCH 'a' }
} {1 {invalid fts5 file format (found 0, expected 4) - run 'rebuild'}}


finish_test

  i a 1 1 i b 1 1 i c 1 1
}]
if {[detail_is_none]} { set resc [row_to_col $resr] }

do_execsql_test 8.1.1 { SELECT * FROM x1_r; } $resr
do_execsql_test 8.1.2 { SELECT * FROM x1_c } $resc

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 8.2 {
  PRAGMA writable_schema = 1;
  UPDATE sqlite_master 
  SET sql = 'CREATE VIRTUAL TABLE x1 USING fts5(a, detail=%DETAIL%)'
  WHERE name = 'x1';
}
db close

  set e2 [db eval { EXPLAIN SELECT * FROM rrr ORDER BY term DESC }]
  expr [lsearch $e2 SorterSort]<0
} 0



finish_test

do_execsql_test 3.5 {
  DELETE FROM t1;
  SELECT * FROM v1;
} {
}

finish_test

  0,                      /* xSync */
  0,                      /* xCommit */
  0,                      /* xRollback */
  0,                      /* xFindMethod */
  0,                      /* xRename */
  0,                      /* xSavepoint */
  0,                      /* xRelease */
  0,                      /* xRollbackTo */
  0                       /* xShadowName */
};

#endif /* SQLITE_OMIT_VIRTUALTABLE */

/*
** Register the amatch virtual table
*/

    0,                           /* xCommit */
    0,                           /* xRollback */
    0,                           /* xFindMethod */
    0,                           /* xRename */
    0,                           /* xSavepoint */
    0,                           /* xRelease */
    0,                           /* xRollbackTo */
    0                            /* xShadowName */
  };
  return sqlite3_create_module(db, "sqlite_btreeinfo", &binfo_module, 0);
}

#ifdef _WIN32
__declspec(dllexport)
#endif

  0,                      /* xSync */
  0,                      /* xCommit */
  0,                      /* xRollback */
  0,                      /* xFindMethod */
  0,                      /* xRename */
  0,                      /* xSavepoint */
  0,                      /* xRelease */
  0,                      /* xRollbackTo */
  0                       /* xShadowName */
};

#endif /* SQLITE_OMIT_VIRTUALTABLE */

/*
** Register the closure virtual table
*/

  0,                         /* xSync */
  0,                         /* xCommit */
  0,                         /* xRollback */
  0,                         /* xFindMethod */
  0,                         /* xRename */
  0,                         /* xSavepoint */
  0,                         /* xRelease */
  0,                         /* xRollbackTo */
  0                          /* xShadowName */
};

#endif /* SQLITE_OMIT_VIRTUALTABLE */

int sqlite3CompletionVtabInit(sqlite3 *db){
  int rc = SQLITE_OK;
#ifndef SQLITE_OMIT_VIRTUALTABLE

  0,                         /* xCommit */
  0,                         /* xRollback */
  0,                         /* xFindMethod */
  0,                         /* xRename */
  0,                         /* xSavepoint */
  0,                         /* xRelease */
  0,                         /* xRollbackTo */
  0,                         /* xShadowName */
};

#endif /* SQLITE_OMIT_VIRTUALTABLE */

int sqlite3ExplainVtabInit(sqlite3 *db){
  int rc = SQLITE_OK;
#ifndef SQLITE_OMIT_VIRTUALTABLE

    0,                         /* xSync */
    0,                         /* xCommit */
    0,                         /* xRollback */
    0,                         /* xFindMethod */
    0,                         /* xRename */
    0,                         /* xSavepoint */
    0,                         /* xRelease */
    0,                         /* xRollbackTo */
    0,                         /* xShadowName */
  };

  int rc = sqlite3_create_module(db, "fsdir", &fsdirModule, 0);
  return rc;
}
#else         /* SQLITE_OMIT_VIRTUALTABLE */
# define fsdirRegister(x) SQLITE_OK

  0,                         /* xSync */
  0,                         /* xCommit */
  0,                         /* xRollback */
  0,                         /* xFindMethod */
  0,                         /* xRename */
  0,                         /* xSavepoint */
  0,                         /* xRelease */
  0,                         /* xRollbackTo */
  0                          /* xShadowName */
};

/* The methods of the json_tree virtual table. */
static sqlite3_module jsonTreeModule = {
  0,                         /* iVersion */
  0,                         /* xCreate */
  jsonEachConnect,           /* xConnect */

  0,                         /* xSync */
  0,                         /* xCommit */
  0,                         /* xRollback */
  0,                         /* xFindMethod */
  0,                         /* xRename */
  0,                         /* xSavepoint */
  0,                         /* xRelease */
  0,                         /* xRollbackTo */
  0                          /* xShadowName */
};
#endif /* SQLITE_OMIT_VIRTUALTABLE */

/****************************************************************************
** The following routines are the only publically visible identifiers in this
** file.  Call the following routines in order to register the various SQL
** functions and the virtual table implemented by this file.

  0,                         /* xCommit */
  0,                         /* xRollback */
  0,                         /* xFindMethod */
  0,                         /* xRename */
  0,                         /* xSavepoint */
  0,                         /* xRelease */
  0,                         /* xRollbackTo */
  0,                         /* xShadowName */
};

#endif /* SQLITE_OMIT_VIRTUALTABLE */

int sqlite3MemstatVtabInit(sqlite3 *db){
  int rc = SQLITE_OK;
#ifndef SQLITE_OMIT_VIRTUALTABLE

  0,                         /* xCommit */
  0,                         /* xRollback */
  0,                         /* xFindMethod */
  0,                         /* xRename */
  0,                         /* xSavepoint */
  0,                         /* xRelease */
  0,                         /* xRollbackTo */
  0,                         /* xShadowName */
};

#endif /* SQLITE_OMIT_VIRTUALTABLE */

int sqlite3StmtVtabInit(sqlite3 *db){
  int rc = SQLITE_OK;
#ifndef SQLITE_OMIT_VIRTUALTABLE

  /* xSync       */ 0,
  /* xCommit     */ 0,
  /* xRollback   */ 0,
  /* xFindMethod */ 0,
  /* xRename     */ 0,
  /* xSavepoint  */ 0,
  /* xRelease    */ 0,
  /* xRollbackTo */ 0,
  /* xShadowName */ 0
};


#ifdef _WIN32
__declspec(dllexport)
#endif
int sqlite3_templatevtab_init(

    0,                            /* xSync */
    0,                            /* xCommit */
    0,                            /* xRollback */
    0,                            /* xFindMethod */
    0,                            /* xRename */
    0,                            /* xSavepoint */
    0,                            /* xRelease */
    0,                            /* xRollbackTo */
    0                             /* xShadowName */
  };
  int rc;

  rc = sqlite3_create_module(db, "unionvtab", &unionModule, 0);
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_module(db, "swarmvtab", &unionModule, (void*)db);
  }

  0,                         /* xCommit */
  0,                         /* xRollback */
  0,                         /* xFindMethod */
  0,                         /* xRename */
  0,                         /* xSavepoint */
  0,                         /* xRelease */
  0,                         /* xRollbackTo */
  0,                         /* xShadowName */
};

#ifdef _WIN32
__declspec(dllexport)
#endif
int sqlite3_vtablog_init(
  sqlite3 *db, 

  catch { db close }
  eval $destroy_vfs
}


finish_test

    INSERT INTO data_t3 VALUES(1, 'abc', '-6.0', 0);
  }
  list [catch { apply_rbu $rbu } msg] $msg
} {0 SQLITE_DONE}


finish_test

  rbu step
} {SQLITE_ERROR}
do_test 4.7.2 {
  list [catch {rbu close} msg] $msg
} {1 {SQLITE_ERROR - rbu_state mismatch error}}

finish_test

  do_test 2.$tn.6 {
    list [sql1 {PRAGMA data_version}] [sql2 {PRAGMA data_version}]
  } [list $V1 $V2]

}

finish_test

do_execsql_test 1.4 {
  SELECT count(*) FROM t1 WHERE
  a == ( (b<<6) + (c<<5) + (d<<4) + (e<<3) + (f<<2) + (g<<1) + (h<<0) )
} {128}


finish_test

  } {4 5 6 50 50 50}

  integrity_check $tn.4
}


finish_test

do_test 5.3 {
  expr {[file size test.db-wal] > (1024 * 1200)}
} 1

do_test 6.1 { sqlite3rbu_internal_test } {}

finish_test

    db close
  }
}


finish_test

  do_execsql_test 1.$nStep.5 {
    SELECT * FROM t1;
  } {1 t1 5 hello}
}


finish_test

    2 2 d
    3 1 e
    3 2 f
  }
}

finish_test

  {}   2 2
  _iii 3 three-III
}
integrity_check 1.3.3


finish_test

  }
  
  integrity_check 2.$tn.4
}


finish_test

do_test 2.2 {
  list [catch { rbu close } msg] $msg
} {1 {SQLITE_ERROR - cannot update wal mode database}}


finish_test

} {1 2 3 4 5 6 7 8 9}

db close
sqlite3_shutdown
test_sqlite3_log 
sqlite3_initialize
finish_test

  
  integrity_check 3.$tn.4
}



finish_test

  }
  rbu close
  db eval { SELECT * FROM t1 }
} {a one 1 b two 2 c three 3}

#forcedelete testrbu.db
finish_test

for {set nPre 0} {$nPre < $rbu_num_steps} {incr nPre} {
  for {set is 1} {$is <= ($rbu_num_steps - $nPre)} {incr is} {
    do_rbu_crash_test 2.pre=$nPre.step=$is $nPre $is
  }
}

finish_test

      sqlite3rbu rbu test.db test.db2
    }
    rbu close
  }
}

finish_test

    db close
    db2 close
  }
}


finish_test

} {SQLITE_DONE}

do_execsql_test 1.4 {
  SELECT * FROM t1 
} [list 1 $bigA 2 $bigB]

finish_test

        }
      }
    }
  }
}

finish_test

      {1 {SQLITE_NOMEM - out of memory}} 
}




finish_test

  } -test {
    eval [list faultsim_test_result {0 SQLITE_OK} {*}$::errlist]
  }

}

finish_test

    if {$rc!="ok"} { error "Got $rc instead of ok!" }
  }
}



finish_test

    INSERT INTO data_ft VALUES('7 8 9', 1, 'x');
  } } msg] $msg]
} {1 {SQLITE_ERROR - SQL logic error]}}



finish_test

    sqlite3rbu_destroy_vfs myrbu
  }

}


finish_test

      do_sp_test 5.$tn.$bReopen.$tn2.1 $bReopen test.db rbu.db $R($tn)
    }
  }
}


finish_test

      PRAGMA integrity_check;
    }
  } {60 ok}
  db2 close
}

finish_test

do_execsql_test 1.5 {
  SELECT * FROM t1;
  SELECT * FROM t2;
} {1 one 1 3 3 3 4 4 4 1 one 1 3 3 3 4 4 4}

finish_test

    1 1 1 2 2 2 3 3 3 4 4 4
    5 5 5 6 6 6 7 7 7 8 8 8
    9 9 9
  }
}

finish_test

  setup_databases
  unset -nocomplain ::A
  step_rbu_cachesize test.db test.db2 1000 10 1400000
} {1 SQLITE_FULL}
do_test 1.6.2 { info commands rbu } {}

finish_test

  while {[rbu step]=="SQLITE_OK"} {}
  list [catch { rbu close } msg] $msg
} {0 SQLITE_DONE}

catch { db close }
finish_test

  sqlite3rbu_vacuum rbu test.db test.db2
  while {[rbu step]!="SQLITE_DONE"} { rbu step }
  rbu close
  execsql { PRAGMA integrity_check }
} {ok}

finish_test

}
do_index_check_test 7.3 t7i3 {
  {} 1,1 {} 3,3
}
do_index_check_test 7.4 t7i4 {
  {} 1,1 {} 3,3
}

    return SQLITE_INDEX_CONSTRAINT_FUNCTION+1;
  }
  return 0;
}


static sqlite3_module geopolyModule = {
  3,                          /* iVersion */
  geopolyCreate,              /* xCreate - create a table */
  geopolyConnect,             /* xConnect - connect to an existing table */
  geopolyBestIndex,           /* xBestIndex - Determine search strategy */
  rtreeDisconnect,            /* xDisconnect - Disconnect from a table */
  rtreeDestroy,               /* xDestroy - Drop a table */
  rtreeOpen,                  /* xOpen - open a cursor */
  rtreeClose,                 /* xClose - close a cursor */

  rtreeEndTransaction,        /* xCommit - commit transaction */
  rtreeEndTransaction,        /* xRollback - rollback transaction */
  geopolyFindFunction,        /* xFindFunction - function overloading */
  rtreeRename,                /* xRename - rename the table */
  rtreeSavepoint,             /* xSavepoint */
  0,                          /* xRelease */
  0,                          /* xRollbackTo */
  rtreeShadowName             /* xShadowName */
};

static int sqlite3_geopoly_init(sqlite3 *db){
  int rc = SQLITE_OK;
  static const struct {
    void (*xFunc)(sqlite3_context*,int,sqlite3_value**);
    signed char nArg;

    }
    sqlite3_free(zSql);
  }

  return rc;
}


/*
** Return true if zName is the extension on one of the shadow tables used
** by this module.
*/
static int rtreeShadowName(const char *zName){
  static const char *azName[] = {
    "node", "parent", "rowid"
  };
  unsigned int i;
  for(i=0; i<sizeof(azName)/sizeof(azName[0]); i++){
    if( sqlite3_stricmp(zName, azName[i])==0 ) return 1;
  }
  return 0;
}

static sqlite3_module rtreeModule = {
  3,                          /* iVersion */
  rtreeCreate,                /* xCreate - create a table */
  rtreeConnect,               /* xConnect - connect to an existing table */
  rtreeBestIndex,             /* xBestIndex - Determine search strategy */
  rtreeDisconnect,            /* xDisconnect - Disconnect from a table */
  rtreeDestroy,               /* xDestroy - Drop a table */
  rtreeOpen,                  /* xOpen - open a cursor */
  rtreeClose,                 /* xClose - close a cursor */

  rtreeEndTransaction,        /* xCommit - commit transaction */
  rtreeEndTransaction,        /* xRollback - rollback transaction */
  0,                          /* xFindFunction - function overloading */
  rtreeRename,                /* xRename - rename the table */
  rtreeSavepoint,             /* xSavepoint */
  0,                          /* xRelease */
  0,                          /* xRollbackTo */
  rtreeShadowName             /* xShadowName */
};

static int rtreeSqlInit(
  Rtree *pRtree, 
  sqlite3 *db, 
  const char *zDb, 
  const char *zPrefix, 

# The following block of tests - rtree8-2.* - test a couple of database
# corruption cases. In this case things are not corrupted at the b-tree
# level, but the contents of the various tables used internally by an
# r-tree table are inconsistent.
#
populate_t1 50
do_execsql_test rtree8-2.1.1 { SELECT max(nodeno) FROM t1_node } {5}
sqlite3_db_config db DEFENSIVE 0
do_execsql_test rtree8-2.1.2 { DELETE FROM t1_node } {}
for {set i 1} {$i <= 50} {incr i} {
  do_catchsql_test rtree8-2.1.3.$i { 
    SELECT * FROM t1 WHERE id = $i 
  } {1 {database disk image is malformed}}
}
do_catchsql_test rtree8-2.1.4 { 
  SELECT * FROM t1
} {1 {database disk image is malformed}}
do_catchsql_test rtree8-2.1.5 { 
  DELETE FROM t1
} {1 {database disk image is malformed}}

do_execsql_test rtree8-2.1.6 { 
  DROP TABLE t1;
  CREATE VIRTUAL TABLE t1 USING rtree_i32(id, x1, x2);
} {}


populate_t1 50
sqlite3_db_config db DEFENSIVE 0
do_execsql_test rtree8-2.2.1 {
  DELETE FROM t1_parent
} {}
do_catchsql_test rtree8-2.2.2 {
  DELETE FROM t1 WHERE id=25
} {1 {database disk image is malformed}}
do_execsql_test rtree8-2.2.3 { 

  execsql BEGIN
  for {set i 0} {$i < 500} {incr i} {
    set x2 [expr $i+5]
    set y2 [expr $i+5]
    execsql { INSERT INTO t1 VALUES($i, $i, $x2, $i, $y2) }
  }
  execsql COMMIT
  sqlite3_db_config db DEFENSIVE 0
}

proc truncate_node {nodeno nTrunc} {
  set blob [db one {SELECT data FROM t1_node WHERE nodeno=$nodeno}]
  if {$nTrunc<0} {set nTrunc "end-$nTrunc"}
  set blob [string range $blob 0 $nTrunc]
  db eval { UPDATE t1_node SET data = $blob WHERE nodeno=$nodeno }

#-------------------------------------------------------------------------
# Truncated blobs in the _node table.
#
create_t1
populate_t1
sqlite3 db test.db
sqlite3_db_config db DEFENSIVE 0
do_execsql_test rtreeA-7.100 { 
  UPDATE t1_node SET data=x'' WHERE rowid=1;
} {}
do_catchsql_test rtreeA-7.110 {
  SELECT * FROM t1 WHERE x1>0 AND x1<100 AND x2>0 AND x2<100;
} {1 {undersize RTree blobs in "t1_node"}}
do_test rtreeA-7.120 {
  sqlite3_extended_errcode db
} {SQLITE_CORRUPT_VTAB}


finish_test

    CREATE VIRTUAL TABLE r1 USING $module (id, x1, x2, y1, y2);
    INSERT INTO r1 VALUES(1,  5, 5, 5, 5);  --  3
    INSERT INTO r1 VALUES(2,  6, 6, 6, 6);  --  9
    INSERT INTO r1 VALUES(3,  7, 7, 7, 7);  -- 15
    INSERT INTO r1 VALUES(4,  8, 8, 8, 8);  -- 21
    INSERT INTO r1 VALUES(5,  9, 9, 9, 9);  -- 27
  "
  sqlite3_db_config db DEFENSIVE 0
}

setup_simple_db
do_execsql_test 2.1 { 
  SELECT rtreecheck('r1') 
} {ok}

do_execsql_test 3.1 { 
  CREATE VIRTUAL TABLE r2 USING rtree_i32(id, x1, x2);
  INSERT INTO r2 VALUES(2, -1*(1<<31), -1*(1<<31)+5);
  SELECT rtreecheck('r2') 
} {ok}

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 3.2 {
  BEGIN;
    UPDATE r2_node SET data = X'123456';
    SELECT rtreecheck('r2')!="ok";
} {1}

do_execsql_test 3.3 {

do_execsql_test 5.0 {
  CREATE VIRTUAL TABLE r3 USING rtree_i32(id, x1, x2, y1, y2);
  WITH x(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM x WHERE i<1000
  )
  INSERT INTO r3 SELECT i, i, i, i, i FROM x;
}
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 5.1 {
  BEGIN;
    UPDATE r3_node SET data = set_int32(data, 3, 5000);
    UPDATE r3_node SET data = set_int32(data, 4, 5000);
    SELECT rtreecheck('r3')=='ok'
} 0
do_execsql_test 5.2 {
  ROLLBACK;
  BEGIN;
    UPDATE r3_node SET data = set_int32(data, 3, 0);
    UPDATE r3_node SET data = set_int32(data, 4, 0);
    SELECT rtreecheck('r3')=='ok'
} 0

finish_test

/*
** 2018-11-01
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains code to implement the "changesetfuzz" command 
** line utility for fuzzing changeset blobs without corrupting them.
*/


/************************************************************************
** USAGE:
**
** This program may be invoked in two ways:
**
**   changesetfuzz INPUT
**   changesetfuzz INPUT SEED N
**
** Argument INPUT must be the name of a file containing a binary changeset.
** In the first form above, this program outputs a human-readable version
** of the same changeset. This is chiefly for debugging.
**
** As well as changesets, this program can also dump and fuzz patchsets.
** The term "changeset" is used for both patchsets and changesets from this
** point on.
**
** In the second form, arguments SEED and N must both be integers. In this
** case, this program writes N binary changesets to disk. Each output
** changeset is a slightly modified - "fuzzed" - version of the input. 
** The output changesets are written to files name "INPUT-$n", where $n is 
** an integer between 0 and N-1, inclusive. Output changesets are always
** well-formed. Parameter SEED is used to seed the PRNG - any two 
** invocations of this program with the same SEED and input changeset create
** the same N output changesets.
**
** The ways in which an input changeset may be fuzzed are as follows:
**
**   1. Any two values within the changeset may be exchanged.
**
**   2. Any TEXT, BLOB, INTEGER or REAL value within the changeset 
**      may have a single bit of its content flipped.
**
**   3. Any value within a changeset may be replaced by a pseudo-randomly
**      generated value.
**
** The above operations never set a PRIMARY KEY column to NULL. Nor do they
** set any value to "undefined", or replace any "undefined" value with
** another. Any such operation risks producing a changeset that is not 
** well-formed.
**
**   4. A single change may be duplicated.
**
**   5. A single change may be removed, so long as this does not mean that
**      there are zero changes following a table-header within the changeset.
**
**   6. A single change may have its type (INSERT, DELETE, UPDATE) changed.
**      If an INSERT is changed to a DELETE (or vice versa), the type is
**      simply changed - no other modifications are required. If an INSERT
**      or DELETE is changed to an UPDATE, then the single record is duplicated
**      (as both the old.* and new.* records of the new UPDATE change). If an
**      UPDATE is changed to a DELETE or INSERT, the new.* record is discarded
**      and any "undefined" fields replaced with pseudo-randomly generated
**      values.
**
**   7. An UPDATE change that modifies N table columns may be modified so
**      that it updates N-1 columns, so long as (N>1).
**
**   8. The "indirect" flag may be toggled for any change.
**
** Entire group of changes may also be operated on:
**
**   9. Duplicate an existing group.
**
**  10. Remove an existing group.
**
**  11. The positions of two groups may be exchanged.
**
** There are also schema changes:
**
**  12. A non-PK column may be added to a table. In this case a NULL 
**      value is appended to all records.
**
**  13. A PK column may be added to a table. In this case a non-NULL 
**      value is appended to all INSERT, DELETE and UPDATE old.* records.
**      An "undefined" is appended to new.* UPDATE records.
**
**  14. A column may be removed from a table, provided that it is not the
**      only PRIMARY KEY column in the table. In this case the corresponding
**      field is removed from all records. In cases where this leaves an UPDATE
**      with no non-PK, non-undefined fields, the entire change is removed.
*/

#include "sqlite3.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <ctype.h>

#define FUZZ_VALUE_SUB       1    /* Replace one value with a copy of another */
#define FUZZ_VALUE_MOD       2    /* Modify content by 1 bit */
#define FUZZ_VALUE_RND       3    /* Replace with pseudo-random value */

#define FUZZ_CHANGE_DUP      4    /* Duplicate an existing change */
#define FUZZ_CHANGE_DEL      5    /* Completely remove one change */
#define FUZZ_CHANGE_TYPE     6    /* Change the type of one change */
#define FUZZ_CHANGE_FIELD    7    /* Change an UPDATE to modify fewer columns */
#define FUZZ_CHANGE_INDIRECT 8    /* Toggle the "indirect" flag of a change */

#define FUZZ_GROUP_DUP       9    /* Duplicate a change group */
#define FUZZ_GROUP_DEL      10    /* Delete an entire change group */
#define FUZZ_GROUP_SWAP     11    /* Exchange the position of two groups */

#define FUZZ_COLUMN_ADD     12     /* Add column to table definition */
#define FUZZ_COLUMN_ADDPK   13     /* Add PK column to table definition */
#define FUZZ_COLUMN_DEL     14     /* Remove column from table definition */



typedef unsigned char u8;
typedef sqlite3_uint64 u64;
typedef sqlite3_int64 i64;
typedef unsigned int u32;

/*
** Show a usage message on stderr then quit.
*/
static void usage(const char *argv0){
  fprintf(stderr, "Usage: %s FILENAME ?SEED N?\n", argv0);
  exit(1);
}

/*
** Read the content of a disk file into an in-memory buffer
*/
static void fuzzReadFile(const char *zFilename, int *pSz, void **ppBuf){
  FILE *f;
  int sz;
  void *pBuf;
  f = fopen(zFilename, "rb");
  if( f==0 ){
    fprintf(stderr, "cannot open \"%s\" for reading\n", zFilename);
    exit(1);
  }
  fseek(f, 0, SEEK_END);
  sz = (int)ftell(f);
  rewind(f);
  pBuf = sqlite3_malloc( sz ? sz : 1 );
  if( pBuf==0 ){
    fprintf(stderr, "cannot allocate %d to hold content of \"%s\"\n",
            sz, zFilename);
    exit(1);
  }
  if( sz>0 ){
    if( fread(pBuf, sz, 1, f)!=1 ){
      fprintf(stderr, "cannot read all %d bytes of \"%s\"\n", sz, zFilename);
      exit(1);
    }
    fclose(f);
  }
  *pSz = sz;
  *ppBuf = pBuf;
}

/* 
** Write the contents of buffer pBuf, size nBuf bytes, into file zFilename
** on disk. zFilename, if it already exists, is clobbered.
*/
static void fuzzWriteFile(const char *zFilename, void *pBuf, int nBuf){
  FILE *f;
  f = fopen(zFilename, "wb");
  if( f==0 ){
    fprintf(stderr, "cannot open \"%s\" for writing\n", zFilename);
    exit(1);
  }
  if( fwrite(pBuf, nBuf, 1, f)!=1 ){
    fprintf(stderr, "cannot write to \"%s\"\n", zFilename);
    exit(1);
  }
  fclose(f);
}

static int fuzzCorrupt(){
  return SQLITE_CORRUPT;
}

/*************************************************************************
** The following block is a copy of the implementation of SQLite function
** sqlite3_randomness. This version has two important differences:
**
**   1. It always uses the same seed. So the sequence of random data output
**      is the same for every run of the program.
**
**   2. It is not threadsafe.
*/
static struct sqlite3PrngType {
  unsigned char i, j;             /* State variables */
  unsigned char s[256];           /* State variables */
} sqlite3Prng = {
    0xAF, 0x28,
  {
    0x71, 0xF5, 0xB4, 0x6E, 0x80, 0xAB, 0x1D, 0xB8, 
    0xFB, 0xB7, 0x49, 0xBF, 0xFF, 0x72, 0x2D, 0x14, 
    0x79, 0x09, 0xE3, 0x78, 0x76, 0xB0, 0x2C, 0x0A, 
    0x8E, 0x23, 0xEE, 0xDF, 0xE0, 0x9A, 0x2F, 0x67, 
    0xE1, 0xBE, 0x0E, 0xA7, 0x08, 0x97, 0xEB, 0x77, 
    0x78, 0xBA, 0x9D, 0xCA, 0x49, 0x4C, 0x60, 0x9A, 
    0xF6, 0xBD, 0xDA, 0x7F, 0xBC, 0x48, 0x58, 0x52, 
    0xE5, 0xCD, 0x83, 0x72, 0x23, 0x52, 0xFF, 0x6D, 
    0xEF, 0x0F, 0x82, 0x29, 0xA0, 0x83, 0x3F, 0x7D, 
    0xA4, 0x88, 0x31, 0xE7, 0x88, 0x92, 0x3B, 0x9B, 
    0x3B, 0x2C, 0xC2, 0x4C, 0x71, 0xA2, 0xB0, 0xEA, 
    0x36, 0xD0, 0x00, 0xF1, 0xD3, 0x39, 0x17, 0x5D, 
    0x2A, 0x7A, 0xE4, 0xAD, 0xE1, 0x64, 0xCE, 0x0F, 
    0x9C, 0xD9, 0xF5, 0xED, 0xB0, 0x22, 0x5E, 0x62, 
    0x97, 0x02, 0xA3, 0x8C, 0x67, 0x80, 0xFC, 0x88, 
    0x14, 0x0B, 0x15, 0x10, 0x0F, 0xC7, 0x40, 0xD4, 
    0xF1, 0xF9, 0x0E, 0x1A, 0xCE, 0xB9, 0x1E, 0xA1, 
    0x72, 0x8E, 0xD7, 0x78, 0x39, 0xCD, 0xF4, 0x5D, 
    0x2A, 0x59, 0x26, 0x34, 0xF2, 0x73, 0x0B, 0xA0, 
    0x02, 0x51, 0x2C, 0x03, 0xA3, 0xA7, 0x43, 0x13, 
    0xE8, 0x98, 0x2B, 0xD2, 0x53, 0xF8, 0xEE, 0x91, 
    0x7D, 0xE7, 0xE3, 0xDA, 0xD5, 0xBB, 0xC0, 0x92, 
    0x9D, 0x98, 0x01, 0x2C, 0xF9, 0xB9, 0xA0, 0xEB, 
    0xCF, 0x32, 0xFA, 0x01, 0x49, 0xA5, 0x1D, 0x9A, 
    0x76, 0x86, 0x3F, 0x40, 0xD4, 0x89, 0x8F, 0x9C, 
    0xE2, 0xE3, 0x11, 0x31, 0x37, 0xB2, 0x49, 0x28, 
    0x35, 0xC0, 0x99, 0xB6, 0xD0, 0xBC, 0x66, 0x35, 
    0xF7, 0x83, 0x5B, 0xD7, 0x37, 0x1A, 0x2B, 0x18, 
    0xA6, 0xFF, 0x8D, 0x7C, 0x81, 0xA8, 0xFC, 0x9E, 
    0xC4, 0xEC, 0x80, 0xD0, 0x98, 0xA7, 0x76, 0xCC, 
    0x9C, 0x2F, 0x7B, 0xFF, 0x8E, 0x0E, 0xBB, 0x90, 
    0xAE, 0x13, 0x06, 0xF5, 0x1C, 0x4E, 0x52, 0xF7
  }
};

/* 
** Generate and return single random byte 
*/
static unsigned char fuzzRandomByte(void){
  unsigned char t;
  sqlite3Prng.i++;
  t = sqlite3Prng.s[sqlite3Prng.i];
  sqlite3Prng.j += t;
  sqlite3Prng.s[sqlite3Prng.i] = sqlite3Prng.s[sqlite3Prng.j];
  sqlite3Prng.s[sqlite3Prng.j] = t;
  t += sqlite3Prng.s[sqlite3Prng.i];
  return sqlite3Prng.s[t];
}

/*
** Return N random bytes.
*/
static void fuzzRandomBlob(int nBuf, unsigned char *zBuf){
  int i;
  for(i=0; i<nBuf; i++){
    zBuf[i] = fuzzRandomByte();
  }
}

/*
** Return a random integer between 0 and nRange (not inclusive).
*/
static unsigned int fuzzRandomInt(unsigned int nRange){
  unsigned int ret;
  assert( nRange>0 );
  fuzzRandomBlob(sizeof(ret), (unsigned char*)&ret);
  return (ret % nRange);
}

static u64 fuzzRandomU64(){
  u64 ret;
  fuzzRandomBlob(sizeof(ret), (unsigned char*)&ret);
  return ret;
}

static void fuzzRandomSeed(unsigned int iSeed){
  int i;
  for(i=0; i<256; i+=4){
    sqlite3Prng.s[i] ^= ((iSeed >> 24) & 0xFF);
    sqlite3Prng.s[i+1] ^= ((iSeed >> 16) & 0xFF);
    sqlite3Prng.s[i+2] ^= ((iSeed >>  8) & 0xFF);
    sqlite3Prng.s[i+3] ^= ((iSeed >>  0) & 0xFF);
  }
}
/*
** End of code for generating pseudo-random values.
*************************************************************************/

typedef struct FuzzChangeset FuzzChangeset;
typedef struct FuzzChangesetGroup FuzzChangesetGroup;
typedef struct FuzzChange FuzzChange;

/* 
** Object containing partially parsed changeset.
*/
struct FuzzChangeset {
  int bPatchset;                  /* True for a patchset */
  FuzzChangesetGroup **apGroup;   /* Array of groups in changeset */
  int nGroup;                     /* Number of items in list pGroup */
  u8 **apVal;                     /* Array of all values in changeset */
  int nVal;                       /* Number of used slots in apVal[] */
  int nChange;                    /* Number of changes in changeset */
  int nUpdate;                    /* Number of UPDATE changes in changeset */
};

/* 
** There is one object of this type for each change-group (table header)
** in the input changeset.
*/
struct FuzzChangesetGroup {
  const char *zTab;               /* Name of table */
  int nCol;                       /* Number of columns in table */
  u8 *aPK;                        /* PK array for this table */
  u8 *aChange;                    /* Buffer containing array of changes */
  int szChange;                   /* Size of buffer aChange[] in bytes */
  int nChange;                    /* Number of changes in buffer aChange[] */
};

/*
** Description of a fuzz change to be applied to a changeset.
*/
struct FuzzChange {
  int eType;                      /* One of the FUZZ_* constants above */
  int iChange;                    /* Change or UPDATE to modify */
  int iGroup;                     /* Group to modify */
  int iDelete;                    /* Field to remove (FUZZ_COLUMN_DEL) */
  u8 *pSub1;                      /* Replace this value with pSub2 */
  u8 *pSub2;                      /* And this one with pSub1 */
  u8 aSub[128];                   /* Buffer for substitute value */
  int iCurrent;                   /* Current change number */
};

/*
** Allocate and return nByte bytes of zeroed memory.
*/
static void *fuzzMalloc(int nByte){
  void *pRet = sqlite3_malloc(nByte);
  if( pRet ){
    memset(pRet, 0, nByte);
  }
  return pRet;
}

/*
** Free the buffer indicated by the first argument. This function is used
** to free buffers allocated by fuzzMalloc().
*/
static void fuzzFree(void *p){
  sqlite3_free(p);
}

/*
** Argument p points to a buffer containing an SQLite varint that, assuming the
** input is not corrupt, may be between 0 and 0x7FFFFFFF, inclusive. Before
** returning, this function sets (*pnVal) to the value of that varint, and
** returns the number of bytes of space that it takes up.
*/
static int fuzzGetVarint(u8 *p, int *pnVal){
  int i;
  sqlite3_uint64 nVal = 0;
  for(i=0; i<9; i++){
    nVal = (nVal<<7) + (p[i] & 0x7F);
    if( (p[i] & 0x80)==0 ){
      i++;
      break;
    }
  }
  *pnVal = (int)nVal;
  return i;
}

/*
** Write value nVal into the buffer indicated by argument p as an SQLite
** varint. nVal is guaranteed to be between 0 and (2^21-1), inclusive.
** Return the number of bytes written to buffer p.
*/
static int fuzzPutVarint(u8 *p, int nVal){
  assert( nVal>0 && nVal<2097152 );
  if( nVal<128 ){
    p[0] = nVal;
    return 1;
  }
  if( nVal<16384 ){
    p[0] = ((nVal >> 7) & 0x7F) | 0x80;
    p[1] = (nVal & 0x7F);
    return 2;
  }

  p[0] = ((nVal >> 14) & 0x7F) | 0x80;
  p[1] = ((nVal >> 7) & 0x7F) | 0x80;
  p[2] = (nVal & 0x7F);
  return 3;
}

/*
** Read a 64-bit big-endian integer value from buffer aRec[]. Return
** the value read.
*/
static i64 fuzzGetI64(u8 *aRec){
  return (i64)(
      (((u64)aRec[0]) << 56)
    + (((u64)aRec[1]) << 48)
    + (((u64)aRec[2]) << 40)
    + (((u64)aRec[3]) << 32)
    + (((u64)aRec[4]) << 24)
    + (((u64)aRec[5]) << 16)
    + (((u64)aRec[6]) <<  8)
    + (((u64)aRec[7]) <<  0)
  );
}

/*
** Write value iVal to buffer aRec[] as an unsigned 64-bit big-endian integer.
*/
static void fuzzPutU64(u8 *aRec, u64 iVal){
  aRec[0] = (iVal>>56) & 0xFF;
  aRec[1] = (iVal>>48) & 0xFF;
  aRec[2] = (iVal>>40) & 0xFF;
  aRec[3] = (iVal>>32) & 0xFF;
  aRec[4] = (iVal>>24) & 0xFF;
  aRec[5] = (iVal>>16) & 0xFF;
  aRec[6] = (iVal>> 8) & 0xFF;
  aRec[7] = (iVal)     & 0xFF;
}

/*
** Parse a single table-header from the input. Allocate a new change-group
** object with the results. Return SQLITE_OK if successful, or an error code
** otherwise.
*/
static int fuzzParseHeader(
  FuzzChangeset *pParse,          /* Changeset parse object */
  u8 **ppHdr,                     /* IN/OUT: Iterator */
  u8 *pEnd,                       /* 1 byte past EOF */
  FuzzChangesetGroup **ppGrp      /* OUT: New change-group object */
){
  int rc = SQLITE_OK;
  FuzzChangesetGroup *pGrp;
  u8 cHdr = (pParse->bPatchset ? 'P' : 'T');

  assert( pEnd>(*ppHdr) );
  pGrp = (FuzzChangesetGroup*)fuzzMalloc(sizeof(FuzzChangesetGroup));
  if( !pGrp ){
    rc = SQLITE_NOMEM;
  }else{
    u8 *p = *ppHdr;
    if( p[0]!=cHdr ){
      rc = fuzzCorrupt();
    }else{
      p++;
      p += fuzzGetVarint(p, &pGrp->nCol);
      pGrp->aPK = p;
      p += pGrp->nCol;
      pGrp->zTab = (const char*)p;
      p = &p[strlen(p)+1];

      if( p>=pEnd ){
        rc = fuzzCorrupt();
      }
    }
    *ppHdr = p;
  }

  if( rc!=SQLITE_OK ){
    fuzzFree(pGrp);
    pGrp = 0;
  }

  *ppGrp = pGrp;
  return rc;
}

/*
** Argument p points to a buffer containing a single changeset-record value. 
** This function attempts to determine the size of the value in bytes. If
** successful, it sets (*pSz) to the size and returns SQLITE_OK. Or, if the
** buffer does not contain a valid value, SQLITE_CORRUPT is returned and
** the final value of (*pSz) is undefined.
*/
static int fuzzChangeSize(u8 *p, int *pSz){
  u8 eType = p[0];
  switch( eType ){
    case 0x00:                    /* undefined */
    case 0x05:                    /* null */
      *pSz = 1;
      break;

    case 0x01:                    /* integer */
    case 0x02:                    /* real */
      *pSz = 9;
      break;

    case 0x03:                    /* text */
    case 0x04: {                  /* blob */
      int nTxt;
      int sz;
      sz = fuzzGetVarint(&p[1], &nTxt);
      *pSz = 1 + sz + nTxt;
      break;
    }

    default:
      return fuzzCorrupt();
  }
  return SQLITE_OK;
}

/*
** When this function is called, (*ppRec) points to the start of a 
** record in a changeset being parsed. This function adds entries
** to the pParse->apVal[] array for all values and advances (*ppRec) 
** to one byte past the end of the record. Argument pEnd points to
** one byte past the end of the input changeset.
**
** Argument bPkOnly is true if the record being parsed is part of
** a DELETE record in a patchset. In this case, all non-primary-key
** fields have been omitted from the record.
**
** SQLITE_OK is returned if successful, or an SQLite error code otherwise.
*/
static int fuzzParseRecord(
  u8 **ppRec,                     /* IN/OUT: Iterator */
  u8 *pEnd,                       /* One byte after end of input data */
  FuzzChangeset *pParse,          /* Changeset parse context */
  int bPkOnly                     /* True if non-PK fields omitted */
){
  int rc = SQLITE_OK;
  FuzzChangesetGroup *pGrp = pParse->apGroup[pParse->nGroup-1];
  int i;
  u8 *p = *ppRec;

  for(i=0; rc==SQLITE_OK && i<pGrp->nCol; i++){
    if( bPkOnly==0 || pGrp->aPK[i] ){
      int sz;
      if( p>=pEnd ) break;
      if( (pParse->nVal & (pParse->nVal-1))==0 ){
        int nNew = pParse->nVal ? pParse->nVal*2 : 4;
        u8 **apNew = (u8**)sqlite3_realloc(pParse->apVal, nNew*sizeof(u8*));
        if( apNew==0 ) return SQLITE_NOMEM;
        pParse->apVal = apNew;
      }
      pParse->apVal[pParse->nVal++] = p;
      rc = fuzzChangeSize(p, &sz);
      p += sz;
    }
  }

  if( rc==SQLITE_OK && i<pGrp->nCol ){
    rc = fuzzCorrupt();
  }

  *ppRec = p;
  return rc;
}

/*
** Parse the array of changes starting at (*ppData) and add entries for
** all values to the pParse->apVal[] array. Argument pEnd points to one byte
** past the end of the input changeset. If successful, set (*ppData) to point
** to one byte past the end of the change array and return SQLITE_OK.
** Otherwise, return an SQLite error code. The final value of (*ppData) is
** undefined in this case.
*/
static int fuzzParseChanges(u8 **ppData, u8 *pEnd, FuzzChangeset *pParse){
  u8 cHdr = (pParse->bPatchset ? 'P' : 'T');
  FuzzChangesetGroup *pGrp = pParse->apGroup[pParse->nGroup-1];
  int rc = SQLITE_OK;
  u8 *p = *ppData;

  pGrp->aChange = p;
  while( rc==SQLITE_OK && p<pEnd && p[0]!=cHdr ){
    u8 eOp = p[0];
    u8 bIndirect = p[1];

    p += 2;
    if( eOp==SQLITE_UPDATE ){
      pParse->nUpdate++;
      if( pParse->bPatchset==0 ){
        rc = fuzzParseRecord(&p, pEnd, pParse, 0);
      }
    }else if( eOp!=SQLITE_INSERT && eOp!=SQLITE_DELETE ){
      rc = fuzzCorrupt();
    }
    if( rc==SQLITE_OK ){
      int bPkOnly = (eOp==SQLITE_DELETE && pParse->bPatchset);
      rc = fuzzParseRecord(&p, pEnd, pParse, bPkOnly);
    }
    pGrp->nChange++;
    pParse->nChange++;
  }
  pGrp->szChange = p - pGrp->aChange;

  *ppData = p;
  return rc;
}

/*
** Parse the changeset stored in buffer pChangeset (nChangeset bytes in
** size). If successful, write the results into (*pParse) and return
** SQLITE_OK. Or, if an error occurs, return an SQLite error code. The
** final state of (*pParse) is undefined in this case.
*/
static int fuzzParseChangeset(
  u8 *pChangeset,                 /* Buffer containing changeset */
  int nChangeset,                 /* Size of buffer in bytes */
  FuzzChangeset *pParse           /* OUT: Results of parse */
){
  u8 *pEnd = &pChangeset[nChangeset];
  u8 *p = pChangeset;
  int rc = SQLITE_OK;

  memset(pParse, 0, sizeof(FuzzChangeset));
  if( nChangeset>0 ){
    pParse->bPatchset = (pChangeset[0]=='P');
  }

  while( rc==SQLITE_OK && p<pEnd ){
    FuzzChangesetGroup *pGrp = 0;

    /* Read a table-header from the changeset */
    rc = fuzzParseHeader(pParse, &p, pEnd, &pGrp);
    assert( (rc==SQLITE_OK)==(pGrp!=0) );

    /* If the table-header was successfully parsed, add the new change-group
    ** to the array and parse the associated changes. */
    if( rc==SQLITE_OK ){
      FuzzChangesetGroup **apNew = (FuzzChangesetGroup**)sqlite3_realloc(
          pParse->apGroup, sizeof(FuzzChangesetGroup*)*(pParse->nGroup+1)
      );
      if( apNew==0 ){
        rc = SQLITE_NOMEM;
      }else{
        apNew[pParse->nGroup] = pGrp;
        pParse->apGroup = apNew;
        pParse->nGroup++;
      }
      rc = fuzzParseChanges(&p, pEnd, pParse);
    }
  }

  return rc;
}

/*
** When this function is called, (*ppRec) points to the first byte of
** a record that is part of change-group pGrp. This function attempts
** to output a human-readable version of the record to stdout and advance
** (*ppRec) to point to the first byte past the end of the record before
** returning. If successful, SQLITE_OK is returned. Otherwise, an SQLite
** error code.
**
** If parameter bPkOnly is non-zero, then all non-primary-key fields have
** been omitted from the record. This occurs for records that are part
** of DELETE changes in patchsets.
*/
static int fuzzPrintRecord(FuzzChangesetGroup *pGrp, u8 **ppRec, int bPKOnly){
  int rc = SQLITE_OK;
  u8 *p = *ppRec;
  int i;
  const char *zPre = " (";

  for(i=0; i<pGrp->nCol; i++){
    if( bPKOnly==0 || pGrp->aPK[i] ){
      u8 eType = p++[0];
      switch( eType ){
        case 0x00:                    /* undefined */
          printf("%sn/a", zPre);
          break;

        case 0x01: {                  /* integer */
          sqlite3_int64 iVal = 0;
          iVal = fuzzGetI64(p);
          printf("%s%lld", zPre, iVal);
          p += 8;
          break;
        }

        case 0x02: {                  /* real */
          sqlite3_int64 iVal = 0;
          double fVal = 0.0;
          iVal = fuzzGetI64(p);
          memcpy(&fVal, &iVal, 8);
          printf("%s%f", zPre, fVal);
          p += 8;
          break;
        }

        case 0x03:                    /* text */
        case 0x04: {                  /* blob */
          int nTxt;
          int sz;
          int i;
          p += fuzzGetVarint(p, &nTxt);
          printf("%s%s", zPre, eType==0x03 ? "'" : "X'");
          for(i=0; i<nTxt; i++){
            if( eType==0x03 ){
              printf("%c", p[i]);
            }else{
              char aHex[16] = {'0', '1', '2', '3', '4', '5', '6', '7',
                               '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
              };
              printf("%c", aHex[ p[i]>>4 ]);
              printf("%c", aHex[ p[i] & 0x0F ]);
            }
          }
          printf("'");
          p += nTxt;
          break;
        }

        case 0x05:                    /* null */
          printf("%sNULL", zPre);
          break;
      }
      zPre = ", ";
    }
  }
  printf(")");

  *ppRec = p;
  return rc;
}

/*
** Print a human-readable version of the table-header and all changes in the
** change-group passed as the second argument.
*/
static void fuzzPrintGroup(FuzzChangeset *pParse, FuzzChangesetGroup *pGrp){
  int i;
  u8 *p;

  /* The table header */
  printf("TABLE:  %s nCol=%d aPK=", pGrp->zTab, pGrp->nCol);
  for(i=0; i<pGrp->nCol; i++){
    printf("%d", (int)pGrp->aPK[i]);
  }
  printf("\n");

  /* The array of changes */
  p = pGrp->aChange;
  for(i=0; i<pGrp->nChange; i++){
    u8 eType = p[0];
    u8 bIndirect = p[1];
    printf("%s (ind=%d):",
        (eType==SQLITE_INSERT) ? "INSERT" :
        (eType==SQLITE_DELETE ? "DELETE" : "UPDATE"),
        bIndirect
    );
    p += 2;

    if( pParse->bPatchset==0 && eType==SQLITE_UPDATE ){
      fuzzPrintRecord(pGrp, &p, 0);
    }
    fuzzPrintRecord(pGrp, &p, eType==SQLITE_DELETE && pParse->bPatchset);
    printf("\n");
  }
}

/*
** Initialize the object passed as the second parameter with details
** of the change that will be attempted (type of change, to which part of the
** changeset it applies etc.). If successful, return SQLITE_OK. Or, if an
** error occurs, return an SQLite error code. 
**
** If a negative value is returned, then the selected change would have
** produced a non-well-formed changeset. In this case the caller should
** call this function again.
*/
static int fuzzSelectChange(FuzzChangeset *pParse, FuzzChange *pChange){
  int iSub;

  memset(pChange, 0, sizeof(FuzzChange));
  pChange->eType = fuzzRandomInt(FUZZ_COLUMN_DEL) + 1;

  assert( pChange->eType==FUZZ_VALUE_SUB
       || pChange->eType==FUZZ_VALUE_MOD
       || pChange->eType==FUZZ_VALUE_RND
       || pChange->eType==FUZZ_CHANGE_DUP
       || pChange->eType==FUZZ_CHANGE_DEL
       || pChange->eType==FUZZ_CHANGE_TYPE
       || pChange->eType==FUZZ_CHANGE_FIELD
       || pChange->eType==FUZZ_CHANGE_INDIRECT
       || pChange->eType==FUZZ_GROUP_DUP
       || pChange->eType==FUZZ_GROUP_DEL
       || pChange->eType==FUZZ_GROUP_SWAP
       || pChange->eType==FUZZ_COLUMN_ADD
       || pChange->eType==FUZZ_COLUMN_ADDPK
       || pChange->eType==FUZZ_COLUMN_DEL
  );

  pChange->iGroup = fuzzRandomInt(pParse->nGroup);
  pChange->iChange = fuzzRandomInt(pParse->nChange);
  if( pChange->eType==FUZZ_CHANGE_FIELD ){
    if( pParse->nUpdate==0 ) return -1;
    pChange->iChange = fuzzRandomInt(pParse->nUpdate);
  }

  pChange->iDelete = -1;
  if( pChange->eType==FUZZ_COLUMN_DEL ){
    FuzzChangesetGroup *pGrp = pParse->apGroup[pChange->iGroup];
    int i;
    pChange->iDelete = fuzzRandomInt(pGrp->nCol);
    for(i=pGrp->nCol-1; i>=0; i--){
      if( pGrp->aPK[i] && pChange->iDelete!=i ) break;
    }
    if( i<0 ) return -1;
  }

  if( pChange->eType==FUZZ_GROUP_SWAP ){
    FuzzChangesetGroup *pGrp;
    int iGrp = pChange->iGroup;
    if( pParse->nGroup==1 ) return -1;
    while( iGrp==pChange->iGroup ){
      iGrp = fuzzRandomInt(pParse->nGroup);
    }
    pGrp = pParse->apGroup[pChange->iGroup];
    pParse->apGroup[pChange->iGroup] = pParse->apGroup[iGrp];
    pParse->apGroup[iGrp] = pGrp;
  }

  if( pChange->eType==FUZZ_VALUE_SUB 
   || pChange->eType==FUZZ_VALUE_MOD 
   || pChange->eType==FUZZ_VALUE_RND 
  ){
    iSub = fuzzRandomInt(pParse->nVal);
    pChange->pSub1 = pParse->apVal[iSub];
    if( pChange->eType==FUZZ_VALUE_SUB ){
      iSub = fuzzRandomInt(pParse->nVal);
      pChange->pSub2 = pParse->apVal[iSub];
    }else{
      pChange->pSub2 = pChange->aSub;
    }

    if( pChange->eType==FUZZ_VALUE_RND ){
      pChange->aSub[0] = (u8)(fuzzRandomInt(5) + 1);
      switch( pChange->aSub[0] ){
        case 0x01: {                  /* integer */
          u64 iVal = fuzzRandomU64();
          fuzzPutU64(&pChange->aSub[1], iVal);
          break;
        }

        case 0x02: {                  /* real */
          u64 iVal1 = fuzzRandomU64();
          u64 iVal2 = fuzzRandomU64();
          double d = (double)iVal1 / (double)iVal2;
          memcpy(&iVal1, &d, sizeof(iVal1));
          fuzzPutU64(&pChange->aSub[1], iVal1);
          break;
        }

        case 0x03:                    /* text */
        case 0x04: {                  /* blob */
          int nByte = fuzzRandomInt(48);
          pChange->aSub[1] = nByte;
          fuzzRandomBlob(nByte, &pChange->aSub[2]);
          if( pChange->aSub[0]==0x03 ){
            int i;
            for(i=0; i<nByte; i++){
              pChange->aSub[2+i] &= 0x7F;
            }
          }
          break;
        }
      }
    }
    if( pChange->eType==FUZZ_VALUE_MOD ){
      int sz;
      int iMod = -1;
      fuzzChangeSize(pChange->pSub1, &sz);
      memcpy(pChange->aSub, pChange->pSub1, sz);
      switch( pChange->aSub[0] ){
        case 0x01:
        case 0x02:
          iMod = fuzzRandomInt(8) + 1;
          break;

        case 0x03:                    /* text */
        case 0x04: {                  /* blob */
          int nByte;
          int iFirst = 1 + fuzzGetVarint(&pChange->aSub[1], &nByte);
          if( nByte>0 ){
            iMod = fuzzRandomInt(nByte) + iFirst;
          }
          break;
        }
      }

      if( iMod>=0 ){
        u8 mask = (1 << fuzzRandomInt(8 - (pChange->aSub[0]==0x03)));
        pChange->aSub[iMod] ^= mask;
      }
    }
  }

  return SQLITE_OK;
}

/*
** Copy a single change from the input to the output changeset, making
** any modifications specified by (*pFuzz).
*/
static int fuzzCopyChange(
  FuzzChangeset *pParse,
  int iGrp,
  FuzzChange *pFuzz,
  u8 **pp, u8 **ppOut             /* IN/OUT: Input and output pointers */
){
  int bPS = pParse->bPatchset;
  FuzzChangesetGroup *pGrp = pParse->apGroup[iGrp];
  u8 *p = *pp;
  u8 *pOut = *ppOut;
  u8 eType = p++[0];
  int iRec;
  int nRec = ((eType==SQLITE_UPDATE && !bPS) ? 2 : 1);
  int iUndef = -1;
  int nUpdate = 0;

  u8 eNew = eType;
  if( pFuzz->iCurrent==pFuzz->iChange && pFuzz->eType==FUZZ_CHANGE_TYPE ){
    switch( eType ){
      case SQLITE_INSERT:
        eNew = SQLITE_DELETE;
        break;
      case SQLITE_DELETE:
        eNew = SQLITE_UPDATE;
        break;
      case SQLITE_UPDATE:
        eNew = SQLITE_INSERT;
        break;
    }
  }

  if( pFuzz->iCurrent==pFuzz->iChange 
   && pFuzz->eType==FUZZ_CHANGE_FIELD && eType==SQLITE_UPDATE
  ){
    int sz;
    int i;
    int nDef = 0;
    u8 *pCsr = p+1;
    for(i=0; i<pGrp->nCol; i++){
      if( pCsr[0] && pGrp->aPK[i]==0 ) nDef++;
      fuzzChangeSize(pCsr, &sz);
      pCsr += sz;
    }
    if( nDef<=1 ) return -1;
    nDef = fuzzRandomInt(nDef);
    pCsr = p+1;
    for(i=0; i<pGrp->nCol; i++){
      if( pCsr[0] && pGrp->aPK[i]==0 ){
        if( nDef==0 ) iUndef = i;
        nDef--;
      }
      fuzzChangeSize(pCsr, &sz);
      pCsr += sz;
    }
  }

  /* Copy the change type and indirect flag. If the fuzz mode is
  ** FUZZ_CHANGE_INDIRECT, and the current change is the one selected for
  ** fuzzing, invert the indirect flag.  */
  *(pOut++) = eNew;
  if( pFuzz->eType==FUZZ_CHANGE_INDIRECT && pFuzz->iCurrent==pFuzz->iChange ){
    *(pOut++) = !(*(p++));
  }else{
    *(pOut++) = *(p++);
  }

  for(iRec=0; iRec<nRec; iRec++){
    int i;

    /* Copy the next record from the output to the input.
    */
    for(i=0; i<pGrp->nCol; i++){
      int sz;
      u8 *pCopy = p;

      /* If this is a patchset, and the input is a DELETE, then the only
      ** fields present are the PK fields. So, if this is not a PK, skip to 
      ** the next column. If the current fuzz is FUZZ_CHANGE_TYPE, then
      ** write a randomly selected value to the output.  */
      if( bPS && eType==SQLITE_DELETE && pGrp->aPK[i]==0 ){
        if( eType!=eNew ){
          assert( eNew==SQLITE_UPDATE );
          do {
            pCopy = pParse->apVal[fuzzRandomInt(pParse->nVal)];
          }while( pCopy[0]==0x00 );
          fuzzChangeSize(pCopy, &sz);
          memcpy(pOut, pCopy, sz);
          pOut += sz;
        }
        continue;
      }

      if( p==pFuzz->pSub1 ){
        pCopy = pFuzz->pSub2;
      }else if( p==pFuzz->pSub2 ){
        pCopy = pFuzz->pSub1;
      }else if( i==iUndef ){
        pCopy = "\0";
      }

      if( pCopy[0]==0x00 && eNew!=eType && eType==SQLITE_UPDATE && iRec==0 ){
        while( pCopy[0]==0x00 ){
          pCopy = pParse->apVal[fuzzRandomInt(pParse->nVal)];
        }
      }else if( p[0]==0x00 && pCopy[0]!=0x00 ){
        return -1;
      }else{
        if( pGrp->aPK[i]>0 && pCopy[0]==0x05 ) return -1;
      }

      if( (pFuzz->iGroup!=iGrp || i!=pFuzz->iDelete)
       && (eNew==eType || eType!=SQLITE_UPDATE || iRec==0)
       && (eNew==eType || eNew!=SQLITE_DELETE || !bPS || pGrp->aPK[i])
      ){
        fuzzChangeSize(pCopy, &sz);
        memcpy(pOut, pCopy, sz);
        pOut += sz;
        nUpdate += (pGrp->aPK[i]==0 && pCopy[0]!=0x00);
      }

      fuzzChangeSize(p, &sz);
      p += sz;
    }

    if( iGrp==pFuzz->iGroup ){
      if( pFuzz->eType==FUZZ_COLUMN_ADD ){
        if( !bPS || eType!=SQLITE_DELETE ) *(pOut++) = 0x05;
      }else if( pFuzz->eType==FUZZ_COLUMN_ADDPK ){
        if( iRec==1 ){
          *(pOut++) = 0x00;
        }else{
          u8 *pNew;
          int szNew;
          do {
            pNew = pParse->apVal[fuzzRandomInt(pParse->nVal)];
          }while( pNew[0]==0x00 || pNew[0]==0x05 );
          fuzzChangeSize(pNew, &szNew);
          memcpy(pOut, pNew, szNew);
          pOut += szNew;
        }
      }
    }
  }

  if( pFuzz->iCurrent==pFuzz->iChange ){
    if( pFuzz->eType==FUZZ_CHANGE_DUP ){
      int nByte = pOut - (*ppOut);
      memcpy(pOut, *ppOut, nByte);
      pOut += nByte;
    }

    if( pFuzz->eType==FUZZ_CHANGE_DEL ){
      pOut = *ppOut;
    }
    if( eNew!=eType && eNew==SQLITE_UPDATE && !bPS ){
      int i;
      u8 *pCsr = (*ppOut) + 2;
      for(i=0; i<pGrp->nCol; i++){
        int sz;
        u8 *pCopy = pCsr;
        if( pGrp->aPK[i] ) pCopy = "\0";
        fuzzChangeSize(pCopy, &sz);
        memcpy(pOut, pCopy, sz);
        pOut += sz;
        fuzzChangeSize(pCsr, &sz);
        pCsr += sz;
      }
    }
  }

  /* If a column is being deleted from this group, and this change was an 
  ** UPDATE, and there are now no non-PK, non-undefined columns in the 
  ** change, remove it altogether. */
  if( pFuzz->eType==FUZZ_COLUMN_DEL && pFuzz->iGroup==iGrp 
   && eType==SQLITE_UPDATE && nUpdate==0 
  ){
    pOut = *ppOut;
  }

  *pp = p;
  *ppOut = pOut;
  pFuzz->iCurrent += (eType==SQLITE_UPDATE || pFuzz->eType!=FUZZ_CHANGE_FIELD);
  return SQLITE_OK;
}

/*
** Fuzz the changeset parsed into object pParse and write the results 
** to file zOut on disk. Argument pBuf points to a buffer that is guaranteed
** to be large enough to hold the fuzzed changeset.
**
** Return SQLITE_OK if successful, or an SQLite error code if an error occurs.
*/
static int fuzzDoOneFuzz(
  const char *zOut,               /* Filename to write modified changeset to */
  u8 *pBuf,                       /* Buffer to use for modified changeset */
  FuzzChangeset *pParse           /* Parse of input changeset */
){
  FuzzChange change;
  int iGrp;
  int rc = -1;

  while( rc<0 ){
    u8 *pOut = pBuf;
    rc = fuzzSelectChange(pParse, &change);
    for(iGrp=0; rc==SQLITE_OK && iGrp<pParse->nGroup; iGrp++){
      FuzzChangesetGroup *pGrp = pParse->apGroup[iGrp];
      int nTab = strlen(pGrp->zTab) + 1;
      int j;
      int nRep = 1;

      /* If this is the group to delete for a FUZZ_GROUP_DEL change, jump to
      ** the next group. Unless this is the only group in the changeset - in
      ** that case this change cannot be applied.
      **
      ** Or, if this is a FUZZ_GROUP_DUP, set nRep to 2 to output two
      ** copies of the group. */
      if( change.iGroup==iGrp ){
        if( change.eType==FUZZ_GROUP_DEL ){
          if( pParse->nGroup==1 ) rc = -1;
          continue;
        }
        else if( change.eType==FUZZ_GROUP_DUP ){
          nRep = 2;
        }
      }

      for(j=0; j<nRep; j++){
        int i;
        u8 *pSaved;
        u8 *p = pGrp->aChange;
        int nCol = pGrp->nCol;
        int iPKDel = 0;
        if( iGrp==change.iGroup ){
          if( change.eType==FUZZ_COLUMN_ADD 
           || change.eType==FUZZ_COLUMN_ADDPK 
          ){
            nCol++;
          }else if( change.eType==FUZZ_COLUMN_DEL ){
            nCol--;
            iPKDel = pGrp->aPK[change.iDelete];
          }
        }

        /* Output a table header */
        pOut++[0] = pParse->bPatchset ? 'P' : 'T';
        pOut += fuzzPutVarint(pOut, nCol);

        for(i=0; i<pGrp->nCol; i++){
          if( iGrp!=change.iGroup || i!=change.iDelete ){
            u8 v = pGrp->aPK[i];
            if( iPKDel && v>iPKDel ) v--;
            *(pOut++) = v;
          }
        }
        if( nCol>pGrp->nCol ){
          if( change.eType==FUZZ_COLUMN_ADD ){
            *(pOut++) = 0x00;
          }else{
            u8 max = 0;
            for(i=0; i<pGrp->nCol; i++){
              if( pGrp->aPK[i]>max ) max = pGrp->aPK[i];
            }
            *(pOut++) = max+1;
          }
        }
        memcpy(pOut, pGrp->zTab, nTab);
        pOut += nTab;

        /* Output the change array. */
        pSaved = pOut;
        for(i=0; rc==SQLITE_OK && i<pGrp->nChange; i++){
          rc = fuzzCopyChange(pParse, iGrp, &change, &p, &pOut);
        }
        if( pOut==pSaved ) rc = -1;
      }
    }
    if( rc==SQLITE_OK ){
      fuzzWriteFile(zOut, pBuf, pOut-pBuf);
    }
  }

  return rc;
}

int main(int argc, char **argv){
  int nRepeat = 0;                /* Number of output files */
  int iSeed = 0;                  /* Value of PRNG seed */
  const char *zInput;             /* Name of input file */
  void *pChangeset = 0;           /* Input changeset */
  int nChangeset = 0;             /* Size of input changeset in bytes */
  int i;                          /* Current output file */
  FuzzChangeset changeset;        /* Partially parsed changeset */
  int rc;
  u8 *pBuf = 0;

  if( argc!=4 && argc!=2 ) usage(argv[0]);
  zInput = argv[1];

  fuzzReadFile(zInput, &nChangeset, &pChangeset);
  rc = fuzzParseChangeset(pChangeset, nChangeset, &changeset);

  if( rc==SQLITE_OK ){
    if( argc==2 ){
      for(i=0; i<changeset.nGroup; i++){
        fuzzPrintGroup(&changeset, changeset.apGroup[i]);
      }
    }else{
      pBuf = (u8*)fuzzMalloc(nChangeset*2 + 1024);
      if( pBuf==0 ){
        rc = SQLITE_NOMEM;
      }else{
        iSeed = atoi(argv[2]);
        nRepeat = atoi(argv[3]);
        fuzzRandomSeed((unsigned int)iSeed);
        for(i=0; rc==SQLITE_OK && i<nRepeat; i++){
          char *zOut = sqlite3_mprintf("%s-%d", zInput, i);
          rc = fuzzDoOneFuzz(zOut, pBuf, &changeset);
          sqlite3_free(zOut);
        }
        fuzzFree(pBuf);
      }
    }
  }

  if( rc!=SQLITE_OK ){
    fprintf(stderr, "error while processing changeset: %d\n", rc);
  }

  return rc;
}

# 2018 November 08
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#

if {![info exists testdir]} {
  set testdir [file join [file dirname [info script]] .. .. test]
} 
source [file join [file dirname [info script]] session_common.tcl]
source $testdir/tester.tcl
ifcapable !session {finish_test; return}
set testprefix changesetfuzz1


set CF [test_find_binary changesetfuzz]
if {$CF==""} {
  finish_test
  return
}

proc writefile {zFile data} {
  set fd [open $zFile w]
  fconfigure $fd -translation binary -encoding binary
  puts -nonewline $fd $data
  close $fd
}

do_execsql_test 1.0 {
  CREATE TABLE t1(a, b, c, d, PRIMARY KEY(c, d));
  CREATE TABLE t2(a INTEGER PRIMARY KEY, b, c);

  INSERT INTO t1 VALUES ('one', 'two', 'three', 'four'), 
                        ('five', 'six', 'seven', 'eight'), 
                        ('nine', 'ten', 'eleven', 'twelve');
  INSERT INTO t2 VALUES (1, 2, 3), (4, 5, 6), (7, 8, 9);
}

set C [changeset_from_sql {
  INSERT INTO t2 VALUES(10, 11, 12);
  DELETE FROM t2 WHERE a=1;
  UPDATE t1 SET b='forty-five' WHERE a='one';
  UPDATE t1 SET a='twenty-nine', b='seventy' WHERE a='five';
}]
writefile c1.changeset $C

do_test 1.1 {
  for {set j 0} {$j < 200} {incr j} {
    forcecopy c1.changeset input.changeset
    for {set i 0} {$i < 6} {incr i} {
      exec $CF input.changeset $i 1
      exec $CF input.changeset-0
      forcecopy input.changeset-0 input.changeset
    }
  }
} {}

set P [patchset_from_sql {
  INSERT INTO t2 VALUES(13, 14, 15);
  DELETE FROM t2 WHERE a=4;
  UPDATE t1 SET b='thirteen' WHERE a='one';
  UPDATE t1 SET a='ninety-seven', b='twenty' WHERE a='five';
}]
writefile p1.patchset $P
do_test 1.2 {
  for {set j 0} {$j < 200} {incr j} {
    forcecopy p1.patchset input.patchset
    for {set i 0} {$i < 6} {incr i} {
      exec $CF input.patchset $i 1
      exec $CF input.patchset-0
      forcecopy input.patchset-0 input.patchset
    }
  }
} {}


finish_test

    SELECT * FROM t3;
  }
} {1 1 3 3}



finish_test

} {0 {}}
S delete
do_catchsql_test 4.5.2 {
  SELECT * FROM ixua.i8;
} {1 {no such table: ixua.i8}}

finish_test

  {INSERT t2 0 X. {} {i 7 i 8}}
}


S delete

finish_test

  }

  do_test 3.$tn { set res } [list {*}$result]
}


finish_test

  SELECT count(*) FROM t1 WHERE number_name(a+1) IS NOT b; 
} {0}

# db eval { SELECT * FROM t1 } { puts "$a || $b" }


finish_test

    INSERT INTO t1 SELECT 'abcde', randomblob(16), i FROM s;
  }
  compare_db db db2
} {}


finish_test

} -test {
  catch { R delete } 
  faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
}


finish_test

    R configure $::rebase
    expr [catch {R rebase $P}]==0
  } $rebasable

  catch { R delete }
}
finish_test

    return "REPLACE"
  }
  sqlite3changeset_apply db2 $C xConflict
  execsql { SELECT * FROM sqlite_stat1 ORDER BY 1,2 } db2
} {t3 null 3}

finish_test

do_iterator_test 1.3 t1 {
  DELETE FROM t1;
} {
  {DELETE t1 0 X. {t one t three} {}}
}

finish_test

showshm$(EXE):	$(TOP)/tool/showshm.c
	$(TCC) -o showshm$(EXE) $(TOP)/tool/showshm.c

changeset$(EXE):	$(TOP)/ext/session/changeset.c sqlite3.o
	$(TCC) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -o changeset$(EXE) \
		$(TOP)/ext/session/changeset.c sqlite3.o $(THREADLIB)

changesetfuzz$(EXE):	$(TOP)/ext/session/changesetfuzz.c sqlite3.o
	$(TCC) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -o changesetfuzz$(EXE) \
		$(TOP)/ext/session/changesetfuzz.c sqlite3.o $(THREADLIB)

fts3view$(EXE):	$(TOP)/ext/fts3/tool/fts3view.c sqlite3.o
	$(TCC) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -o fts3view$(EXE) \
		$(TOP)/ext/fts3/tool/fts3view.c sqlite3.o $(THREADLIB)

rollback-test$(EXE):	$(TOP)/tool/rollback-test.c sqlite3.o
	$(TCC) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -o rollback-test$(EXE) \

    assert( pPk->nColumn==j );
    assert( pTab->nCol==j );
  }else{
    pPk->nColumn = pTab->nCol;
  }
  recomputeColumnsNotIndexed(pPk);
}

/*
** Return true if zName is a shadow table name in the current database
** connection.
**
** zName is temporarily modified while this routine is running, but is
** restored to its original value prior to this routine returning.
*/
static int isShadowTableName(sqlite3 *db, char *zName){
  char *zTail;                  /* Pointer to the last "_" in zName */
  Table *pTab;                  /* Table that zName is a shadow of */
  Module *pMod;                 /* Module for the virtual table */

  zTail = strrchr(zName, '_');
  if( zTail==0 ) return 0;
  *zTail = 0;
  pTab = sqlite3FindTable(db, zName, 0);
  *zTail = '_';
  if( pTab==0 ) return 0;
  if( !IsVirtual(pTab) ) return 0;
  pMod = (Module*)sqlite3HashFind(&db->aModule, pTab->azModuleArg[0]);
  if( pMod==0 ) return 0;
  if( pMod->pModule->iVersion<3 ) return 0;
  if( pMod->pModule->xShadowName==0 ) return 0;
  return pMod->pModule->xShadowName(zTail+1);
}

/*
** This routine is called to report the final ")" that terminates
** a CREATE TABLE statement.
**
** The table structure that other action routines have been building
** is added to the internal hash tables, assuming no errors have

  if( pEnd==0 && pSelect==0 ){
    return;
  }
  assert( !db->mallocFailed );
  p = pParse->pNewTable;
  if( p==0 ) return;

  if( pSelect==0 && isShadowTableName(db, p->zName) ){
    p->tabFlags |= TF_Shadow;
  }

  /* If the db->init.busy is 1 it means we are reading the SQL off the
  ** "sqlite_master" or "sqlite_temp_master" table on the disk.
  ** So do not write to the disk again.  Extract the root page number
  ** for the table from the db->init.newTnum field.  (The page number
  ** should have been put there by the sqliteOpenCb routine.)
  **

    0,                            /* xCommit */
    0,                            /* xRollback */
    0,                            /* xFindMethod */
    0,                            /* xRename */
    0,                            /* xSavepoint */
    0,                            /* xRelease */
    0,                            /* xRollbackTo */
    0                             /* xShadowName */
  };
  return sqlite3_create_module(db, "sqlite_dbpage", &dbpage_module, 0);
}
#elif defined(SQLITE_ENABLE_DBPAGE_VTAB)
int sqlite3DbpageRegister(sqlite3 *db){ return SQLITE_OK; }
#endif /* SQLITE_ENABLE_DBSTAT_VTAB */

    0,                            /* xCommit */
    0,                            /* xRollback */
    0,                            /* xFindMethod */
    0,                            /* xRename */
    0,                            /* xSavepoint */
    0,                            /* xRelease */
    0,                            /* xRollbackTo */
    0                             /* xShadowName */
  };
  return sqlite3_create_module(db, "dbstat", &dbstat_module, 0);
}
#elif defined(SQLITE_ENABLE_DBSTAT_VTAB)
int sqlite3DbstatRegister(sqlite3 *db){ return SQLITE_OK; }
#endif /* SQLITE_ENABLE_DBSTAT_VTAB */

    pTab->nTabRef++;
  }
  if( sqlite3IndexedByLookup(pParse, pItem) ){
    pTab = 0;
  }
  return pTab;
}

/* Return true if table pTab is read-only.
**
** A table is read-only if any of the following are true:
**
**   1) It is a virtual table and no implementation of the xUpdate method
**      has been provided
**
**   2) It is a system table (i.e. sqlite_master), this call is not
**      part of a nested parse and writable_schema pragma has not 
**      been specified
**
**   3) The table is a shadow table, the database connection is in
**      defensive mode, and the current sqlite3_prepare()
**      is for a top-level SQL statement.
*/
static int tabIsReadOnly(Parse *pParse, Table *pTab){
  sqlite3 *db;
  if( IsVirtual(pTab) ){
    return sqlite3GetVTable(pParse->db, pTab)->pMod->pModule->xUpdate==0;
  }
  if( (pTab->tabFlags & (TF_Readonly|TF_Shadow))==0 ) return 0;
  db = pParse->db;
  if( (pTab->tabFlags & TF_Readonly)!=0 ){
    return sqlite3WritableSchema(db)==0 && pParse->nested==0;
  }
  assert( pTab->tabFlags & TF_Shadow );
  return (db->flags & SQLITE_Defensive)!=0
           && db->nVdbeExec==0
           && db->pVtabCtx==0;
}

/*
** Check to make sure the given table is writable.  If it is not
** writable, generate an error message and return 1.  If it is
** writable return 0;
*/
int sqlite3IsReadOnly(Parse *pParse, Table *pTab, int viewOk){














  if( tabIsReadOnly(pParse, pTab) ){

    sqlite3ErrorMsg(pParse, "table %s may not be modified", pTab->zName);
    return 1;
  }

#ifndef SQLITE_OMIT_VIEW
  if( !viewOk && pTab->pSelect ){
    sqlite3ErrorMsg(pParse,"cannot modify %s because it is a view",pTab->zName);
    return 1;
  }
#endif
  return 0;

                 | SQLITE_CellSizeCk
#endif
#if defined(SQLITE_ENABLE_FTS3_TOKENIZER)
                 | SQLITE_Fts3Tokenizer
#endif
#if defined(SQLITE_ENABLE_QPSG)
                 | SQLITE_EnableQPSG
#endif
#if defined(SQLITE_DEFAULT_DEFENSIVE)
                 | SQLITE_Defensive
#endif
      ;
  sqlite3HashInit(&db->aCollSeq);
#ifndef SQLITE_OMIT_VIRTUALTABLE
  sqlite3HashInit(&db->aModule);
#endif

  0,                           /* xSync - sync transaction */
  0,                           /* xCommit - commit transaction */
  0,                           /* xRollback - rollback transaction */
  0,                           /* xFindFunction - function overloading */
  0,                           /* xRename - rename the table */
  0,                           /* xSavepoint */
  0,                           /* xRelease */
  0,                           /* xRollbackTo */
  0                            /* xShadowName */
};

/*
** Check to see if zTabName is really the name of a pragma.  If it is,
** then register an eponymous virtual table for that pragma and return
** a pointer to the Module object for the new virtual table.
*/

** <li> sqlite3_db_config(db, SQLITE_DBCONFIG_RESET_DATABASE, 0, 0);
** </ol>
** Because resetting a database is destructive and irreversible, the
** process requires the use of this obscure API and multiple steps to help
** ensure that it does not happen by accident.
**
** <dt>SQLITE_DBCONFIG_DEFENSIVE</dt>
** <dd>The SQLITE_DBCONFIG_DEFENSIVE option activates or deactivates the
** "defensive" flag for a database connection.  When the defensive
** flag is enabled, language features that allow ordinary SQL to 
** deliberately corrupt the database file are disabled.  The disabled


** features include but are not limited to the following:
** <ul>
** <li> The [PRAGMA writable_schema=ON] statement.
** <li> Writes to the [sqlite_dbpage] virtual table.
** <li> Direct writes to shadow tables.
** </ul>










** </dd>
** </dl>
*/
#define SQLITE_DBCONFIG_MAINDBNAME            1000 /* const char* */
#define SQLITE_DBCONFIG_LOOKASIDE             1001 /* void* int int */
#define SQLITE_DBCONFIG_ENABLE_FKEY           1002 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_TRIGGER        1003 /* int int* */

                       void **ppArg);
  int (*xRename)(sqlite3_vtab *pVtab, const char *zNew);
  /* The methods above are in version 1 of the sqlite_module object. Those 
  ** below are for version 2 and greater. */
  int (*xSavepoint)(sqlite3_vtab *pVTab, int);
  int (*xRelease)(sqlite3_vtab *pVTab, int);
  int (*xRollbackTo)(sqlite3_vtab *pVTab, int);
  /* The methods above are in versions 1 and 2 of the sqlite_module object.
  ** Those below are for version 3 and greater. */
  int (*xShadowName)(const char*);
};

/*
** CAPI3REF: Virtual Table Indexing Information
** KEYWORDS: sqlite3_index_info
**
** The sqlite3_index_info structure and its substructures is used as part

#define TF_HasStat1        0x0010    /* nRowLogEst set from sqlite_stat1 */
#define TF_WithoutRowid    0x0020    /* No rowid.  PRIMARY KEY is the key */
#define TF_NoVisibleRowid  0x0040    /* No user-visible "rowid" column */
#define TF_OOOHidden       0x0080    /* Out-of-Order hidden columns */
#define TF_StatsUsed       0x0100    /* Query planner decisions affected by
                                     ** Index.aiRowLogEst[] values */
#define TF_HasNotNull      0x0200    /* Contains NOT NULL constraints */
#define TF_Shadow          0x0400    /* True for a shadow table */

/*
** Test to see whether or not a table is a virtual table.  This is
** done as a macro so that it will be optimized out when virtual
** table support is omitted from the build.
*/
#ifndef SQLITE_OMIT_VIRTUALTABLE

  saved_flags = db->flags;
  saved_mDbFlags = db->mDbFlags;
  saved_nChange = db->nChange;
  saved_nTotalChange = db->nTotalChange;
  saved_mTrace = db->mTrace;
  db->flags |= SQLITE_WriteSchema | SQLITE_IgnoreChecks;
  db->mDbFlags |= DBFLAG_PreferBuiltin | DBFLAG_Vacuum;
  db->flags &= ~(SQLITE_ForeignKeys | SQLITE_ReverseOrder
                   | SQLITE_Defensive | SQLITE_CountRows);
  db->mTrace = 0;

  zDbMain = db->aDb[iDb].zDbSName;
  pMain = db->aDb[iDb].pBt;
  isMemDb = sqlite3PagerIsMemdb(sqlite3BtreePager(pMain));

  /* Attach the temporary database as 'vacuum_db'. The synchronous pragma

# to the supplied value. This is 2 if the added column has a default that is
# NULL, or 3 otherwise. 
#
proc alter_table {tbl sql {file_format 2}} {
  sqlite3 dbat test.db
  set s [string map {' ''} $sql]
  set t [string map {' ''} $tbl]
  sqlite3_db_config dbat DEFENSIVE 0
  dbat eval [subst {
    PRAGMA writable_schema = 1;
    UPDATE sqlite_master SET sql = '$s' WHERE name = '$t' AND type = 'table';
    PRAGMA writable_schema = 0;
  }]
  dbat close
  set_file_format 2

  catchsql {SELECT substr('abcdefg',1,3)}
} {1 {bad function}}


#-----------------------------------------------------------------------
# Some basic tests to make sure short rows are handled.
#
sqlite3_db_config db DEFENSIVE 0
do_test alter2-1.1 {
  execsql {
    CREATE TABLE abc(a, b);
    INSERT INTO abc VALUES(1, 2);
    INSERT INTO abc VALUES(3, 4);
    INSERT INTO abc VALUES(5, 6);
  }

do_execsql_test 13.1.3 {
  DROP TRIGGER tr1;
  CREATE INDEX x1i ON x1(i);
  SELECT sql FROM sqlite_master WHERE name='x1i';
} {{CREATE INDEX x1i ON x1(i)}}

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 13.1.4 {
  PRAGMA writable_schema = 1;
  UPDATE sqlite_master SET sql = 'CREATE INDEX x1i ON x1(j)' WHERE name='x1i';
} {}

do_catchsql_test 13.1.5 {
  ALTER TABLE x1 RENAME COLUMN t TO ttt;

}
do_execsql_test 14.6 {
  ALTER TABLE t1 RENAME TO tt1;
}


finish_test

do_execsql_test 15.5 {
  SELECT sql FROM sqlite_master WHERE name = 'y';
} {{CREATE VIEW y AS SELECT f2 AS f1 FROM x}}


finish_test

  {CREATE TABLE c1(x REFERENCES "p3")}
  {CREATE TABLE c2(x, FOREIGN KEY (x) REFERENCES "p3")}
  {CREATE TABLE c3(x, FOREIGN KEY (x) REFERENCES "p3"(a))}
}


finish_test

  } {t4i1 t4i2 t4}
}

# This test corrupts the database file so it must be the last test
# in the series.
#
do_test analyze-5.99 {
  sqlite3_db_config db DEFENSIVE 0
  execsql {
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET sql='nonsense' WHERE name='sqlite_stat1';
  }
  db close
  catch { sqlite3 db test.db }
  catchsql {

# Does not crash if the sqlite_sequence table schema is missing
# or corrupt.
#
do_test autoinc-12.1 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
    CREATE TABLE fake_sequence(name TEXT PRIMARY KEY,seq) WITHOUT ROWID;
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET
     sql=replace(sql,'fake_','sqlite_'),
     name='sqlite_sequence',
     tbl_name='sqlite_sequence'

  }} msg]
  lappend res $msg
} {1 {database disk image is malformed}}
do_test autoinc-12.2 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
   CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
   INSERT INTO t1(b) VALUES('one');
   PRAGMA writable_schema=on;
   UPDATE sqlite_master SET
     sql=replace(sql,'sqlite_','x_'),
     name='x_sequence',

} else {
  set err {malformed database schema (sqlite_sequence) - near "VIRTUAL": syntax error}
}
do_test autoinc-12.3 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
   CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
   INSERT INTO t1(b) VALUES('one');
   PRAGMA writable_schema=on;
   UPDATE sqlite_master SET
     sql='CREATE VIRTUAL TABLE sqlite_sequence USING sqlite_dbpage'
    WHERE name='sqlite_sequence';

    INSERT INTO t1(b) VALUES('one');
    CREATE TABLE fake(name TEXT PRIMARY KEY,seq) WITHOUT ROWID;
  }
  set root1 [db one {SELECT rootpage FROM sqlite_master
                     WHERE name='sqlite_sequence'}]
  set root2 [db one {SELECT rootpage FROM sqlite_master
                     WHERE name='fake'}]
  sqlite3_db_config db DEFENSIVE 0
  db eval {
   PRAGMA writable_schema=on;
   UPDATE sqlite_master SET rootpage=$root2
    WHERE name='sqlite_sequence';
   UPDATE sqlite_master SET rootpage=$root1
    WHERE name='fake';
  }
  db close
  sqlite3 db test.db
  set res [catch {db eval {
    INSERT INTO t1(b) VALUES('two');
  }} msg]
  lappend res $msg
} {1 {database disk image is malformed}}
breakpoint
do_test autoinc-12.5 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
    INSERT INTO t1(b) VALUES('one');
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET
       sql='CREATE TABLE sqlite_sequence(x)'
      WHERE name='sqlite_sequence';
  }
  db close
  sqlite3 db test.db
  set res [catch {db eval {
    INSERT INTO t1(b) VALUES('two');
  }} msg]
  lappend res $msg
} {1 {database disk image is malformed}}
do_test autoinc-12.6 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
    INSERT INTO t1(b) VALUES('one');
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET
       sql='CREATE TABLE sqlite_sequence(x,y INTEGER PRIMARY KEY)'
      WHERE name='sqlite_sequence';

  }} msg]
  lappend res $msg
} {0 ok}
do_test autoinc-12.7 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
    INSERT INTO t1(b) VALUES('one');
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET
       sql='CREATE TABLE sqlite_sequence(y INTEGER PRIMARY KEY,x)'
      WHERE name='sqlite_sequence';

do_execsql_test 3.3 { SELECT rowid, * FROM t4 WHERE x!=245; } {}
do_execsql_test 3.4 { SELECT rowid, * FROM t4 WHERE x!='245'; } {}

do_execsql_test 3.5 { SELECT rowid, * FROM t4 WHERE rowid!=1 OR x!='245'; } {}


finish_test

    execsql {
      CREATE TABLE t1(a);
    }
    db close
  } {}
  do_test capi3-8.2 {
    sqlite3 db test.db
    sqlite3_db_config db DEFENSIVE 0
    execsql {
      PRAGMA writable_schema=ON;
      INSERT INTO sqlite_master VALUES(NULL,NULL,NULL,NULL,NULL);
    }
    db close
  } {}
  do_test capi3-8.3 {
    catch { sqlite3 db test.db }
    catchsql {
      SELECT * FROM sqlite_master;
    }
  } {1 {malformed database schema (?)}}
  do_test capi3-8.4 {
    # Build a 5-field row record. The first field is a string 'table', and
    # subsequent fields are all NULL.
    db close
    forcedelete test.db test.db-journal
    sqlite3 db test.db
    sqlite3_db_config db DEFENSIVE 0
    execsql {
      CREATE TABLE t1(a);
      PRAGMA writable_schema=ON;
      INSERT INTO sqlite_master VALUES('table',NULL,NULL,NULL,NULL);
    }
    db close
  } {};

    execsql {
      CREATE TABLE t1(a);
    }
    db close
  } {}
  do_test capi3c-8.2 {
    sqlite3 db test.db
    sqlite3_db_config db DEFENSIVE 0
    execsql {
      PRAGMA writable_schema=ON;
      INSERT INTO sqlite_master VALUES(NULL,NULL,NULL,NULL,NULL);
    }
    db close
  } {}
  do_test capi3c-8.3 {
    catch { sqlite3 db test.db }
    catchsql {
      SELECT * FROM sqlite_master;
    }
  } {1 {malformed database schema (?)}}
  do_test capi3c-8.4 {
    # Build a 5-field row record. The first field is a string 'table', and
    # subsequent fields are all NULL.
    db close
    forcedelete test.db test.db-journal
    sqlite3 db test.db
    sqlite3_db_config db DEFENSIVE 0
    execsql {
      CREATE TABLE t1(a);
      PRAGMA writable_schema=ON;
      INSERT INTO sqlite_master VALUES('table',NULL,NULL,NULL,NULL);
    }
    db close
  } {};

  sqlite3 db test.db
  list
} {}
do_test corrupt-3.2 {
  set t1_r [execsql {SELECT rootpage FROM sqlite_master WHERE name = 't1i1'}]
  set t1i1_r [execsql {SELECT rootpage FROM sqlite_master WHERE name = 't1'}]
  set cookie [expr [execsql {PRAGMA schema_version}] + 1]
  sqlite3_db_config db DEFENSIVE 0
  execsql "
    PRAGMA writable_schema = 1;
    UPDATE sqlite_master SET rootpage = $t1_r WHERE name = 't1';
    UPDATE sqlite_master SET rootpage = $t1i1_r WHERE name = 't1i1';
    PRAGMA writable_schema = 0;
    PRAGMA schema_version = $cookie;
  "

do_test corrupt2-2.1 {

  forcedelete corrupt.db
  forcedelete corrupt.db-journal
  forcecopy test.db corrupt.db

  sqlite3 db2 corrupt.db 
  sqlite3_db_config db2 DEFENSIVE 0
  execsql "
    $::presql
    CREATE INDEX a1 ON abc(a);
    CREATE INDEX a2 ON abc(b);
    PRAGMA writable_schema = 1;
    UPDATE sqlite_master 
      SET name = 'a3', sql = 'CREATE INDEX a3' || substr(sql, 16, 10000)

  array set A $args

  catch {db close}
  forcedelete corrupt.db
  forcedelete corrupt.db-journal

  sqlite3 db corrupt.db 
  sqlite3_db_config db DEFENSIVE 0
  db eval $::presql
  eval $A(-tclprep)
  db eval $A(-sqlprep)
  db close

  eval $A(-corrupt)

  finish_test
  return
}

# Create a database with a freelist containing at least two pages.
#
do_test corrupt5-1.1 {
  sqlite3_db_config db DEFENSIVE 0
  execsql {
    CREATE TABLE t1(a,b,c);
    CREATE INDEX i1 ON t1(a,b);
    PRAGMA writable_schema=ON;
    UPDATE sqlite_master SET name=NULL, sql=NULL WHERE name='i1';
  }
  db close

  PRAGMA auto_vacuum=0;
  CREATE TABLE t1(x PRIMARY KEY, y);
  INSERT INTO t1 VALUES('a', 'A');
  INSERT INTO t1 VALUES('b', 'A');
  INSERT INTO t1 VALUES('c', 'A');
  SELECT name FROM sqlite_master;
} {t1 sqlite_autoindex_t1_1}
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 7.1 {
  PRAGMA writable_schema = 1;
  DELETE FROM sqlite_master WHERE name = 'sqlite_autoindex_t1_1';
}
do_test 7.2 {
  db close
  sqlite3 db test.db

    PRAGMA page_size=1024;
    CREATE TABLE t1(a, b, c);
    CREATE TABLE t2(a, b, c);
    CREATE TABLE t3(a, b, c);
    CREATE TABLE t4(a, b, c);
    CREATE TABLE t5(a, b, c);
  }
  sqlite3_db_config db DEFENSIVE 0
  do_execsql_test 3.2 {
    UPDATE sqlite_dbpage SET data = hex2blob('
   000: 53 51 4c 69 74 65 20 66 6f 72 6d 61 74 20 33 00 SQLite format 3.
   010: 04 00 01 01 20 40 20 20 00 00 3e d9 00 00 00 06 .... @  ..>.....
   020: 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 04 ................
   030: 0f 00 00 00 00 00 00 00 00 00 00 01 00 00 83 00 ................
   040: 00 00 00 00 00 00 00 00 00 00 00 00 00 38 00 00 .............8..

do_execsql_test 1.3 {
  select count(*) from (
    select c from t2 union all select f from t3
  )
} {3}

finish_test

set testprefix dbpage

ifcapable !vtab||!compound {
  finish_test
  return
}

sqlite3_db_config db DEFENSIVE 0
do_test 100 {
  execsql {
    PRAGMA auto_vacuum=0;
    PRAGMA page_size=4096;
    PRAGMA journal_mode=WAL;
  }
  execsql { 

# Do now allow bound parameters in new DEFAULT values. 
# Silently convert bound parameters to NULL in DEFAULT causes
# in the sqlite_master table, for backwards compatibility.
#
db close
forcedelete test.db
sqlite3 db test.db
sqlite3_db_config db DEFENSIVE 0
do_execsql_test default-4.0 {
  CREATE TABLE t1(a TEXT, b TEXT DEFAULT(99));
  PRAGMA writable_schema=ON;
  UPDATE sqlite_master SET sql='CREATE TABLE t1(a TEXT, b TEXT DEFAULT(:xyz))';
} {}
db close 
sqlite3 db test.db

#
set DO_MALLOC_TEST 0
ddl_test   10.1.1 { CREATE VIRTUAL TABLE ta USING fts3 }
write_test 10.1.2 ta_content { 
  INSERT INTO ta VALUES('During a summer vacation in 1790') }
write_test 10.1.3 ta_content {
  INSERT INTO ta VALUES('Wordsworth went on a walking tour') }
sqlite3_db_config db DEFENSIVE 0
write_test 10.1.4 ta_content { DELETE FROM ta_content WHERE rowid = 2 }
read_test  10.1.5 {
  SELECT * FROM ta WHERE ta MATCH 'summer'
} {{During a summer vacation in 1790}}
error_test 10.1.6 {
  SELECT * FROM ta WHERE ta MATCH 'walking'
} {database disk image is malformed}

# EVIDENCE-OF: R-52173-44778 The REINDEX command is used to delete and
# recreate indices from scratch.
#
#    Test this by corrupting some database indexes, running REINDEX, and
#    observing that the corruption is gone.
#
sqlite3_db_config db DEFENSIVE 0
do_execsql_test e_reindex-1.1 {
  INSERT INTO t1 VALUES(1, 2);
  INSERT INTO t1 VALUES(3, 4);
  INSERT INTO t1 VALUES(5, 6);

  CREATE TABLE saved(a,b,c,d,e);
  INSERT INTO saved SELECT * FROM sqlite_master WHERE type = 'index';
  PRAGMA writable_schema = 1;
  DELETE FROM sqlite_master WHERE type = 'index';
} {}

db close
sqlite3 db test.db
sqlite3_db_config db DEFENSIVE 0
do_execsql_test e_reindex-1.2 {
  DELETE FROM t1 WHERE a = 3;
  INSERT INTO t1 VALUES(7, 8);
  INSERT INTO t1 VALUES(9, 10);
  PRAGMA writable_schema = 1;
  INSERT INTO sqlite_master SELECT * FROM saved;
  DROP TABLE saved;

  return [expr $nRow*$pgsz]
}

#    fts3_zero_long_segments TABLE ?LIMIT?
#
proc fts3_zero_long_segments {tbl limit} {
  sqlite3_db_config db DEFENSIVE 0
  execsql " 
    UPDATE ${tbl}_segments 
    SET block = zeroblob(length(block)) 
    WHERE length(block)>$limit
  "
  return [db changes]
}

set ::testprefix fts3corrupt


# Test that a doclist with a length field that indicates that the doclist
# extends past the end of the node on which it resides is correctly identified
# as database corruption.
#
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 1.0 {
  CREATE VIRTUAL TABLE t1 USING fts3;
  INSERT INTO t1 VALUES('hello');
} {}
do_test fts3corrupt-1.1 {
  set blob [db one {SELECT root from t1_segdir}]
  set blob [binary format a7ca* $blob 24 [string range $blob 8 end]]

   "ayjafsraz addjj agsj asejtziqws acatvhegu aoxdjqblsvv aekdmmbs aaobe"
   "abjjvzubkwt alczv ati awz auyxgcxeb aymjoym anqoukprtyt atwfhpmbooh"
   "ajfqz aethlgir aclcx aowlyvetby aproqm afjlqtkv anebfy akzrcpfrrvw"
   "aoledfotm aiwlfm aeejlaej anz abgbvk aktfn aayoh anpywgdvgz"
   "acvmldguld asdvz aqb aeomsyzyu aggylhprbdz asrfkwz auipybpsn agsnszzfb"
}

sqlite3_db_config db DEFENSIVE 0
do_test fts3corrupt2-1.0 {
  execsql BEGIN
  execsql { CREATE VIRTUAL TABLE t2 USING FTS3(a, b); }
  execsql { INSERT INTO t2(t2) VALUES('nodesize=32') }
  foreach d $data {
    execsql { INSERT INTO t2 VALUES($d, $d) }
  }

    INSERT INTO t1 VALUES('one');
    INSERT INTO t1 VALUES('one');
  COMMIT;
}
do_execsql_test 1.1 {
  SELECT quote(root) from t1_segdir;
} {X'00036F6E6509010200010200010200'}
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 1.2 {
  UPDATE t1_segdir SET root = X'00036F6E650EFFFFFFFFFFFFFFFFFFFFFFFF0200';
}
do_catchsql_test 1.3 {
  SELECT rowid FROM t1 WHERE t1 MATCH 'one'
} {0 -1}

proc blob {a} { binary decode hex $a }
db func blob blob

do_execsql_test 1.1 {
  SELECT quote(root) FROM ft_segdir;
} {X'0005616261636B03010200030266740302020003046E646F6E03030200'}

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 1.2 {
  UPDATE ft_segdir SET root = blob(
    '0005616261636B03010200 FFFFFFFF0702 66740302020003046E646F6E03030200'
  );
}

do_catchsql_test 1.3 {

} {12 3}

do_execsql_test 2.2 {
  SELECT quote(block) FROM ft_segments WHERE blockid=2
} {X'00056162633130031F0200'}

db func blob blob
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 2.3.1 {
  UPDATE ft_segments SET block = 
    blob('00056162633130031F0200 FFFFFFFF07FF55 66740302020003046E646F6E03030200')
    WHERE blockid=2;
} {}
do_catchsql_test 2.3.2 {
  INSERT INTO ft(ft) VALUES('merge=1,4');

} {1 5}

do_execsql_test 3.1 {
  SELECT quote(root) FROM ft_segdir
} {X'0101056162633132040136030132030136'}

db func blob blob
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 3.2 {
  UPDATE ft_segdir 
  SET root = blob('0101056162633132FFFFFFFF070236030132030136');
}

do_catchsql_test 3.1 {
  SELECT * FROM ft WHERE ft MATCH 'abc20'
} {1 {database disk image is malformed}}

finish_test

  execsql {
    INSERT INTO t1(t1) VALUES('optimize');
    SELECT substr(hex(root), 1, 2) FROM t1_segdir;
  }
} {03}

# Test the "missing entry" case:
sqlite3_db_config db DEFENSIVE 0
do_test fts3cov-2.2 {
  set root [db one {SELECT root FROM t1_segdir}]
  read_fts3varint [string range $root 1 end] left_child
  execsql { DELETE FROM t1_segments WHERE blockid = $left_child }
} {}
do_error_test fts3cov-2.3 {
  SELECT * FROM t1 WHERE t1 MATCH 'c*'

}
do_execsql_test 15.1 {
  SELECT rowid FROM t15 WHERE t15 MATCH '"abc* def2"'
} {1 2}

# Test a corruption case.
#
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 16.1 {
  CREATE VIRTUAL TABLE t16 USING fts4;
  INSERT INTO t16 VALUES('theoretical work to examine the relationship');
  INSERT INTO t16 VALUES('solution of our problems on the invisible');
  DELETE FROM t16_content WHERE rowid = 2;
}
do_catchsql_test 16.2 {

  execsql {
    SELECT OPTIMIZE(t1) FROM t1 LIMIT 1;
    SELECT level, idx FROM t1_segdir ORDER BY level, idx;
  }
} {{Index already optimal} 1 0}

# Even if we move things around, still does nothing.
sqlite3_db_config db DEFENSIVE 0
do_test fts3d-5.1 {
  execsql {
    UPDATE t1_segdir SET level = 2 WHERE level = 1 AND idx = 0;
    SELECT OPTIMIZE(t1) FROM t1 LIMIT 1;
    SELECT level, idx FROM t1_segdir ORDER BY level, idx;
  }
} {{Index already optimal} 2 0}

  4  {SELECT snippet(t1) FROM t1 WHERE t1 MATCH '"a longer phrase"'}  
     {"an instance of <b>a</b> <b>longer</b> <b>phrase</b>"}
  5  {SELECT rowid FROM t1 WHERE t1 MATCH 'a dog'}                   {1}
}

do_select_tests 1.2 $tests

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 1.3 {
  SELECT count(*) FROM t1_segments WHERE length(block)>10000;
  UPDATE t1_segments 
    SET block = zeroblob(length(block)) 
    WHERE length(block)>10000;
} {1}

    foreach doc $data { execsql { INSERT INTO t1 VALUES($doc) } }
  }
  3 {
    set dmt_modes {0 1 2}
    execsql { CREATE VIRTUAL TABLE t1 USING FTS4 }
    foreach doc $data { execsql { INSERT INTO t1 VALUES($doc) } }
    add_empty_records 1000
    sqlite3_db_config db DEFENSIVE 0
    execsql $zero_long_doclists
  }
  4 {
    set dmt_modes 0
    execsql { CREATE VIRTUAL TABLE t1 USING FTS4 }
    foreach doc $data { execsql { INSERT INTO t1 VALUES($doc) } }
    add_empty_records 1000
    execsql "INSERT INTO t1(t1) VALUES('optimize')"
    sqlite3_db_config db DEFENSIVE 0
    execsql $zero_long_doclists
  }
  5 {
    set dmt_modes 0
    execsql { CREATE VIRTUAL TABLE t1 USING FTS4(matchinfo=fts3) }
    foreach doc $data { execsql { INSERT INTO t1 VALUES($doc) } }
    add_empty_records 1000
    sqlite3_db_config db DEFENSIVE 0
    execsql $zero_long_doclists
  }
} {

  execsql { DROP TABLE IF EXISTS t1 }
  eval $setup
  set ::testprefix fts3defer-2.$tn

  INSERT INTO t1 VALUES('');
  INSERT INTO t1 VALUES('');
  INSERT INTO t1 VALUES('');
  INSERT INTO t1 VALUES('');
  INSERT INTO t1 VALUES('');
  INSERT INTO t1(t1) VALUES('optimize');
}
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 1.1.4 {
  SELECT count(*) FROM t1_segments WHERE length(block)>10000;
  UPDATE t1_segments SET block = zeroblob(length(block)) WHERE length(block)>10000;
} {2}

do_execsql_test 1.2.0 {
  SELECT content FROM t1 WHERE t1 MATCH 'f (e a)';

foreach {tn sql} {
  1 {}
  2 { INSERT INTO t2(t2) VALUES('optimize') }
  3 { UPDATE t2_segments SET block = zeroblob(length(block)) 
      WHERE length(block)>10000;
  }
} {
  sqlite3_db_config db DEFENSIVE 0
  execsql $sql

  do_execsql_test 2.2.$tn.1 {
    SELECT mit(matchinfo(t2, 'pcxnal')) FROM t2 WHERE t2 MATCH 'a b';
  } [list                                          \
    [list 2 1  1 54 54  1 3 3  54 372 8]        \
    [list 2 1  1 54 54  1 3 3  54 372 7]        \

foreach {tn sql} {
  1 {}
  2 { INSERT INTO t3(t3) VALUES('optimize') }
  3 { UPDATE t3_segments SET block = zeroblob(length(block)) 
      WHERE length(block)>10000;
  }
} {
  sqlite3_db_config db DEFENSIVE 0
  execsql $sql
  do_execsql_test 2.4.$tn {
    SELECT docid, mit(matchinfo(t3, 'pcxnal')) FROM t3 WHERE t3 MATCH '"a b c"';
  } {1 {1 1 1 4 4 11 912 6} 3 {1 1 1 4 4 11 912 6}}
}


finish_test

do_matchinfo_test 4.3.4 t5 {t5 MATCH 'a a a'}       { s {3 1} }
do_matchinfo_test 4.3.5 t5 {t5 MATCH '"a b" "a b"'} { s {2} }
do_matchinfo_test 4.3.6 t5 {t5 MATCH 'a OR b'}      { s {1 2 1 1} }

do_execsql_test 4.4.0.1 { INSERT INTO t5(t5) VALUES('optimize') }

ifcapable fts4_deferred {
  sqlite3_db_config db DEFENSIVE 0
  do_execsql_test 4.4.0.2 {
    UPDATE t5_segments 
    SET block = zeroblob(length(block)) 
    WHERE length(block)>10000;
  }
}

  CREATE VIRTUAL TABLE t9 USING fts4;
  INSERT INTO t9 VALUES(
    'this record is used to try to dectect corruption'
  );
  SELECT offsets(t9) FROM t9 WHERE t9 MATCH 'to';
} {{0 0 20 2 0 0 27 2}}

sqlite3_db_config db DEFENSIVE 0
do_catchsql_test 6.2 {
  UPDATE t9_content SET c0content = 'this record is used to'; 
  SELECT offsets(t9) FROM t9 WHERE t9 MATCH 'to';
} {1 {database disk image is malformed}}

#-------------------------------------------------------------------------
# Test the outcome of matchinfo() when used within a query that does not

  execsql { INSERT INTO t11(t11) VALUES('optimize') }
} {}
do_execsql_test 8.3 {
  SELECT mit(matchinfo(t11, 'nxa')) FROM t11 WHERE t11 MATCH 'a*'
} {{204 1 3 3 0} {204 1 3 3 0} {204 1 3 3 0}}

# Corruption related tests.
sqlite3_db_config db DEFENSIVE 0
do_execsql_test  8.4.1.1 { UPDATE t11_stat SET value = X'0000'; }
do_catchsql_test 8.5.1.2 {
  SELECT mit(matchinfo(t11, 'nxa')) FROM t11 WHERE t11 MATCH 'a*'
} {1 {database disk image is malformed}}

do_execsql_test  8.4.2.1 { UPDATE t11_stat SET value = X'00'; }
do_catchsql_test 8.5.2.2 {

  }
  do_execsql_test 4.1 {
    SELECT count(*) FROM t4 WHERE t4 MATCH '"a b c" OR "c a b"'
  } {8000}
  do_execsql_test 4.2 {
    SELECT quote(value) from t4_stat where id=0
  } {X'C03EC0B204C0A608'}
  sqlite3_db_config db DEFENSIVE 0
  do_execsql_test 4.3 {
    UPDATE t4_stat SET value = X'C03EC0B204C0A60800' WHERE id=0;
  }
  do_catchsql_test 4.4 {
    SELECT count(*) FROM t4 WHERE t4 MATCH '"a b c" OR "c a b"'
  } {1 {database disk image is malformed}}
  do_execsql_test 4.5 {

  illegal first argument to %s
} {
  1 "SELECT matchinfo(content) FROM t2 WHERE t2 MATCH 'history'" matchinfo
  2 "SELECT offsets(content) FROM t2 WHERE t2 MATCH 'history'"   offsets
  3 "SELECT snippet(content) FROM t2 WHERE t2 MATCH 'history'"   snippet
  4 "SELECT optimize(content) FROM t2 WHERE t2 MATCH 'history'"  optimize
}
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 5.4.0 { UPDATE t2_content SET c0content = X'1234' }
do_select_tests 5.4 -errorformat {
  illegal first argument to %s
} {
  1 "SELECT matchinfo(content) FROM t2 WHERE t2 MATCH 'history'" matchinfo
  2 "SELECT offsets(content) FROM t2 WHERE t2 MATCH 'history'"   offsets
  3 "SELECT snippet(content) FROM t2 WHERE t2 MATCH 'history'"   snippet

  do_offsets_test $T.2.1 {twohundred} [list 1 0 $off 10]

  set off [string first "onehundred " $numbers]
  do_offsets_test $T.2.2 {onehundred} \
    [list 0 0 $off 10 1 0 $off 10] [list 0 0 $off 10]

  # Test a corruption case:
  sqlite3_db_config db DEFENSIVE 0
  execsql { UPDATE ft_content SET c1b = 'hello world' WHERE c1b = $numbers }
  do_error_test $T.2.3 {
    SELECT offsets(ft) FROM ft WHERE ft MATCH 'onehundred'
  } {database disk image is malformed}
  
  ##########################################################################
  # Test the snippet function.

  }
  3 {
    DELETE FROM t1_segdir WHERE level=0 AND idx=(
      SELECT max(idx) FROM t1_segdir WHERE level=0
    );
  }
} {
  sqlite3_db_config db DEFENSIVE 0
  do_execsql_test  1.2.1.$tn "BEGIN; $disruption"
  do_catchsql_test 1.2.2.$tn {
    INSERT INTO t1 (t1) VALUES('integrity-check')
  } {1 {database disk image is malformed}}
  do_execsql_test  1.2.3.$tn "ROLLBACK"
}

  }
  3 {
    DELETE FROM t2_segdir WHERE level=0 AND idx=(
      SELECT max(idx) FROM t2_segdir WHERE level=1024
    );
  }
} {
  sqlite3_db_config db DEFENSIVE 0
  do_execsql_test  2.2.1.$tn "BEGIN; $disruption"
  do_catchsql_test 2.2.2.$tn {
    INSERT INTO t2 (t2) VALUES('integrity-check')
  } {1 {database disk image is malformed}}
  do_execsql_test  2.2.3.$tn "ROLLBACK"
}

  }
  2 {
    UPDATE t3_content SET langid=langid+1 WHERE rowid = (
      SELECT max(rowid) FROM t3_content
    )
  }
} {
  sqlite3_db_config db DEFENSIVE 0
  do_execsql_test  3.2.1.$tn "BEGIN; $disruption"
  do_catchsql_test 3.2.2.$tn {
    INSERT INTO t3 (t3) VALUES('integrity-check')
  } {1 {database disk image is malformed}}
  do_execsql_test  3.2.3.$tn "ROLLBACK"
}

#--------------------------------------------------------------------------
# Test case 4.*
#
# Test that the integrity-check works if there are "notindexed" columns.
#
do_execsql_test 4.0 {
  CREATE VIRTUAL TABLE t4 USING fts4(a, b, c, notindexed=b);
  INSERT INTO t4 VALUES('text one', 'text two', 'text three');
  INSERT INTO t4(t4) VALUES('integrity-check');
}

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 4.1 {
  PRAGMA writable_schema = 1;
  UPDATE sqlite_master 
    SET sql = 'CREATE VIRTUAL TABLE t4 USING fts4(a, b, c)' 
    WHERE name = 't4';
}

  INSERT INTO t5 VALUES('and the stockmen tell the story of his ride');
}

do_execsql_test 5.1 {
  INSERT INTO t5(t5) VALUES('integrity-check');
} {}

sqlite3_db_config db DEFENSIVE 0
do_catchsql_test 5.2 {
  INSERT INTO t5_content VALUES(5, 'his hardy mountain pony');
  INSERT INTO t5(t5) VALUES('integrity-check');
} {1 {database disk image is malformed}}

do_execsql_test 5.3 ROLLBACK

do_execsql_test 5.4 {
  CREATE VIRTUAL TABLE t5 USING fts4(a, prefix="1,2,3");
  INSERT INTO t5(t5) VALUES('integrity-check');
} {}

finish_test

ifcapable !fts3 {
  finish_test
  return
}

source $testdir/genesis.tcl

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 1.1 { CREATE VIRTUAL TABLE x1 USING fts3; }

do_test 1.2 {
  foreach L {
    {"See here, young man," said Mulga Bill, "from Walgett to the sea,}
    {From Conroy's Gap to Castlereagh, there's none can ride like me.}
    {I'm good all round at everything as everybody knows,}

    } $expect
  }
  
  do_execsql_test 4.4.1 {
    SELECT quote(value) FROM t4_stat WHERE rowid=1
  } {X'0006'}
  
  sqlite3_db_config db DEFENSIVE 0
  do_execsql_test 4.4.2 {
    DELETE FROM t4_stat WHERE rowid=1;
    INSERT INTO t4(t4) VALUES('merge=1,12');
    SELECT level, group_concat(idx, ' ') FROM t4_segdir GROUP BY level;
  } "0 {0 1 2 3 4 5}                     1 0"
  
  

# Argument $db is an open database handle. $tbl is the name of an FTS3/4
# table with the database. This command rearranges the contents of the
# %_segdir table so that all segments within each index are on the same
# level. This means that the 'merge' command can then be used for an
# incremental optimize routine.
#
proc prepare_for_optimize {db tbl} {
  sqlite3_db_config $db DEFENSIVE 0
  $db eval [string map [list % $tbl] {
    BEGIN;
      CREATE TEMP TABLE tmp_segdir(
        level, idx, start_block, leaves_end_block, end_block, root
      );

      INSERT INTO temp.tmp_segdir 

# tested somewhere.
do_test index-18.1 {
  catchsql {
    CREATE TABLE sqlite_t1(a, b, c);
  }
} {1 {object name reserved for internal use: sqlite_t1}}
do_test index-18.1.2 {

  catchsql {
    CREATE TABLE sqlite_t1(a, b, c);
  }
} {1 {object name reserved for internal use: sqlite_t1}}
sqlite3_db_config db DEFENSIVE 0
do_test index-18.2 {
  catchsql {

# This test corrupts the database file so it must be the last test
# in the series.
#
do_test index3-99.1 {
  sqlite3_db_config db DEFENSIVE 0
  execsql {
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET sql='nonsense' WHERE name='t1d'
  }
  db close
  catch { sqlite3 db test.db }
  catchsql { DROP INDEX t1c }

  SELECT ""+3 FROM (SELECT ""+5);
} {3}

# 2015-04-19: NULL pointer dereference on a corrupt schema
#
db close
sqlite3 db :memory:
sqlite3_db_config db DEFENSIVE 0
do_execsql_test misc1-23.1 {
  CREATE TABLE t1(x);
  PRAGMA writable_schema=ON;
  UPDATE sqlite_master SET sql='CREATE table t(d CHECK(T(#0)';
  BEGIN;
  CREATE TABLE t2(y);
  ROLLBACK;
  DROP TABLE IF EXISTS t3;
} {}

# 2015-04-19:  Faulty assert() statement
#
db close
database_may_be_corrupt
sqlite3 db :memory:
sqlite3_db_config db DEFENSIVE 0
do_catchsql_test misc1-23.2 {
  CREATE TABLE t1(x UNIQUE);
  PRAGMA writable_schema=ON;
  UPDATE sqlite_master SET sql='CREATE TABLE IF not EXISTS t(c)';
  BEGIN;
  CREATE TABLE t2(x);
  ROLLBACK;
  DROP TABLE F;
} {1 {no such table: F}}
db close
sqlite3 db :memory:
sqlite3_db_config db DEFENSIVE 0
do_catchsql_test misc1-23.3 {
  CREATE TABLE t1(x UNIQUE);
  PRAGMA writable_schema=ON;
  UPDATE sqlite_master SET sql='CREATE table y(a TEXT, a TEXT)';
  BEGIN;
  CREATE TABLE t2(y);
  ROLLBACK;

  }
} {1}

# 2015-05-15.  Error message formatting problem.
#
db close
sqlite3 db :memory:
sqlite3_db_config db DEFENSIVE 0
do_catchsql_test misc4-7.1 {
  CREATE TABLE t7(x);
  PRAGMA writable_schema=ON;
  UPDATE sqlite_master SET sql='CREATE TABLE [M%s%s%s%s%s%s%s%s%s%s%s%s%s';
  VACUUM;
} {1 {unrecognized token: "[M%s%s%s%s%s%s%s%s%s%s%s%s%s"}}

} {1 {parser stack overflow}}

# Parser stack overflow is silently ignored when it occurs while parsing the
# schema and PRAGMA writable_schema is turned on.
#
do_test misc5-7.2 {
  sqlite3 db2 :memory:
  sqlite3_db_config db2 DEFENSIVE 0
  catchsql {
    CREATE TABLE t1(x UNIQUE);
    PRAGMA writable_schema=ON;
    UPDATE sqlite_master SET sql='CREATE table t(o CHECK(((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((;VALUES(o)';
    BEGIN;
    CREATE TABLE t2(y);
    ROLLBACK;

      }
    } {0 32}
    
    # sqlite3_test_control_pending_page [expr ($::sqlite_pending_byte / 1024) + 1]
    set ::pending_byte_page [expr ($::sqlite_pending_byte / 1024) + 1]
    sqlite3_test_control_pending_byte $::sqlite_pending_byte 
    do_test misc7-17.3 {
      sqlite3_db_config db DEFENSIVE 0
      db eval {
        pragma writable_schema = true;
        UPDATE sqlite_master 
          SET rootpage = $pending_byte_page
          WHERE type = 'table' AND name = 't3';
      }
      execsql {

  BEGIN;
    INSERT INTO t1 VALUES(1);
    INSERT INTO t4 VALUES(1);
  COMMIT;
} {0}

finish_test

do_uses_op_next_test notnull-6.7 "SELECT * FROM t7 WHERE a IS ?" 0
do_uses_op_next_test notnull-6.8 "SELECT * FROM t8 WHERE a IS ?" 0

do_uses_op_next_test notnull-6.9 "SELECT * FROM t8 WHERE a IS ?" 0
do_uses_op_next_test notnull-6.10 "SELECT * FROM t8 WHERE a IS ?" 0

finish_test

    INSERT INTO t1 SELECT a_string(500), a_string(200) FROM t1;
    INSERT INTO t1 SELECT a_string(500), a_string(200) FROM t1;
  }
} {}
do_test pager1-18.2 {
  set root [db one "SELECT rootpage FROM sqlite_master"]
  set lockingpage [expr (0x10000/1024) + 1]
  sqlite3_db_config db DEFENSIVE 0
  execsql {
    PRAGMA writable_schema = 1;
    UPDATE sqlite_master SET rootpage = $lockingpage;
  }
  sqlite3 db2 test.db
  catchsql { SELECT count(*) FROM t1 } db2
} {1 {database disk image is malformed}}

  hexio_write test.db [expr ($pgno-1)*1024] 90000000
  sqlite3 db2 test.db
  catchsql { SELECT length(x||'') FROM t2 } db2
} {1 {database disk image is malformed}}
db2 close
do_test pager1-18.5 {
  sqlite3 db ""
  sqlite3_db_config db DEFENSIVE 0
  execsql {
    CREATE TABLE t1(a, b);
    CREATE TABLE t2(a, b);
    PRAGMA writable_schema = 1;
    UPDATE sqlite_master SET rootpage=5 WHERE tbl_name = 't1';
    PRAGMA writable_schema = 0;
    ALTER TABLE t1 RENAME TO x1;

} {1 {syntax error after column name "b"}}


# Verify that a legacy schema in the sqlite_master file is allowed to have
# COLLATE, ASC, and DESC keywords on the id list of a FK constraint, and that
# those keywords are silently ignored.
#
sqlite3_db_config db DEFENSIVE 0
do_execsql_test parser1-1.2 {
  CREATE TABLE t1(
    a TEXT PRIMARY KEY,
    b TEXT,
    FOREIGN KEY(b) REFERENCES t1(a)
  );
  INSERT INTO t1 VALUES('abc',NULL),('xyz','abc');

    db eval {PRAGMA integrity_check}
  } {ok}
}

# Verify that PRAGMA integrity_check catches UNIQUE and NOT NULL
# constraint violations.
#
sqlite3_db_config db DEFENSIVE 0
do_execsql_test pragma-3.20 {
  CREATE TABLE t1(a,b);
  CREATE INDEX t1a ON t1(a);
  INSERT INTO t1 VALUES(1,1),(2,2),(3,3),(2,4),(NULL,5),(NULL,6);
  PRAGMA writable_schema=ON;
  UPDATE sqlite_master SET sql='CREATE UNIQUE INDEX t1a ON t1(a)'
   WHERE name='t1a';

    PRAGMA page_count;
  } db2
} {210 6000 ok delete 8}

do_test 200 {
  # Thoroughly corrupt the database file by overwriting the first
  # page with randomness.
  sqlite3_db_config db DEFENSIVE 0
  catchsql {
    UPDATE sqlite_dbpage SET data=randomblob(4096) WHERE pgno=1;
    PRAGMA quick_check;
  }
} {1 {unsupported file format}}
do_test 201 {
  catchsql {

    PRAGMA journal_mode;
    PRAGMA page_size;
    PRAGMA page_count;
  } db2
} {210 26000 ok wal 8192 12}

# Corrupt the database again
sqlite3_db_config db DEFENSIVE 0
do_catchsql_test 320 {
  UPDATE sqlite_dbpage SET data=randomblob(8192) WHERE pgno=1;
  PRAGMA quick_check
} {1 {file is not a database}}

do_test 330 {
  catchsql {

} {19 ok}

if {[nonzero_reserved_bytes]} {
  finish_test
  return
}

sqlite3_db_config db DEFENSIVE 0
do_execsql_test 710 {
  UPDATE sqlite_dbpage SET data=
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pgno=1;
}

do_execsql_test 720 {
  PRAGMA integrity_check;

    INSERT INTO t1 VALUES(4, 4);
    CREATE VIEW v1 AS SELECT a, roman(b) FROM t1;
    SELECT * FROM v1;
  } db1
} {1 i 2 ii 3 iii 4 iv}

do_test 1.1 {
  sqlite3_db_config db1 DEFENSIVE 0
  execsql { 
    PRAGMA writable_schema = 1;
    DELETE FROM sqlite_master WHERE 1;
    PRAGMA writable_schema = 0;
    SELECT * FROM sqlite_master;
  } db1
} {}

  execsql { INSERT INTO t2 VALUES('jkl') } 
  execsql BEGIN db2
  list [catch { sqlite3_snapshot_open_blob db2 main $snap } msg] $msg
} {1 SQLITE_ERROR_SNAPSHOT}


finish_test

do_test 1.8 {
  execsql BEGIN db3
  list [catch { sqlite3_snapshot_open_blob db3 main $snap } msg] $msg
} {1 SQLITE_ERROR_SNAPSHOT}

finish_test

  execsql {
    SELECT count(*) FROM t1
  } 
} {100}


finish_test

  set ::res
} {1 SQLITE_BUSY}

sqlite3_snapshot_free $::snap1
sqlite3_snapshot_free $::snap2

finish_test

}

db close
forcedelete {*}[glob test.db*]
forcedelete {*}[glob test_remote.db*]

finish_test

} -body {
  execsql { SELECT a FROM xyz }
} -test {
  faultsim_test_result {0 {1 2 9}} {1 {sql error: out of memory}}
}

finish_test

  }
} {}

do_test table-5.2.2 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
    CREATE TABLE t0(a,b);
    CREATE INDEX t ON t0(a);
    PRAGMA writable_schema=ON;
    UPDATE sqlite_master SET sql='CREATE TABLE a.b(a UNIQUE';
    BEGIN;
    CREATE TABLE t1(x);

  }
} {}

# This test corrupts the database file so it must be the last test
# in the series.
#
do_test trigger7-99.1 {
  sqlite3_db_config db DEFENSIVE 0
  execsql {
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET sql='nonsense';
  }
  db close
  catch { sqlite3 db test.db }
  catchsql { DROP TRIGGER t2r5 }

  do_catchsql_test 1.2.$tn "CREATE TEMP TRIGGER tr1 $defn" [list 1 $errmsg]
}

#-------------------------------------------------------------------------
# Test that variable references within trigger definitions loaded from 
# the sqlite_master table are automatically converted to NULL.
#
sqlite3_db_config db DEFENSIVE 0
do_execsql_test 2.1 {
  PRAGMA writable_schema = 1;
  INSERT INTO sqlite_master VALUES('trigger', 'tr1', 't1', 0,
    'CREATE TRIGGER tr1 AFTER INSERT ON t1 BEGIN 
        INSERT INTO t2 VALUES(?1, ?2); 
     END'
  );

} {five six seven eight nine}

do_execsql_test 5.4 {
  SELECT * FROM cc WHERE two LIKE '6'
} {six 6}

finish_test

} -test {
  faultsim_test_result {0 {}} {1 {initialization of unionvtab failed: }}
}



finish_test

# The following test case exposes an instance in sqlite3_declare_vtab()
# an error message was set using a call similar to sqlite3_mprintf(zErr),
# where zErr is an arbitrary string. This is no good if the string contains
# characters that can be mistaken for printf() formatting directives.
#
do_test vtab1-17.1 {
  sqlite3_db_config db DEFENSIVE 0
  execsql { 
    PRAGMA writable_schema = 1;
    INSERT INTO sqlite_master VALUES(
      'table', 't3', 't3', 0, 'INSERT INTO "%s%s" VALUES(1)'
    );
  }
  catchsql { CREATE VIRTUAL TABLE t4 USING echo(t3); }

  set ::log {}
  execsql { UPDATE "v w" SET "a b" = "a b" || 'x' ORDER BY "a b" LIMIT 5; }
  set ::log
} {ax a bx b cx c dx d ex a}


finish_test

} {1 {sum() may not be used as a window function}}
do_execsql_test 3.1 {
  SELECT sum(a) FROM t1;
} {21}


finish_test

    ORDER BY a;
  }
} -test {
  faultsim_test_result {0 {1 2 5 6 9 10}}
}

finish_test

  INSERT INTO temp.zip (name,data) VALUES ('test1','test'); 
  INSERT INTO temp.zip (name,data) VALUES ('test2','test'); 
  UPDATE OR REPLACE zip SET name='test2' WHERE name='test1';
  SELECT name FROM zip;
} {test2}

finish_test

} {1 {constraint failed}}
do_test genfkey-6.7 {
  execsql {
    SELECT * FROM parent;
    SELECT * FROM child;
  }
} {1 1}