/ Check-in [ff3b011f]
Login
SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Fix a memory leak in fts5.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: ff3b011f17f4f02e486f3c8de607f62eddf3b86562e2df82dba57ea166994b65
User & Date: dan 2019-01-10 18:35:09
Context
2019-01-10
19:26
Fix a memory leak in fts5 that could occur if scalar function fts5_decode() was passed a corrupt record. check-in: 240f1c0c user: dan tags: trunk
18:35
Fix a memory leak in fts5. check-in: ff3b011f user: dan tags: trunk
17:08
Avoid use-after-free and double-free errors that could occur if an fts5 table is modified in certain ways while there are active cursors. check-in: 3291b2a6 user: dan tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to ext/fts5/fts5_index.c.

3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
    }
  }
  *ppOut = pNew = fts5MultiIterAlloc(p, nSeg);
  if( pNew==0 ) return;
  pNew->bRev = (0!=(flags & FTS5INDEX_QUERY_DESC));
  pNew->bSkipEmpty = (0!=(flags & FTS5INDEX_QUERY_SKIPEMPTY));
  pNew->pColset = pColset;
  fts5StructureRef(pStruct);
  if( (flags & FTS5INDEX_QUERY_NOOUTPUT)==0 ){
    fts5IterSetOutputCb(&p->rc, pNew);
  }

  /* Initialize each of the component segment iterators. */
  if( p->rc==SQLITE_OK ){
    if( iLevel<0 ){







<







3399
3400
3401
3402
3403
3404
3405

3406
3407
3408
3409
3410
3411
3412
    }
  }
  *ppOut = pNew = fts5MultiIterAlloc(p, nSeg);
  if( pNew==0 ) return;
  pNew->bRev = (0!=(flags & FTS5INDEX_QUERY_DESC));
  pNew->bSkipEmpty = (0!=(flags & FTS5INDEX_QUERY_SKIPEMPTY));
  pNew->pColset = pColset;

  if( (flags & FTS5INDEX_QUERY_NOOUTPUT)==0 ){
    fts5IterSetOutputCb(&p->rc, pNew);
  }

  /* Initialize each of the component segment iterators. */
  if( p->rc==SQLITE_OK ){
    if( iLevel<0 ){

Changes to ext/fts5/test/fts5update.test.

129
130
131
132
133
134
135
136
137





138
do_test 3.1 {
  db eval { SELECT * FROM x3('one') } {
    db eval {
      INSERT INTO x3(x3) VALUES('optimize');
    }
  }
} {}

}





finish_test








|
>
>
>
>
>

129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
do_test 3.1 {
  db eval { SELECT * FROM x3('one') } {
    db eval {
      INSERT INTO x3(x3) VALUES('optimize');
    }
  }
} {}


}

reset_db
do_catchsql_test 4.0 { CREATE VIRTUAL TABLE t1 USING fts5(a,b,c); } {0 {}}
do_catchsql_test 4.1 { DELETE FROM t1 WHERE t1 MATCH 'f*'; } {0 {}}
finish_test