SQLite

Check-in [cc888878]
Login

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

Overview
Comment:Fix a possible null pointer deref following OOM. Discovered by dbsqlfuzz.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: cc888878ea8d5bc754c69de523819d32d6d9853857e31d7287f9dbfd723428db
User & Date: drh 2020-06-26 04:34:28
Context
2020-06-26
15:32
Add the ieee754_to_blob() and ieee754_from_blob() functions. Fix the handling of subnormal forms in the two-argument version of ieee754(). (check-in: c78cbf2e user: drh tags: trunk)
04:34
Fix a possible null pointer deref following OOM. Discovered by dbsqlfuzz. (check-in: cc888878 user: drh tags: trunk)
2020-06-25
23:21
Update the showlocks utility program so that it functions on files with a huge number of locks without overflowing the stack. (check-in: adb7484f user: drh tags: trunk)
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/expr.c.

︙︙
4266
4267
4268
4269
4270
4271
4272


4273
4274
4275
4276
4277
4278
4279
4280

    }
#ifndef SQLITE_OMIT_SUBQUERY
    case TK_EXISTS:
    case TK_SELECT: {
      int nCol;
      testcase( op==TK_EXISTS );
      testcase( op==TK_SELECT );


      if( op==TK_SELECT && (nCol = pExpr->x.pSelect->pEList->nExpr)!=1 ){
        sqlite3SubselectError(pParse, nCol, 1);
      }else{
        return sqlite3CodeSubselect(pParse, pExpr);
      }
      break;
    }
    case TK_SELECT_COLUMN: {








>
>
|








4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282

    }
#ifndef SQLITE_OMIT_SUBQUERY
    case TK_EXISTS:
    case TK_SELECT: {
      int nCol;
      testcase( op==TK_EXISTS );
      testcase( op==TK_SELECT );
      if( pParse->db->mallocFailed ){
        return 0;
      }else if( op==TK_SELECT && (nCol = pExpr->x.pSelect->pEList->nExpr)!=1 ){
        sqlite3SubselectError(pParse, nCol, 1);
      }else{
        return sqlite3CodeSubselect(pParse, pExpr);
      }
      break;
    }
    case TK_SELECT_COLUMN: {
︙︙

Changes to test/fuzzdata8.db.

cannot compute difference between binary files