/ Check-in [8af0caeb6d]
Login

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

Overview
Comment:Early detection of too many columns in an index avoid a possible 16-bit signed integer overflow.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 8af0caeb6d1e55f66ad2f12af94845dccfe1d0420faf326f5917fc07f8aa6050
User & Date: drh 2019-03-31 21:09:33
Context
2019-04-01
03:07
Fix harmless compiler warnings seen with MSVC. check-in: 6cf8b18ec2 user: mistachkin tags: trunk
2019-03-31
21:09
Early detection of too many columns in an index avoid a possible 16-bit signed integer overflow. check-in: 8af0caeb6d user: drh tags: trunk
18:17
Add some missing VdbeCoverage() macros. check-in: d03b611302 user: drh tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/build.c.

3261
3262
3263
3264
3265
3266
3267

3268
3269
3270
3271
3272
3273
3274
....
3279
3280
3281
3282
3283
3284
3285

3286
3287
3288
3289
3290
3291
3292
    pList = sqlite3ExprListAppend(pParse, 0,
              sqlite3ExprAlloc(db, TK_ID, &prevCol, 0));
    if( pList==0 ) goto exit_create_index;
    assert( pList->nExpr==1 );
    sqlite3ExprListSetSortOrder(pList, sortOrder);
  }else{
    sqlite3ExprListCheckLength(pParse, pList, "index");

  }

  /* Figure out how many bytes of space are required to store explicitly
  ** specified collation sequence names.
  */
  for(i=0; i<pList->nExpr; i++){
    Expr *pExpr = pList->a[i].pExpr;
................................................................................
  }

  /* 
  ** Allocate the index structure. 
  */
  nName = sqlite3Strlen30(zName);
  nExtraCol = pPk ? pPk->nKeyCol : 1;

  pIndex = sqlite3AllocateIndexObject(db, pList->nExpr + nExtraCol,
                                      nName + nExtra + 1, &zExtra);
  if( db->mallocFailed ){
    goto exit_create_index;
  }
  assert( EIGHT_BYTE_ALIGNMENT(pIndex->aiRowLogEst) );
  assert( EIGHT_BYTE_ALIGNMENT(pIndex->azColl) );







>







 







>







3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
....
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
    pList = sqlite3ExprListAppend(pParse, 0,
              sqlite3ExprAlloc(db, TK_ID, &prevCol, 0));
    if( pList==0 ) goto exit_create_index;
    assert( pList->nExpr==1 );
    sqlite3ExprListSetSortOrder(pList, sortOrder);
  }else{
    sqlite3ExprListCheckLength(pParse, pList, "index");
    if( pParse->nErr ) goto exit_create_index;
  }

  /* Figure out how many bytes of space are required to store explicitly
  ** specified collation sequence names.
  */
  for(i=0; i<pList->nExpr; i++){
    Expr *pExpr = pList->a[i].pExpr;
................................................................................
  }

  /* 
  ** Allocate the index structure. 
  */
  nName = sqlite3Strlen30(zName);
  nExtraCol = pPk ? pPk->nKeyCol : 1;
  assert( pList->nExpr + nExtraCol <= 32767 /* Fits in i16 */ );
  pIndex = sqlite3AllocateIndexObject(db, pList->nExpr + nExtraCol,
                                      nName + nExtra + 1, &zExtra);
  if( db->mallocFailed ){
    goto exit_create_index;
  }
  assert( EIGHT_BYTE_ALIGNMENT(pIndex->aiRowLogEst) );
  assert( EIGHT_BYTE_ALIGNMENT(pIndex->azColl) );

Changes to test/createtab.test.

8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
...
138
139
140
141
142
143
144
145









146
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing that it is OK to create new tables
# and indices while creating existing tables and indices.
#
# $Id: createtab.test,v 1.3 2007/09/12 17:01:45 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable autovacuum {
  set upperBound 2
} else {
................................................................................
    execsql {
      SELECT name FROM sqlite_master WHERE type='table' ORDER BY 1
    }
  } {t1 t2 t3 t4}
  integrity_check createtab-$av.40

}
  









finish_test







<







 







|
>
>
>
>
>
>
>
>
>

8
9
10
11
12
13
14

15
16
17
18
19
20
21
...
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing that it is OK to create new tables
# and indices while creating existing tables and indices.
#


set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable autovacuum {
  set upperBound 2
} else {
................................................................................
    execsql {
      SELECT name FROM sqlite_master WHERE type='table' ORDER BY 1
    }
  } {t1 t2 t3 t4}
  integrity_check createtab-$av.40

}

# 2019-03-31 Ensure that a proper error is returned for an index
# with too many columns.
#
do_test createtab-3.1 {
  db eval {DROP TABLE IF EXISTS t1;}
  set sql "CREATE TABLE t1(x,UNIQUE(x[string repeat ,x 100000]))"
  catchsql $sql
} {1 {too many columns in index}}
  
finish_test