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Overview
Comment:Fix a potential dangling pointer deference in an ALTER TABLE run on a schema that contains constructs of the form "PRIMARY KEY(column COLLATE collation)".
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SHA3-256: b9e2393cf201e3fc24519c5ae65d0a5953147d78884e53d44a7958747b4a7e13
User & Date: dan 2019-03-20 16:58:21.326
Context
2019-03-20
18:22
In the CLI, give better error messages if something goes wrong with the ".dbinfo" command. (check-in: 3649a77b79 user: drh tags: trunk)
16:58
Fix a potential dangling pointer deference in an ALTER TABLE run on a schema that contains constructs of the form "PRIMARY KEY(column COLLATE collation)". (check-in: b9e2393cf2 user: dan tags: trunk)
12:08
Fix harmless compiler warnings from MSVC. (check-in: f0f02d46e4 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/build.c.
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  }
  if( nTerm==1
   && pCol
   && sqlite3StrICmp(sqlite3ColumnType(pCol,""), "INTEGER")==0
   && sortOrder!=SQLITE_SO_DESC
  ){
    if( IN_RENAME_OBJECT && pList ){

      sqlite3RenameTokenRemap(pParse, &pTab->iPKey, pList->a[0].pExpr);
    }
    pTab->iPKey = iCol;
    pTab->keyConf = (u8)onError;
    assert( autoInc==0 || autoInc==1 );
    pTab->tabFlags |= autoInc*TF_Autoincrement;
    if( pList ) pParse->iPkSortOrder = pList->a[0].sortOrder;
  }else if( autoInc ){








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  }
  if( nTerm==1
   && pCol
   && sqlite3StrICmp(sqlite3ColumnType(pCol,""), "INTEGER")==0
   && sortOrder!=SQLITE_SO_DESC
  ){
    if( IN_RENAME_OBJECT && pList ){
      Expr *pCExpr = sqlite3ExprSkipCollate(pList->a[0].pExpr);
      sqlite3RenameTokenRemap(pParse, &pTab->iPKey, pCExpr);
    }
    pTab->iPKey = iCol;
    pTab->keyConf = (u8)onError;
    assert( autoInc==0 || autoInc==1 );
    pTab->tabFlags |= autoInc*TF_Autoincrement;
    if( pList ) pParse->iPkSortOrder = pList->a[0].sortOrder;
  }else if( autoInc ){
︙︙
Changes to test/altertab3.test.
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} {1 {error in trigger tr1: no such table: main.t2}}
do_execsql_test 4.2.2 {
  COMMIT;
}
do_execsql_test 4.2.3 {
  SELECT * FROM sqlite_master WHERE type='table' AND name!='t1';
} {table t3 t3 3 {CREATE TABLE t3(e, f)}}



























finish_test










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} {1 {error in trigger tr1: no such table: main.t2}}
do_execsql_test 4.2.2 {
  COMMIT;
}
do_execsql_test 4.2.3 {
  SELECT * FROM sqlite_master WHERE type='table' AND name!='t1';
} {table t3 t3 3 {CREATE TABLE t3(e, f)}}

#-------------------------------------------------------------------------
reset_db
do_execsql_test 5.0 {
  CREATE TABLE t1 (
      c1 integer, c2, PRIMARY KEY(c1 collate rtrim),
      UNIQUE(c2)
  )
}
do_execsql_test 5.1 {
  ALTER TABLE t1 RENAME c1 TO c3;
}

#-------------------------------------------------------------------------
reset_db
do_execsql_test 6.0 {
  CREATE TEMPORARY TABLE Table0 (
    Col0 INTEGER, 
    PRIMARY KEY(Col0 COLLATE RTRIM), 
    FOREIGN KEY (Col0) REFERENCES Table0
  );
}

do_execsql_test 6.1 {
  ALTER TABLE Table0 RENAME Col0 TO Col0;
}

finish_test