wasCSharpSQLite – Blame information for rev 1
?pathlinks?
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | office | 1 | # 2011 February 21 |
| 2 | # |
||
| 3 | # The author disclaims copyright to this source code. In place of |
||
| 4 | # a legal notice, here is a blessing: |
||
| 5 | # |
||
| 6 | # May you do good and not evil. |
||
| 7 | # May you find forgiveness for yourself and forgive others. |
||
| 8 | # May you share freely, never taking more than you give. |
||
| 9 | # |
||
| 10 | #*********************************************************************** |
||
| 11 | # This file implements regression tests for SQLite library. |
||
| 12 | # |
||
| 13 | # This file implements tests to verify that ticket [b72787b1a7] has been |
||
| 14 | # fixed. From the ticket: |
||
| 15 | # |
||
| 16 | # The sqlite3ExpirePreparedStatements routine marks all statements |
||
| 17 | # as expired. This includes statements that are not expired. |
||
| 18 | # |
||
| 19 | # Steps to reproduce: |
||
| 20 | # |
||
| 21 | # * Prepare a statement (A) |
||
| 22 | # * Alter the schema to invalidate cookie in A |
||
| 23 | # * Prepare a statement (B) |
||
| 24 | # * Run B and have A run as part of B |
||
| 25 | # * A will find a bad cookie and cause *all* statements |
||
| 26 | # to be expired including the currently running B by calling |
||
| 27 | # sqlite3ExpirePreparedStatements |
||
| 28 | # * When control returns to B it will then abort |
||
| 29 | # |
||
| 30 | # The bug is that sqlite3ExpirePreparedStatements expires all statements. |
||
| 31 | # Note that B was prepared after the schema change and hence is perfectly |
||
| 32 | # valid and then is marked as expired while running. |
||
| 33 | # |
||
| 34 | |||
| 35 | set testdir [file dirname $argv0] |
||
| 36 | source $testdir/tester.tcl |
||
| 37 | |||
| 38 | unset -nocomplain ::STMT |
||
| 39 | proc runsql {} { |
||
| 40 | db eval {CREATE TABLE IF NOT EXISTS t4(q)} |
||
| 41 | sqlite3_step $::STMT |
||
| 42 | set rc [sqlite3_column_int $::STMT 0] |
||
| 43 | sqlite3_reset $::STMT |
||
| 44 | return $rc |
||
| 45 | } |
||
| 46 | |||
| 47 | do_test tkt-b72787b1.1 { |
||
| 48 | db eval { |
||
| 49 | CREATE TABLE t1(x); |
||
| 50 | INSERT INTO t1 VALUES(1); |
||
| 51 | INSERT INTO t1 VALUES(2); |
||
| 52 | CREATE TABLE t2(y); |
||
| 53 | INSERT INTO t2 SELECT x+2 FROM t1; |
||
| 54 | INSERT INTO t2 SELECT x+4 FROM t1; |
||
| 55 | } |
||
| 56 | db func runsql ::runsql |
||
| 57 | set DB [sqlite3_connection_pointer db] |
||
| 58 | set sql {SELECT max(x) FROM t1} |
||
| 59 | set ::STMT [sqlite3_prepare_v2 $DB $sql -1 TAIL] |
||
| 60 | |||
| 61 | # The runsql() call on the second row of the first query will |
||
| 62 | # cause all $::STMT to hit an expired cookie. Prior to the fix |
||
| 63 | # for [b72787b1a7, the bad cookie would expire all statements, including |
||
| 64 | # the following compound SELECT, which would cause a fault when the |
||
| 65 | # second SELECT was reached. After the fix, the current statement |
||
| 66 | # continues to completion. |
||
| 67 | db eval { |
||
| 68 | SELECT CASE WHEN y=3 THEN y+100 WHEN y==4 THEN runsql()+200 |
||
| 69 | ELSE 300+y END FROM t2 |
||
| 70 | UNION ALL |
||
| 71 | SELECT * FROM t1; |
||
| 72 | } |
||
| 73 | } {103 202 305 306 1 2} |
||
| 74 | |||
| 75 | sqlite3_finalize $::STMT |
||
| 76 | |||
| 77 | finish_test |