AryaWu/sqlite

1# 2011 February 212#3# The author disclaims copyright to this source code.  In place of4# 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 been14# fixed.  From the ticket:15#16#     The sqlite3ExpirePreparedStatements routine marks all statements17#     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 A23#        * Prepare a statement (B)24#        * Run B and have A run as part of B25#        * A will find a bad cookie and cause *all* statements26#          to be expired including the currently running B by calling27#          sqlite3ExpirePreparedStatements28#        * 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 perfectly32#     valid and then is marked as expired while running.33#34 35set testdir [file dirname $argv0]36source $testdir/tester.tcl37 38ifcapable !compound {39  finish_test40  return41}42 43unset -nocomplain ::STMT44proc runsql {} {45  db eval {CREATE TABLE IF NOT EXISTS t4(q)}46  sqlite3_step $::STMT47  set rc [sqlite3_column_int $::STMT 0]48  sqlite3_reset $::STMT49  return $rc50}51 52do_test tkt-b72787b1.1 {53  db eval {54    CREATE TABLE t1(x);55    INSERT INTO t1 VALUES(1);56    INSERT INTO t1 VALUES(2);57    CREATE TABLE t2(y);58    INSERT INTO t2 SELECT x+2 FROM t1;59    INSERT INTO t2 SELECT x+4 FROM t1;60  }61  db func runsql ::runsql62  set DB [sqlite3_connection_pointer db]63  set sql {SELECT max(x) FROM t1}64  set ::STMT [sqlite3_prepare_v2 $DB $sql -1 TAIL]65 66  # The runsql() call on the second row of the first query will67  # cause all $::STMT to hit an expired cookie.  Prior to the fix68  # for [b72787b1a7, the bad cookie would expire all statements, including69  # the following compound SELECT, which would cause a fault when the70  # second SELECT was reached.  After the fix, the current statement71  # continues to completion.72  db eval {73    SELECT CASE WHEN y=3 THEN y+100 WHEN y==4 THEN runsql()+20074                ELSE 300+y END FROM t275    UNION ALL76    SELECT * FROM t1;77  }78} {103 202 305 306 1 2}79 80sqlite3_finalize $::STMT81 82finish_test83