/trunk/test/tkt-b72787b1.test |
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# 2011 February 21 |
# |
# The author disclaims copyright to this source code. In place of |
# a legal notice, here is a blessing: |
# |
# May you do good and not evil. |
# May you find forgiveness for yourself and forgive others. |
# May you share freely, never taking more than you give. |
# |
#*********************************************************************** |
# This file implements regression tests for SQLite library. |
# |
# This file implements tests to verify that ticket [b72787b1a7] has been |
# fixed. From the ticket: |
# |
# The sqlite3ExpirePreparedStatements routine marks all statements |
# as expired. This includes statements that are not expired. |
# |
# Steps to reproduce: |
# |
# * Prepare a statement (A) |
# * Alter the schema to invalidate cookie in A |
# * Prepare a statement (B) |
# * Run B and have A run as part of B |
# * A will find a bad cookie and cause *all* statements |
# to be expired including the currently running B by calling |
# sqlite3ExpirePreparedStatements |
# * When control returns to B it will then abort |
# |
# The bug is that sqlite3ExpirePreparedStatements expires all statements. |
# Note that B was prepared after the schema change and hence is perfectly |
# valid and then is marked as expired while running. |
# |
|
set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
|
unset -nocomplain ::STMT |
proc runsql {} { |
db eval {CREATE TABLE IF NOT EXISTS t4(q)} |
sqlite3_step $::STMT |
set rc [sqlite3_column_int $::STMT 0] |
sqlite3_reset $::STMT |
return $rc |
} |
|
do_test tkt-b72787b1.1 { |
db eval { |
CREATE TABLE t1(x); |
INSERT INTO t1 VALUES(1); |
INSERT INTO t1 VALUES(2); |
CREATE TABLE t2(y); |
INSERT INTO t2 SELECT x+2 FROM t1; |
INSERT INTO t2 SELECT x+4 FROM t1; |
} |
db func runsql ::runsql |
set DB [sqlite3_connection_pointer db] |
set sql {SELECT max(x) FROM t1} |
set ::STMT [sqlite3_prepare_v2 $DB $sql -1 TAIL] |
|
# The runsql() call on the second row of the first query will |
# cause all $::STMT to hit an expired cookie. Prior to the fix |
# for [b72787b1a7, the bad cookie would expire all statements, including |
# the following compound SELECT, which would cause a fault when the |
# second SELECT was reached. After the fix, the current statement |
# continues to completion. |
db eval { |
SELECT CASE WHEN y=3 THEN y+100 WHEN y==4 THEN runsql()+200 |
ELSE 300+y END FROM t2 |
UNION ALL |
SELECT * FROM t1; |
} |
} {103 202 305 306 1 2} |
|
sqlite3_finalize $::STMT |
|
finish_test |