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