gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/tkt-b72787b1.test (about) 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 ifcapable !compound { 39 finish_test 40 return 41 } 42 43 unset -nocomplain ::STMT 44 proc runsql {} { 45 db eval {CREATE TABLE IF NOT EXISTS t4(q)} 46 sqlite3_step $::STMT 47 set rc [sqlite3_column_int $::STMT 0] 48 sqlite3_reset $::STMT 49 return $rc 50 } 51 52 do_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 ::runsql 62 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 will 67 # cause all $::STMT to hit an expired cookie. Prior to the fix 68 # for [b72787b1a7, the bad cookie would expire all statements, including 69 # the following compound SELECT, which would cause a fault when the 70 # second SELECT was reached. After the fix, the current statement 71 # continues to completion. 72 db eval { 73 SELECT CASE WHEN y=3 THEN y+100 WHEN y==4 THEN runsql()+200 74 ELSE 300+y END FROM t2 75 UNION ALL 76 SELECT * FROM t1; 77 } 78 } {103 202 305 306 1 2} 79 80 sqlite3_finalize $::STMT 81 82 finish_test