1 # 2010 September 20 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 [313723c356] has been 14 # fixed. 15 # 16 17 set testdir [file dirname $argv0] 18 source $testdir/tester.tcl 19 source $testdir/malloc_common.tcl 20 21 ifcapable !wal { finish_test ; return } 22 23 do_execsql_test tkt-313723c356.1 { 24 PRAGMA page_size = 1024; 25 PRAGMA journal_mode = WAL; 26 CREATE TABLE t1(a, b); 27 CREATE INDEX i1 ON t1(a, b); 28 INSERT INTO t1 VALUES(randomblob(400), randomblob(400)); 29 INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1; 30 INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1; 31 INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1; 32 INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1; 33 } {wal} 34 faultsim_save_and_close 35 36 do_faultsim_test tkt-313723c356.2 -faults shmerr* -prep { 37 faultsim_restore_and_reopen 38 sqlite3 db2 test.db 39 db eval { SELECT * FROM t1 } 40 db2 eval { UPDATE t1 SET a = randomblob(399) } 41 db2 close 42 } -body { 43 # At this point, the cache contains all of table t1 and none of index i1. The 44 # cache is out of date. When the bug existed and the right xShmLock() fails 45 # in the following statement, the internal cache of the WAL header was 46 # being updated, but the contents of the page-cache not flushed. This causes 47 # the integrity-check in the "-test" code to fail, as it is comparing the 48 # cached (out-of-date) version of table t1 with the on disk (up-to-date) 49 # version of index i1. 50 # 51 execsql { SELECT min(rowid) FROM t1 } 52 } -test { 53 faultsim_test_result {0 1} 54 faultsim_integrity_check 55 } 56 57 finish_test 58
