1# 2007 April 25 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 contains additional out-of-memory checks (see malloc.tcl) 12# added to expose a bug in out-of-memory handling for sqlite3_value_text() 13# 14# $Id: malloc8.test,v 1.7 2008/02/18 22:24:58 drh Exp $ 15 16set testdir [file dirname $argv0] 17source $testdir/tester.tcl 18source $testdir/malloc_common.tcl 19 20# Only run these tests if memory debugging is turned on. 21# 22if {!$MEMDEBUG} { 23 puts "Skipping malloc8 tests: not compiled with -DSQLITE_MEMDEBUG..." 24 finish_test 25 return 26} 27 28 29# The setup is a database with UTF-16 encoding that contains a single 30# large string. We will be running lots of queries against this 31# database. Because we will be extracting the string as UTF-8, there 32# is a type conversion that occurs and thus an opportunity for malloc() 33# to fail and for sqlite3_value_text() to return 0 even though 34# sqlite3_value_type() returns SQLITE_TEXT. 35# 36 37do_malloc_test malloc8-1 -sqlprep { 38 PRAGMA encoding='UTF-16'; 39 CREATE TABLE t1(a); 40 INSERT INTO t1 41 VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ'); 42} -sqlbody { 43 SELECT lower(a), upper(a), quote(a), trim(a), trim('x',a) FROM t1; 44} 45do_malloc_test malloc8-2 -sqlprep { 46 PRAGMA encoding='UTF-16'; 47 CREATE TABLE t1(a); 48 INSERT INTO t1 49 VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ'); 50} -sqlbody { 51 SELECT replace(a,'x','y'), replace('x',a,'y'), replace('x','y',a) 52 FROM t1; 53} 54do_malloc_test malloc8-3 -sqlprep { 55 PRAGMA encoding='UTF-16'; 56 CREATE TABLE t1(a); 57 INSERT INTO t1 58 VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ'); 59} -sqlbody { 60 SELECT length(a), substr(a, 4, 4) FROM t1; 61} 62ifcapable datetime { 63 do_malloc_test malloc8-4 -sqlprep { 64 PRAGMA encoding='UTF-16'; 65 CREATE TABLE t1(a); 66 INSERT INTO t1 67 VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ'); 68 } -sqlbody { 69 SELECT julianday(a,a) FROM t1; 70 } 71} 72do_malloc_test malloc8-5 -sqlprep { 73 PRAGMA encoding='UTF-16'; 74 CREATE TABLE t1(a); 75 INSERT INTO t1 76 VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ'); 77} -sqlbody { 78 SELECT 1 FROM t1 WHERE a LIKE 'hello' ESCAPE NULL; 79} 80do_malloc_test malloc8-6 -sqlprep { 81 PRAGMA encoding='UTF-16'; 82 CREATE TABLE t1(a); 83 INSERT INTO t1 84 VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ'); 85} -sqlbody { 86 SELECT hex(randomblob(100)); 87} 88 89# Ensure that no file descriptors were leaked. 90do_test malloc-99.X { 91 catch {db close} 92 set sqlite_open_file_count 93} {0} 94 95finish_test 96