276fdbfd61
to sqlite3_prepare() where the nBytes parameter is positive but less than the length of the input SQL string. (CVS 3888) FossilOrigin-Name: 27bf3fc3cf3c9c7acdbf9281a4669c9f642b0097
143 lines
4.4 KiB
Plaintext
143 lines
4.4 KiB
Plaintext
# 2007 April 30
|
|
#
|
|
# 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 contains additional out-of-memory checks (see malloc.tcl)
|
|
# added to expose a bug in out-of-memory handling for sqlite3_prepare().
|
|
#
|
|
# $Id: malloc9.test,v 1.1 2007/04/30 21:39:16 drh Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# Only run these tests if memory debugging is turned on.
|
|
#
|
|
if {[info command sqlite_malloc_stat]==""} {
|
|
puts "Skipping malloc tests: not compiled with -DSQLITE_MEMDEBUG..."
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
# Usage: do_malloc_test <test number> <options...>
|
|
#
|
|
# The first argument, <test number>, is an integer used to name the
|
|
# tests executed by this proc. Options are as follows:
|
|
#
|
|
# -tclprep TCL script to run to prepare test.
|
|
# -sqlprep SQL script to run to prepare test.
|
|
# -tclbody TCL script to run with malloc failure simulation.
|
|
# -sqlbody TCL script to run with malloc failure simulation.
|
|
# -cleanup TCL script to run after the test.
|
|
#
|
|
# This command runs a series of tests to verify SQLite's ability
|
|
# to handle an out-of-memory condition gracefully. It is assumed
|
|
# that if this condition occurs a malloc() call will return a
|
|
# NULL pointer. Linux, for example, doesn't do that by default. See
|
|
# the "BUGS" section of malloc(3).
|
|
#
|
|
# Each iteration of a loop, the TCL commands in any argument passed
|
|
# to the -tclbody switch, followed by the SQL commands in any argument
|
|
# passed to the -sqlbody switch are executed. Each iteration the
|
|
# Nth call to sqliteMalloc() is made to fail, where N is increased
|
|
# each time the loop runs starting from 1. When all commands execute
|
|
# successfully, the loop ends.
|
|
#
|
|
proc do_malloc_test {tn args} {
|
|
array unset ::mallocopts
|
|
array set ::mallocopts $args
|
|
|
|
set ::go 1
|
|
for {set ::n 1} {$::go && $::n < 50000} {incr ::n} {
|
|
do_test malloc9-$tn.$::n {
|
|
|
|
sqlite_malloc_fail 0
|
|
catch {db close}
|
|
catch {file delete -force test.db}
|
|
catch {file delete -force test.db-journal}
|
|
sqlite3 db test.db
|
|
set ::DB [sqlite3_connection_pointer db]
|
|
|
|
# Execute any -tclprep and -sqlprep scripts.
|
|
#
|
|
if {[info exists ::mallocopts(-tclprep)]} {
|
|
eval $::mallocopts(-tclprep)
|
|
}
|
|
if {[info exists ::mallocopts(-sqlprep)]} {
|
|
execsql $::mallocopts(-sqlprep)
|
|
}
|
|
|
|
# Now set the ${::n}th malloc() to fail and execute the -tclbody and
|
|
# -sqlbody scripts.
|
|
#
|
|
sqlite_malloc_fail $::n
|
|
set ::mallocbody {}
|
|
if {[info exists ::mallocopts(-tclbody)]} {
|
|
append ::mallocbody "$::mallocopts(-tclbody)\n"
|
|
}
|
|
if {[info exists ::mallocopts(-sqlbody)]} {
|
|
append ::mallocbody "db eval {$::mallocopts(-sqlbody)}"
|
|
}
|
|
set v [catch $::mallocbody msg]
|
|
|
|
# If the test fails (if $v!=0) and the database connection actually
|
|
# exists, make sure the failure code is SQLITE_NOMEM.
|
|
if {$v && [info command db]=="db" && [info exists ::mallocopts(-sqlbody)]
|
|
&& [db errorcode]!=7} {
|
|
set v 999
|
|
}
|
|
|
|
set leftover [lindex [sqlite_malloc_stat] 2]
|
|
if {$leftover>0} {
|
|
if {$leftover>1} {puts "\nLeftover: $leftover\nReturn=$v Message=$msg"}
|
|
set ::go 0
|
|
if {$v} {
|
|
puts "\nError message returned: $msg"
|
|
} else {
|
|
set v {1 1}
|
|
}
|
|
} else {
|
|
set v2 [expr {$msg=="" || [regexp {out of memory} $msg]}]
|
|
if {!$v2} {puts "\nError message returned: $msg"}
|
|
lappend v $v2
|
|
}
|
|
} {1 1}
|
|
|
|
if {[info exists ::mallocopts(-cleanup)]} {
|
|
catch [list uplevel #0 $::mallocopts(-cleanup)] msg
|
|
}
|
|
}
|
|
unset ::mallocopts
|
|
}
|
|
|
|
|
|
do_malloc_test 1 -tclprep {
|
|
set sql {CREATE TABLE t1(x)}
|
|
set sqlbytes [string length $sql]
|
|
append sql {; INSERT INTO t1 VALUES(1)}
|
|
} -tclbody {
|
|
if {[catch {sqlite3_prepare db $sql $sqlbytes TAIL} STMT]} {
|
|
set msg $STMT
|
|
set STMT {}
|
|
error $msg
|
|
}
|
|
} -cleanup {
|
|
if {$STMT!=""} {
|
|
sqlite3_finalize $STMT
|
|
}
|
|
}
|
|
|
|
# Ensure that no file descriptors were leaked.
|
|
do_test malloc-99.X {
|
|
catch {db close}
|
|
set sqlite_open_file_count
|
|
} {0}
|
|
|
|
sqlite_malloc_fail 0
|
|
finish_test
|