mirror of https://github.com/sqlite/sqlite
Add a test case to trigger an assertion fault when running
sqlite3_prepare16() with a predefined string size. (CVS 3337) FossilOrigin-Name: 93878e6ebf703be022f83fd670c1aaaf7d4f1266
This commit is contained in:
drh
parent
15ca1df1bf
commit
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11
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11
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@ -1,5 +1,5 @@
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C More\swork\stoward\sgetting\ssqlite3_interrupt()\sto\swork\sfrom\sseparate\nthreads.\s\sTicket\s#1897.\s(CVS\s3336)
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D 2006-07-26T13:43:31
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C Add\sa\stest\scase\sto\strigger\san\sassertion\sfault\swhen\srunning\nsqlite3_prepare16()\swith\sa\spredefined\sstring\ssize.\s(CVS\s3337)
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D 2006-07-26T14:49:19
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F Makefile.in 9c2a76055c305868cc5f5b73e29a252ff3632c0a
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F Makefile.linux-gcc 2d8574d1ba75f129aba2019f0b959db380a90935
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F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
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@ -207,6 +207,7 @@ F test/malloc3.test fd4186bee73c2a2638f4e2a05a684c06836f725b
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F test/malloc4.test 59cd02f71b363302a04c4e77b97c0a1572eaa210
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F test/malloc5.test 7425272e263325fda7d32cb55706e52b5c09e7e0
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F test/malloc6.test 025ae0b78542e0ddd000d23f79d93e9be9ba0f15
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F test/malloc7.test 436b90dbe4a22a2f5309124f3b13ff33082e162d
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F test/manydb.test 8de36b8d33aab5ef295b11d9e95310aeded31af8
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F test/memdb.test a67bda4ff90a38f2b19f6c7f95aa7289e051d893
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F test/memleak.test df2b2b96e77f8ba159a332299535b1e5f18e49ac
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@ -376,7 +377,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
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F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
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F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
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F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
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P 35fd67d7a0c55797eb460e3bd02c96afe619f026
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R 81058f7cc0073e22a60fae6f780adbf1
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P e431131d47481f9fc64c498e8934b10a96b0a931
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R 7e8761d6a912e35c00881f2d7e6d80bf
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U drh
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Z 506916b1bf3ff2edf2b1a6a42bca76f1
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Z 2f225d06d095b7c64a3eddb40e300558
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@ -1 +1 @@
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e431131d47481f9fc64c498e8934b10a96b0a931
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93878e6ebf703be022f83fd670c1aaaf7d4f1266
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@ -0,0 +1,149 @@
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# 2001 September 15
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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 attempts to check the library in an out-of-memory situation.
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# When compiled with -DSQLITE_DEBUG=1, the SQLite library accepts a special
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# command (sqlite_malloc_fail N) which causes the N-th malloc to fail. This
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# special feature is used to see what happens in the library if a malloc
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# were to really fail due to an out-of-memory situation.
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#
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# $Id: malloc7.test,v 1.1 2006/07/26 14:49:19 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Only run these tests if memory debugging is turned on.
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#
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if {[info command sqlite_malloc_stat]==""} {
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puts "Skipping malloc tests: not compiled with -DSQLITE_MEMDEBUG..."
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finish_test
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return
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}
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# Usage: do_malloc_test <test number> <options...>
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#
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# The first argument, <test number>, is an integer used to name the
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# tests executed by this proc. Options are as follows:
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#
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# -tclprep TCL script to run to prepare test.
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# -sqlprep SQL script to run to prepare test.
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# -tclbody TCL script to run with malloc failure simulation.
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# -sqlbody TCL script to run with malloc failure simulation.
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# -cleanup TCL script to run after the test.
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#
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# This command runs a series of tests to verify SQLite's ability
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# to handle an out-of-memory condition gracefully. It is assumed
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# that if this condition occurs a malloc() call will return a
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# NULL pointer. Linux, for example, doesn't do that by default. See
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# the "BUGS" section of malloc(3).
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#
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# Each iteration of a loop, the TCL commands in any argument passed
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# to the -tclbody switch, followed by the SQL commands in any argument
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# passed to the -sqlbody switch are executed. Each iteration the
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# Nth call to sqliteMalloc() is made to fail, where N is increased
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# each time the loop runs starting from 1. When all commands execute
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# successfully, the loop ends.
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#
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proc do_malloc_test {tn args} {
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array unset ::mallocopts
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array set ::mallocopts $args
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set ::go 1
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for {set ::n 1} {$::go && $::n < 50000} {incr ::n} {
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do_test malloc7-$tn.$::n {
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# Remove all traces of database files test.db and test2.db from the files
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# system. Then open (empty database) "test.db" with the handle [db].
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#
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sqlite_malloc_fail 0
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catch {db close}
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catch {file delete -force test.db}
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catch {file delete -force test.db-journal}
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catch {file delete -force test2.db}
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catch {file delete -force test2.db-journal}
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catch {sqlite3 db test.db}
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set ::DB [sqlite3_connection_pointer db]
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# Execute any -tclprep and -sqlprep scripts.
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#
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if {[info exists ::mallocopts(-tclprep)]} {
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eval $::mallocopts(-tclprep)
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}
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if {[info exists ::mallocopts(-sqlprep)]} {
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execsql $::mallocopts(-sqlprep)
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}
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# Now set the ${::n}th malloc() to fail and execute the -tclbody and
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# -sqlbody scripts.
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#
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sqlite_malloc_fail $::n
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set ::mallocbody {}
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if {[info exists ::mallocopts(-tclbody)]} {
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append ::mallocbody "$::mallocopts(-tclbody)\n"
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}
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if {[info exists ::mallocopts(-sqlbody)]} {
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append ::mallocbody "db eval {$::mallocopts(-sqlbody)}"
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}
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set v [catch $::mallocbody msg]
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# If the test fails (if $v!=0) and the database connection actually
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# exists, make sure the failure code is SQLITE_NOMEM.
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if {$v && [info command db]=="db" && [info exists ::mallocopts(-sqlbody)]
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&& [db errorcode]!=7} {
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set v 999
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}
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set leftover [lindex [sqlite_malloc_stat] 2]
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if {$leftover>0} {
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if {$leftover>1} {puts "\nLeftover: $leftover\nReturn=$v Message=$msg"}
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set ::go 0
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if {$v} {
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puts "\nError message returned: $msg"
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} else {
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set v {1 1}
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}
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} else {
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set v2 [expr {$msg=="" || $msg=="out of memory"}]
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if {!$v2} {puts "\nError message returned: $msg"}
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lappend v $v2
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}
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} {1 1}
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if {[info exists ::mallocopts(-cleanup)]} {
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catch [list uplevel #0 $::mallocopts(-cleanup)] msg
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}
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}
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unset ::mallocopts
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}
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db eval {
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CREATE TABLE t1(a,b,c,d);
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CREATE INDEX i1 ON t1(b,c);
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}
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do_malloc_test 1 -tclbody {
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set sql16 [encoding convertto unicode "SELECT * FROM sqlite_master"]
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append sql16 "\00\00"
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set nbyte [string length $sql16]
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set ::STMT [sqlite3_prepare16 $::DB $sql16 $nbyte DUMMY]
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sqlite3_finalize $::STMT
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}
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# Ensure that no file descriptors were leaked.
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do_test malloc-99.X {
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catch {db close}
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set sqlite_open_file_count
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} {0}
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puts open-file-count=$sqlite_open_file_count
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sqlite_malloc_fail 0
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finish_test
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