leaks in a tricky code with switch() and exceptions
| Bug #38623 | leaks in a tricky code with switch() and exceptions | |||||||||||||
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| Submitted: | 2006-08-28 07:54 UTC | Modified: | 2006-09-19 21:43 UTC |
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| From: | tony2001@php.net | Assigned: | dmitry (profile) | |||||||||||
| Status: | Closed | Package: | Scripting Engine problem | |||||||||||
| PHP Version: | 5CVS-2006-08-28 (CVS) | OS: | Linux | |||||||||||
| Private report: | No | CVE-ID: | None | |||||||||||
[2006-08-28 07:54 UTC] tony2001@php.net
Description:
------------
There are several leaks in the code below.
Reproduce code:
---------------
<?php
function test() {
/* this works
$type = "apache";
$l_type = strtolower($type);
switch(l_$type) {
*/
$type = "apache";
switch(strtolower($type)) {
case "apache":
throw new Exception("test");
break;
}
}
try {
test();
} catch (Exception $e) {
echo "the end\n";
}
?>
Expected result:
----------------
.
Actual result:
--------------
[Mon Aug 28 11:48:19 2006] Script: '/tmp/1.php'
/local/dev/orig/php-src_5_2/Zend/zend_vm_execute.h(182) : Freeing 0x4030F19C (16 bytes), script=/tmp/1.php
[Mon Aug 28 11:48:19 2006] Script: '/tmp/1.php'
/local/dev/orig/php-src_5_2/Zend/zend_variables.h(45) : Freeing 0x403113BC (7 bytes), script=/tmp/1.php
/local/dev/orig/php-src_5_2/Zend/zend_variables.c(120) : Actual location (location was relayed)
=== Total 2 memory leaks detected ===
Valgrind says:
==23114== 7 bytes in 1 blocks are indirectly lost in loss record 1 of 2
==23114== at 0x401C4CE: malloc (vg_replace_malloc.c:149)
==23114== by 0x81E5E4B: _emalloc (zend_alloc.c:1628)
==23114== by 0x81E61E5: _estrndup (zend_alloc.c:1752)
==23114== by 0x81FDAE7: _zval_copy_ctor_func (zend_variables.c:120)
==23114== by 0x8180C8D: _zval_copy_ctor (zend_variables.h:45)
==23114== by 0x8175366: zif_strtolower (string.c:1150)
==23114== by 0x821D329: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:200)
==23114== by 0x822021C: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:1657)
==23114== by 0x821CF3C: execute (zend_vm_execute.h:92)
==23114== by 0x821D45E: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:234)
==23114== by 0x822021C: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:1657)
==23114== by 0x821CF3C: execute (zend_vm_execute.h:92)
==23114== by 0x81FF7D9: zend_execute_scripts (zend.c:1095)
==23114== by 0x81B8BB2: php_execute_script (main.c:1759)
==23114== by 0x8264C45: main (php_cli.c:1102)
==23114==
==23114==
==23114== 23 (16 direct, 7 indirect) bytes in 1 blocks are definitely lost in loss record 2 of 2
==23114== at 0x401C4CE: malloc (vg_replace_malloc.c:149)
==23114== by 0x81E5E4B: _emalloc (zend_alloc.c:1628)
==23114== by 0x821D22B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:182)
==23114== by 0x822021C: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:1657)
==23114== by 0x821CF3C: execute (zend_vm_execute.h:92)
==23114== by 0x821D45E: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:234)
==23114== by 0x822021C: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:1657)
==23114== by 0x821CF3C: execute (zend_vm_execute.h:92)
==23114== by 0x81FF7D9: zend_execute_scripts (zend.c:1095)
==23114== by 0x81B8BB2: php_execute_script (main.c:1759)
==23114== by 0x8264C45: main (php_cli.c:1102)
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