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Bug #38623 leaks in a tricky code with switch() and exceptions
Submitted: 2006-08-28 07:54 UTC Modified: 2006-09-19 21:43 UTC
Votes:1
Avg. Score:4.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: tony2001@php.net Assigned: dmitry
Status: Closed Package: Scripting Engine problem
PHP Version: 5CVS-2006-08-28 (CVS) OS: Linux
Private report: No CVE-ID:
 [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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History

AllCommentsChangesGit/SVN commitsRelated reports
 [2006-08-28 09:21 UTC] dmitry@php.net
See also bug #34065
 [2006-09-19 21:43 UTC] dmitry@php.net
Fixed in CVS HEAD and PHP_5_2.
 
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