Bug #51936 [Opn->Asn]: Crash with clone xmlreader

From: Date: Thu, 27 May 2010 18:20:31 +0000
Subject: Bug #51936 [Opn->Asn]: Crash with clone xmlreader
References: 1  Groups: php.bugs 
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Edit report at http://bugs.php.net/bug.php?id=51936&edit=1

 ID:          51936
 Updated by:  johannes@php.net
 Reported by: Keisial at gmail dot com
 Summary:     Crash with clone xmlreader
-Status:      Open
+Status:      Assigned
 Type:        Bug
 Package:     XML Reader
 PHP Version: 5.3.2
-Assigned To: 
+Assigned To: rrichards

 New Comment:

#0  0xfffffd7ffb7e92c4 in xmlTextReaderNext () from
/lib/64/libxml2.so.2
#1  0x00000000008661f9 in zim_xmlreader_next (ht=0,
return_value=0xd77f88, 
    return_value_ptr=0x0, this_ptr=0xd79b48, return_value_used=0)
    at
/export/home/johannes/src/php/src/php/php-src/branches/PHP_5_3/ext/xmlreader/php_xmlreader.c:842
#2  0x000000000093b02e in zend_do_fcall_common_helper_SPEC (
    execute_data=0x1025500)
    at
/export/home/johannes/src/php/src/php/php-src/branches/PHP_5_3/Zend/zend_vm_execute.h:313
#3  0x000000000093bc9d in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER (
    execute_data=0x1025500)
    at
/export/home/johannes/src/php/src/php/php-src/branches/PHP_5_3/Zend/zend_vm_execute.h:418
#4  0x000000000093a31d in execute (op_array=0xd77c68)
    at
/export/home/johannes/src/php/src/php/php-src/branches/PHP_5_3/Zend/zend_vm_execute.h:104
#5  0x000000000090c86a in zend_execute_scripts (type=8, retval=0x0, 
    file_count=3)
    at
/export/home/johannes/src/php/src/php/php-src/branches/PHP_5_3/Zend/zend.c:1194
#6  0x00000000008a0c6c in php_execute_script
(primary_file=0xfffffd7fffdff690)
    at
/export/home/johannes/src/php/src/php/php-src/branches/PHP_5_3/main/main.c:2233
#7  0x00000000009e0fe6 in main (argc=1, argv=0xfffffd7fffdff768)
    at
/export/home/johannes/src/php/src/php/php-src/branches/PHP_5_3/sapi/cli/php_cli.c:1192


Previous Comments:
------------------------------------------------------------------------
[2010-05-27 20:02:39] Keisial at gmail dot com

Description:
------------
Trying to use a cloned xmlreader results in a crash (original one can be
used fine).

php 5.3.2
libxml2 2.7.7-1


Test script:
---------------
<?php
$xmlreader = new XMLReader();
$xmlreader->xml("<a><b/></a>");

$xmlreader->next();
$xmlreader2 = clone $xmlreader;
$xmlreader2->next();


Actual result:
--------------
Program received signal SIGSEGV, Segmentation fault in
xmlTextReaderNext__internal_alias ()



------------------------------------------------------------------------



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