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Bug #79536 zend_clear_exception can not call exception destructor
Submitted: 2020-04-29 10:55 UTC Modified: -
From: laruence@php.net Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 7.3.17 OS:
Private report: No CVE-ID: None
 [2020-04-29 10:55 UTC] laruence@php.net
Description:
------------
zend_clear_exception:

   OBJ_RELEASE(EG(exception));

if the exception is refcount 1, and has __destruct, the destructor can not be called because EG(exception) is set.



Test script:
---------------
it could be seen by soap.
<?php
$GLOBALS['HTTP_RAW_POST_DATA']="
<env:Envelope xmlns:env=\"http://schemas.xmlsoap.org/soap/envelope/\"
	xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
	xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"
	xmlns:enc=\"http://schemas.xmlsoap.org/soap/encoding/\"
	xmlns:ns1=\"http://schemas.nothing.com\"
>
  <env:Body>
<ns1:dotest2>
<dotest2 xsi:type=\"xsd:string\">???</dotest2>
</ns1:dotest2>
 </env:Body>
<env:Header/>
</env:Envelope>";

class myFault extends SoapFault {
	public function __destruct() {
	}
}

function book_to_xml($book) {
	throw new myFault("Server", "Conversion Fault");
}

class test{
	function dotest2($str){
		$book = new book;
		$book->a = "foo";
		$book->b = "bar";
		return $book;
	}
}

class book{
	public $a="a";
	public $b="c";

}

$options=Array(
		'actor'   =>'http://schemas.nothing.com',
		'typemap' => array(array("type_ns"   => "http://schemas.nothing.com",
		                         "type_name" => "book",
		                         "to_xml"    => "book_to_xml"))
		);

$server = new SoapServer(__DIR__."/classmap.wsdl",$options);
$server->setClass("test");
$server->handle($HTTP_RAW_POST_DATA);
echo "ok\n";

Expected result:
----------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Body><SOAP-ENV:Fault><faultcode>SOAP-ENV:Server</faultcode><faultstring>Conversion Fault</faultstring></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope>
ok

Actual result:
--------------
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Body><SOAP-ENV:Fault><faultcode>SOAP-ENV:Server</faultcode><faultstring>Attempt to destruct pending exception</faultstring></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope>

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 [2020-04-29 10:59 UTC] laruence@php.net
Automatic comment on behalf of laruence@gmail.com
Revision: http://git.php.net/?p=php-src.git;a=commit;h=8555c2bff01291e00e4e6af9f0df3b4fe848a390
Log: Fixed bug #79536 (zend_clear_exception prevent exception's destructor to be called).
 [2020-04-29 10:59 UTC] laruence@php.net
-Status: Open +Status: Closed
 
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