From: olaf at 7val dot com
Operating system: Linux
PHP version: 5.1.2
PHP Bug Type: cURL related
Bug description: curl_close causes segfault when accessing members in object
Description:
------------
curl_close causes a segfault when accessing a member variable after the
call (see code below) when CURLOPT_RETURNTRANSFER is true and
CURLOPT_HEADERFUNCTION is set to a member function.
Calling
curl_setopt($this->curl, CURLOPT_HEADERFUNCTION,array(&$this,
'readHeader'));
again in __destruct (before curl_close) makes the segfault go away.
Adding the line:
zval_copy_ctor(ch->handlers->write_header->func_name);
in ext/curl/interface.c line 1152 seems to fix it, but I don't know if it
produces a memory leak.
Reproduce code:
---------------
<?php
class CurlTest {
var $curl;
var $url;
function readHeader($ch, $data)
{
return strlen($data);
}
function __construct($url)
{
$this->curl = curl_init($url);
curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($this->curl, CURLOPT_HEADERFUNCTION, array(&$this,
'readHeader'));
curl_setopt($this->curl, CURLOPT_URL, $url);
$this->url = $url;
}
function __destruct()
{
if (is_resource($this->curl)) {
curl_close($this->curl);
}
$x = $this->url;
}
function exec()
{
curl_exec($this->curl);
}
}
$t = new CurlTest('http://www.google.de');
$t->exec();
$t = null;
?>
Expected result:
----------------
No segfault
Actual result:
--------------
Segfault
--
Edit bug report at http://bugs.php.net/?id=36813&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=36813&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=36813&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=36813&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=36813&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=36813&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=36813&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=36813&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=36813&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=36813&r=support
Expected behavior: http://bugs.php.net/fix.php?id=36813&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=36813&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=36813&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=36813&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36813&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=36813&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=36813&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=36813&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=36813&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=36813&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=36813&r=mysqlcfg
