ID: 32981 User updated by: phpbug at swift-web dot com Reported By: phpbug at swift-web dot com -Status: No Feedback +Status: Open Bug Type: Reproducible crash Operating System: Gentoo 2.6.11 PHP Version: 5.0CVS (2005-05-09) New Comment:
Sorry for the long delay in getting back to this. Tried using just a
plain php install as suggested (./configure --enable-debug
--with-apxs2=/usr/sbin/apxs2) and I was still getting the seg fault
error consistently on two different test boxes.
I tried looking at my code again and came up with an idea.
if a class has the static variables defined within the class but
outside the methods eg:
class test {
private static $test = true;
public function test_method() {
// do whatever and access the
// static property as: self::$test
}
}
then no seg faults occur when I dump this classes details with my
"dump" class which uses ReflectionMethod::getStaticVariables().
If however the above class is done this way instead (with the static
value only used in the method not in entire class):
class test {
public function test_method() {
static $test = true;
// do whatever and access the
// static property just as $test
}
}
Then using my debug dump class to display information about the class
causes a seg fault. I haven't given you my debug/dump class, maybe
this is what you need to reproduce the seg fault crash. I'll include
the class below.
To use the dump class I simply call it statically
debug::dump($new = new test(),'test class',true,true);
*(replace test() with the name of the class you want information about
obviously but my test about used the name test)
here is the class
////////// start of php code
class debug{
/**
* dump out variables to easy to read html tables
* variable can be array, string, boolean, object or hash mixture
*
* @param mix $data variable to be dumped
* str $label optional top label for table
* boo $show_docs true = show documentation for an
object
item
* false (default) = do not show docs
for
an object item
* boo $public_only true (default) = when
displaying objects
only
* show public items
* false
= show everything about the object
*
* returns html output
*/
final public static function
dump($data,$label='',$show_docs=false,$public_only=true) {
// make sure public_only & show_docs is just true or
false
$public_only = ($public_only != false) ? true : false;
$show_docs = ($show_docs != false) ? true : false;
// setup styles for html output
$style['key'] = 'font-family: sans-serif; text-align:
right;
font-size: 12px; font-weight: bold; background-color: #000; color:
#f0f0f0;';
$style['value'] = 'font-family: sans-serif; font-size:
11px; color:
#009; background-color: #eee'; // monospace
$style['type'] = 'font-family: sans-serif; text-align:
center;
font-size: 12px; background-color: #9cc; color: #600;';//#F6F6F6
$output = '<table border="2" bordercolor="#000080"
cellpadding="0"
cellspacing="0"><tr><td style="font-family: sans-serif; font-size:
14px; background-color: #000080; color: white;">'.($label != '' ?
$label : 'variable dump - no variable name passed').'</td></tr><tr><td
style="font-family: sans-serif; text-align: center; font-size: 12px;
background-color: #9cc; color:
#600;">'.gettype($data).'</td></tr><tr><td>';
return($output.ss_debug::dump_html_table($data,$style,$show_docs,$public_only).'</td></tr></table><br
/>');
}
/**
* used privately by dump method
*/
final private static function
dump_html_table($data,&$style,$show_docs,$public_only) {
if (!is_array($data)) {
if ($data === NULL) {
return('--NULL--');
}
switch (gettype($data)) {
case 'string':
//if ($data === NULL) {
//return('--NULL--');
//}
return ( isset ( $data ) &&
!empty ( $data ) ) ?
'<pre>'.htmlentities($data)."</pre>" : ' ';
break; // string
case 'boolean':
return($data ? 'true' :
'false');
break; // boolean
case 'object':
// search patterns to replace
wasted front whitespace or empty
lines
$doc_search = array('/^(\t|
)*\/\*\*/','/^(\t| )*/m','/^(\t|
)*(\*\/)?(\t| )*(\n)?$/m','/^(\w|\*|\r|\n)*$/m');
// convert object to array (so
we can find private and protected
properties)
$raw_properties = (array)$data;
// Create an instance of the
ReflectionClass class to give us
more detailed info
$class = new
ReflectionClass(get_class($data));
$class_name = $class->getName();
// get method info
$methods = $properties =
array();
foreach ($class->getMethods()
as $method) {
if ($method->isPublic()
|| $public_only !== true) {
$result =
array();
$name = '<font
color="grey">';
if
($method->isPublic()) {
$name
.= '<i>public</i> ';
} elseif
($method->isPrivate()) {
$name
.= '<i>private</i> ';
} elseif
($method->isProtected()) {
$name
.= '<i>protected</i> ';
}
if
($method->isStatic()) {
$name
.= '<i>static</i> ';
}
if
($method->isAbstract()) {
$name
.= '<i>abstract</i> ';
}
if
($method->isFinal()) {
$name
.= '<i>final</i> ';
}
$name .=
'</font>'.$method->getName();
if ($show_docs
=== true) {
$result['docs'] = $method->getDocComment();
if
($result['docs'] == false) {
unset($result['docs']);
} else {
$result['docs'] =
preg_replace($doc_search,'',$result['docs']);
}
}
$result['params'] = '';
foreach($method->getParameters() as $parameter) {
$result['params'] .= $parameter->__toString().", \n";
}
if
($result['params'] == false) {
unset($result['params']);
} else {
$result['params'] = substr($result['params'],0,-3);
}
$result['info']
= '';
if
($method->isConstructor()) {
$result['info'] .= 'constructor, ';
}
/* does not
appear to work
if
($method->isDestructor()) {
$result['info'] .= 'destructor, ';
}
*/
if
($method->isInternal()) {
$result['info'] .= 'internal (built-into php)';
} else {
$result['info'] .= 'user-defined (lines
'.$method->getStartLine().' - '.$method->getEndline().')';
}
/* TODO: this
is commented out because of a bug in the gentoo
php installation, where if the static variables still contain there
* default
values then this causes a seg fault error
*/
$result['static
vars'] = $method->getStaticVariables();
if
($result['static vars'] == array()) {
unset($result['static vars']);
}
// */
$methods[$name]
= $result;
}
}
// get property info
foreach
($class->getProperties() as $prop) {
$prop_name =
$prop->getName();
$result = array();
$name = '<font
color="grey">';
if ($prop->isDefault())
{
$name .=
'<i><default></i> ';
}
if ($prop->isPublic()) {
$name .=
'<i>public</i> ';
} elseif
($prop->isPrivate()) {
if
($public_only === true) {
break;
}
$name .=
'<i>private</i> ';
} elseif
($prop->isProtected()) {
if
($public_only === true) {
break;
}
$name .=
'<i>protected</i> ';
}
if ($prop->isStatic()) {
$name .=
'<i>static</i> ';
}
$name .=
"</font>$prop_name";
$found = false;
foreach
($raw_properties as $key => $value) {
if
(strpos($key,$prop_name,(strlen($key)-strlen($prop_name))))
{
$properties[$name] = $value;
$found
= true;
unset($raw_properties[$key]);
break;
}
}
if ($found === false) {
$properties[$name] = NULL;
}
}
// get class info
$keywords =
$class->isAbstract() ? 'abstract ' : '';
$keywords .= $class->isFinal()
? 'final ' : '';
$keywords .= $class_name;
$parent =
$class->getParentClass();
$parent = (array)$parent;
if (isset($parent['name'])) {
$keywords .= ' extends
'.$parent['name'];
}
$obj_data['class'] = $keywords;
$obj_data['declared in'] =
$class->getFileName().' (lines
'.$class->getStartLine().' - '.$class->getEndline().')';
if ($show_docs === true) {
$obj_data['docs'] =
$class->getDocComment();
if ($obj_data['docs']
== false) {
unset($obj_data['docs']);
} else {
$obj_data['docs'] =
preg_replace($doc_search,'',$obj_data['docs']);
}
}
// removed following line
interface (not interfaces) as it seemed
to always be coming up as class (not sure what an interface is)
//$obj_data['interface'] =
$class->isInterface() ? 'interface' :
'class';
// removed following line from
above as it seemed to display info
I already have elsewhere
//$obj_data['modifiers'] =
sprintf('%d
[%s]',$class->getModifiers(),implode(' ',
Reflection::getModifierNames($class->getModifiers())));
$obj_data['interfaces'] =
($class->getInterfaces() == array() &&
count($class->getInterfaces()) > 0) ?
var_export($class->getInterfaces(),1) : 'none';
$obj_data['constants'] =
(($class->getConstants() == array() &&
count($class->getConstants()) > 0) ? $class->getConstants() : 'none');
$obj_data['static properties']
= $class->getStaticProperties();
$obj_data['properties'] =
$properties;
$obj_data['methods'] = $methods;
// unset empty fields to save
space
if ($obj_data['interfaces'] ==
'none') {
unset($obj_data['interfaces']);
}
if ($obj_data['constants'] ==
'none') {
unset($obj_data['constants']);
}
/* commented it out above so no
need to clean it out
if ($obj_data['modifiers']{0}
== '0') {
unset($obj_data['modifiers']);
}
*/
if ($obj_data['static
properties'] == array()) {
unset($obj_data['static
properties']);
}
if ($obj_data['properties'] ==
array()) {
unset($obj_data['properties']);
}
/* old method used in php4 (did
not show extra php5 info like
private, public, etc)
* and it only showed public
properties
$object_data = array (
'class' =>
get_class($data),
'parent_class' =>
get_parent_class($data),
'methods'
=> get_class_methods(get_class($data)),
'properties' =>
get_object_vars($data)
);
// by changing above line to
'properties' => (array)$data
// then we could see private,
protected properties but it was a
mess (and still not php5 info)
*/
return
(ss_debug::dump_html_table($obj_data,$style,$public_only,$show_docs));
break;
case 'resource':
return sprintf('%s
(%s)',$data,get_resource_type($data));
break;
default:
//if ($data === NULL) {
//return('-NULL-');
//}
return $data;
break;
}
}
$output = '<table border="1" cellpadding="3"
cellspacing="0">';
foreach ($data as $key => $value) {
$type = substr(gettype($data[$key]),0,3);
$output .= sprintf (
"<tr>\n <td style=\"%s\">%s</td>\n
<td style=\"%s\">%s</td>\n
<td style=\"%s\">%s</td>\n</tr>\n",
$style['key'], $key,
$style['type'], $type,
$style['value'],
ss_debug::dump_html_table($value,$style,$public_only,$show_docs)
);
}
$output .= '</table>';
return($output);
}
// end of ss_debug class
}
///////////////////////////// end of script
Previous Comments:
------------------------------------------------------------------------
[2005-05-20 01:00:05] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
------------------------------------------------------------------------
[2005-05-12 19:23:28] [EMAIL PROTECTED]
Try it with plain ./configure --enable-debug
--with-apxs2=/usr/sbin/apxs2
------------------------------------------------------------------------
[2005-05-12 18:08:13] phpbug at swift-web dot com
Tried today's CVS snapshot and it still gives a seg fault error. I
think I discovered problem with the debugging. I just noticed when I
compile with --enable-debug I get warning messages in error_log saying
that my modules were not compiled with the debug flag set and they must
be.
I tried with --disable-debug so I didn't get those warnings and apache
starts cleanly (no warning messages). Still get seg fault error. I'll
compile the 13 extension modules I need to set the debug flag on for
again as well (opensll, mhash, zlib, gettext, tidy, exif, fam, ncurses,
mbstring, mcrypt, sysvmsg, sysvsem, sysvshm). I won't have time to do
this for a few days though.
I configured php with:
--prefix=/usr --host=i686-pc-linux-gnu --mandir=/usr/share/man
--infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc
--localstatedir=/var/lib --with-jpeg-dir=/usr --with-freetype-dir=/usr
--with-t1lib=/usr --with-ttf=/usr --enable-gd-jis-conf
--enable-gd-native-ttf --with-png-dir=/usr --with-tiff-dir=/usr
--without-xpm-dir --with-gd --with-mysql
--with-mysql-sock=/var/run/mysqld/mysqld.sock --with-mm
--without-msession --enable-sqlite-utf8 --with-apxs2=/usr/sbin/apxs2
--with-config-file-path=/etc/php/apache2-php5 --without-pear
--disable-bcmath --without-bz2 --disable-calendar --without-cpdflib
--disable-ctype --without-curl --without-curlwrappers --disable-dbase
--disable-dio --enable-exif=shared --with-fam=shared --without-fbsql
--without-fdftk --disable-filepro --disable-ftp --with-gettext=shared
--without-gmp --without-hwapi --without-iconv --without-informix
--without-ingres --without-interbase --without-kerberos
--enable-mbstring=shared --with-mcrypt=shared --without-mcve
--disable-memory-limit --with-mhash=shared --without-mime-magic
--without-ming --without-mnogosearch --without-msql --without-mssql
--with-ncurses=shared --without-oci8 --without-oracle
--with-openssl=shared --with-openssl-dir=/usr --without-ovrimos
--disable-pcntl --without-pfpro --without-pgsql --disable-posix
--without-pspell --without-recode --disable-simplexml --enable-shmop
--without-snmp --disable-soap --disable-sockets --without-sybase
--without-sybase-ct --enable-sysvmsg=shared --enable-sysvsem=shared
--enable-sysvshm=shared --with-tidy=shared --disable-tokenizer
--disable-wddx --without-xsl --without-xmlrpc --disable-yp
--with-zlib=shared --disable-debug --disable-dba --with-readline
--without-libedit
I have apache-2.0.54-r3 compiled with mpm-prefork and ssl flags set.
Here is a complete cut 'n paste of the script I run to display class
information along with comments on how I can make it work (*note you'll
also see a comment out where isDestructor() always returns true as
well)
---start of code---
<?php
// test for php Reflection bug (default static property value crash)
?><html>
<head>
<title>Test for php Reflection bug</title>
</head>
<body>
<center><h1>Test for php Reflection bug</h1></center>
<hr>
<?php
// phpinfo(); exit;
/*
* works when I call the below method (that overrides default static
property)
* but when commented out page exits immediately
*/
// debug::jason();
echo debug::dump(new debug(),'debug()',0,true);
// When I either comment out (or activate) line "debug::jason();",
// I change the text below to give a quick visual confirmation that
// page is not actually fully running when I reload the page
echo 'done';
echo '</body></html>';
// classes defined below
class debug {
final public static function jason($jason = true) {
static $mark = false;
if ($jason !== false) {
$mark = $jason;
} else {
return($mark);
}
}
final public static function
dump($data,$label='',$public_only=true,$show_docs=false) {
// make sure public_only & show_docs is just true or
false
$public_only = ($public_only != false) ? true : false;
$show_docs = ($show_docs != false) ? true : false;
// setup styles for html output
$style['key'] = 'font-family: sans-serif; text-align:
right;
font-size: 12px; font-weight: bold; background-color: #000; color:
#f0f0f0;';
$style['value'] = 'font-family: sans-serif; font-size:
11px; color:
#009; background-color: #eee'; // monospace
$style['type'] = 'font-family: sans-serif; text-align:
center;
font-size: 12px; background-color: #9cc; color: #600;';//#F6F6F6
$output = '<table border="2" bordercolor="#000080"
cellpadding="0"
cellspacing="0"><tr><td style="font-family: sans-serif; font-size:
14px; background-color: #000080; color: white;">'.($label != '' ?
$label : 'variable dump - no variable name passed').'</td></tr><tr><td
style="font-family: sans-serif; text-align: center; font-size: 12px;
background-color: #9cc; color:
#600;">'.gettype($data).'</td></tr><tr><td>';
return($output.debug::dump_html_table($data,$style,$public_only,$show_docs).'</td></tr></table><br
/>');
}
final private static function
dump_html_table($data,&$style,$public_only,$show_docs) {
if (!is_array($data)) {
switch (gettype($data)) {
case 'string':
return ( isset ( $data ) &&
!empty ( $data ) ) ?
'<pre>'.htmlentities($data).'</pre>' : ' ';
break; // string
case 'boolean':
return($data ? 'true' :
'false');
break; // boolean
case 'object':
// search patterns to replace
wasted front whitespace or empty
lines
$doc_search = array('/^(\t|
)*\/\*\*/','/^(\t| )*/m','/^(\t|
)*(\*\/)?(\t| )*(\n)?$/m','/^(\w|\*|\r|\n)*$/m');
// convert object to array (so
we can find private and protected
properties)
$raw_properties = (array)$data;
// Create an instance of the
ReflectionClass class to give us
more detailed info
$class = new
ReflectionClass(get_class($data));
$class_name = $class->getName();
// get method info
$methods = $properties =
array();
foreach ($class->getMethods()
as $method) {
$result = array();
$name = '<font
color="grey">';
if
($method->isPublic()) {
$name .=
'<i>public</i> ';
} elseif
($method->isPrivate()) {
if
($public_only === true) {
break;
}
$name .=
'<i>private</i> ';
} elseif
($method->isProtected()) {
if
($public_only === true) {
break;
}
$name .=
'<i>protected</i> ';
}
if
($method->isStatic()) {
$name .=
'<i>static</i> ';
}
if
($method->isAbstract()) {
$name .=
'<i>abstract</i> ';
}
if ($method->isFinal())
{
$name .=
'<i>final</i> ';
}
$name .=
'</font>'.$method->getName();
if ($show_docs ===
true) {
$result['docs']
= $method->getDocComment();
if
($result['docs'] == false) {
unset($result['docs']);
} else {
$result['docs'] =
preg_replace($doc_search,'',$result['docs']);
}
}
$result['params'] = '';
foreach($method->getParameters() as $parameter) {
$result['params'] .= $parameter->__toString().", \n";
}
if ($result['params']
== false) {
unset($result['params']);
} else {
$result['params'] = substr($result['params'],0,-3);
}
$result['info'] = '';
if
($method->isConstructor()) {
$result['info']
.= 'constructor, ';
}
/* does not appear to
work (it always returns true)
if
($method->isDestructor()) {
$result['info']
.= 'destructor, ';
}
*/
if
($method->isInternal()) {
$result['info']
.= 'internal (built-into php)';
} else {
$result['info']
.= 'user-defined (lines
'.$method->getStartLine().' - '.$method->getEndline().')';
}
$result['static vars']
= $method->getStaticVariables();
if ($result['static
vars'] == array()) {
unset($result['static vars']);
}
$methods[$name] =
$result;
}
// get property info
foreach
($class->getProperties() as $prop) {
$prop_name =
$prop->getName();
$result = array();
$name = '<font
color="grey">';
if ($prop->isDefault())
{
$name .=
'<i><default></i> ';
}
if ($prop->isPublic()) {
$name .=
'<i>public</i> ';
} elseif
($prop->isPrivate()) {
if
($public_only === true) {
break;
}
$name .=
'<i>private</i> ';
} elseif
($prop->isProtected()) {
if
($public_only === true) {
break;
}
$name .=
'<i>protected</i> ';
}
if ($prop->isStatic()) {
$name .=
'<i>static</i> ';
}
$name .=
"</font>$prop_name";
$found = false;
foreach
($raw_properties as $key => $value) {
if
(strpos($key,$prop_name,(strlen($key)-strlen($prop_name))))
{
$properties[$name] = $value;
$found
= true;
unset($raw_properties[$key]);
break;
}
}
if ($found === false) {
$properties[$name] = NULL;
}
}
// get class info
$keywords =
$class->isAbstract() ? 'abstract ' : '';
$keywords .= $class->isFinal()
? 'final ' : '';
$keywords .= $class_name;
$parent =
$class->getParentClass();
$parent = (array)$parent;
if (isset($parent['name'])) {
$keywords .= ' extends
'.$parent['name'];
}
$obj_data['class'] = $keywords;
$obj_data['declared in'] =
$class->getFileName().' (lines
'.$class->getStartLine().' - '.$class->getEndline().')';
if ($show_docs === true) {
$obj_data['docs'] =
$class->getDocComment();
if ($obj_data['docs']
== false) {
unset($obj_data['docs']);
} else {
$obj_data['docs'] =
preg_replace($doc_search,'',$obj_data['docs']);
}
}
$obj_data['interfaces'] =
($class->getInterfaces() == array() &&
count($class->getInterfaces()) > 0) ?
var_export($class->getInterfaces(),1) : 'none';
$obj_data['constants'] =
(($class->getConstants() == array() &&
count($class->getConstants()) > 0) ? $class->getConstants() : 'none');
$obj_data['static properties']
= $class->getStaticProperties();
$obj_data['properties'] =
$properties;
$obj_data['methods'] = $methods;
// unset empty fields to save
space
if ($obj_data['interfaces'] ==
'none') {
unset($obj_data['interfaces']);
}
if ($obj_data['constants'] ==
'none') {
unset($obj_data['constants']);
}
if ($obj_data['static
properties'] == array()) {
unset($obj_data['static
properties']);
}
if ($obj_data['properties'] ==
array()) {
unset($obj_data['properties']);
}
return
(debug::dump_html_table($obj_data,$style,$public_only,$show_docs));
break;
case 'resource':
return sprintf('%s
(%s)',$data,get_resource_type($data));
break;
default:
return $data;
break;
}
}
$output = '<table border="1" cellpadding="3"
cellspacing="0">';
foreach ($data as $key => $value) {
$type = substr(gettype($data[$key]),0,3);
$output .= sprintf (
'<tr>
<td style="%s">%s</td>
<td style="%s">%s</td>
<td style="%s">%s</td>
</tr>',
$style['key'], $key,
$style['type'], $type,
$style['value'],
debug::dump_html_table($value,$style,$public_only,$show_docs)
);
}
$output .= '</table>';
return($output);
}
// end of debug class
}
?>
---end of code---
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/32981
--
Edit this bug report at http://bugs.php.net/?id=32981&edit=1
