Zeev Suraski wrote:
> Do you use dl() anywhere? Is the crash reproducible?
Hi Zeev,
I'm glad you are interested in. I don't use dl(). This crash is
reproducible, but I could not make it reproduce with simpler script, yet.
Anyway, there is other code that crashes PHP which I can report details.
I have Form classes handle HTML form. In the classes, there is a
following method
// Form_Email class
function _validate($val) {
error_log("called _validate()\n",3,'/tmp/php_elog');
if (!$this->required && !$val) {
return '';
}
if (!eregi($this->valid_regex, $val, $regs)) {
return "ERROR"; //$this->valid_e;
}
error_log("regex check done\n",3,'/tmp/php_elog');
$host = $regs[1];
$err = '';
switch ($this->check_lev) {
case "hard":
case "normal":
if (!checkdnsrr($host,'MX')) {
$err = "No MX entry in DNS";
}
break;
}
error_log("return _validate()\n",3,'/tmp/php_elog');
return $err;
}
There is other class called From which has "HAS A" relationship to
Form_Email class. From object has colletion of form element objects as
array. In the Form class, appropriate elements are selected and
_validate method is called as variable function(method). (i.e.
$object->$method())
Once this method is called, PHP calls this method over and over until
PHP reaches memory limit. I don't get SIGSEGV for this one.
Interesting behavior is, this problem cannot be reproduced with much
simpler Form class test script. It happens when I use these Form classes
within an Application class. (Form object is defined as global) However,
if I comment out checkdnsrr() call, it works as expetecd.
NOTE: I experienced similar behavior when I encountered foreach() bug.
PHP stopped looping when I comment out or move some statements, even if
real problem was in foreach() code.
I'll try to find the cause this afternoon. However, I think I won't find
what's wrong... I needed to spend MANY hours to find out foreach() had a
bug...
Please let me know, if you have anything you need or you want me to do.
Any suggestions are welcome.
Thanks Jani, I tied without dmalloc. It seems dmalloc does not relate to
this problem.
--
Yasuo Ohgaki
>
> At 10:05 04-09-01, Yasuo Ohgaki wrote:
>
>> FYI
>>
>> PHP 4.0.8-dev (updated about 30 min ago) has the same problem.
>>
>> BTW, I don't enable output compression in PHP. No custom output
>> handler. I enabled mbstr-enc-trans, but there should be no acutual
>> translation, since I'm using EUC-JP for both internal/output encoding.
>>
>> Yasuo Ohgaki
>>
>> Yasuo Ohgaki wrote:
>>
>>> I got SIGSEGV.
>>> GNU gdb 5.0rh-5 Red Hat Linux 7.1
>>> Copyright 2001 Free Software Foundation, Inc.
>>> GDB is free software, covered by the GNU General Public License, and
>>> you are
>>> welcome to change it and/or distribute copies of it under certain
>>> conditions.
>>> Type "show copying" to see the conditions.
>>> There is absolutely no warranty for GDB. Type "show warranty" for
>>> details.
>>> This GDB was configured as "i386-redhat-linux"...
>>> (gdb) run -X
>>> Starting program: /usr/sbin/httpd -X
>>> [Tue Sep 4 14:10:25 2001] [warn] Loaded DSO lib/apache/mod_gzip.so
>>> uses plain Apache 1.3 API, this module might crash under EAPI!
>>> (please recompile it with -DEAPI)
>>> Program received signal SIGSEGV, Segmentation fault.
>>> 0x40106fb6 in chunk_free (ar_ptr=0x401aff00, p=0x819f1f8) at
>>> malloc.c:3142
>>> 3142 malloc.c: No such file or directory.
>>> in malloc.c
>>> (gdb) bt
>>> #0 0x40106fb6 in chunk_free (ar_ptr=0x401aff00, p=0x819f1f8) at
>>> malloc.c:3142
>>> #1 0x40106d59 in __libc_free (mem=0x819f200) at malloc.c:3054
>>> #2 0x40597a05 in free_zend_constant (c=0x81bc1a8) at
>>> zend_constants.c:34
>>> #3 0x405b2a59 in zend_hash_del_key_or_index (ht=0x80bfca8,
>>> arKey=0x81bc190 "include_path",
>>> nKeyLength=13, h=3932814155, flag=0) at zend_hash.c:512
>>> #4 0x405b3340 in zend_hash_reverse_apply (ht=0x80bfca8,
>>> apply_func=0x40597acc <clean_non_persistent_constant>) at
>>> zend_hash.c:741
>>> #5 0x40597e86 in clean_non_persistent_constants () at
>>> zend_constants.c:163
>>> #6 0x405a1da8 in shutdown_executor () at zend_execute_API.c:194
>>> #7 0x405ac92f in zend_deactivate () at zend.c:594
>>> #8 0x405bde23 in php_request_shutdown (dummy=0x0) at main.c:736
>>> #9 0x405ba12e in apache_php_module_main (r=0x81993f8,
>>> display_source_mode=0)
>>> at sapi_apache.c:96
>>> #10 0x405baf24 in send_php (r=0x81993f8, display_source_mode=0,
>>> filename=0x819b160
>>> "/home/httpd/dev/ygb/support/feedback/question/index.shtml")
>>> at mod_php4.c:575
>>> #11 0x405baf9e in send_parsed_php (r=0x81993f8) at mod_php4.c:590
>>> #12 0x08055927 in ap_invoke_handler () at eval.c:41
>>> #13 0x08069bdb in process_request_internal () at eval.c:41
>>> #14 0x08069c3c in ap_process_request () at eval.c:41
>>> #15 0x08061011 in child_main () at eval.c:41
>>> #16 0x080611e0 in make_child () at eval.c:41
>>> #17 0x08061354 in startup_children () at eval.c:41
>>> #18 0x080619a3 in standalone_main () at eval.c:41
>>> #19 0x080621db in main () at eval.c:41
>>> #20 0x400a3177 in __libc_start_main (main=0x8061e28 <main>, argc=2,
>>> ubp_av=0xbffffa3c,
>>> init=0x804fa20 <_init>, fini=0x8099f6c <_fini>,
>>> rtld_fini=0x4000e184 <_dl_fini>,
>>> stack_end=0xbffffa34) at ../sysdeps/generic/libc-start.c:129
>>> (gdb)
>>> ./configure \
>>> --enable-debug \
>>> --with-dmalloc \
>>> --with-apxs \
>>> --disable-short-tags \
>>> --without-mysql \
>>> --enable-bcmath \
>>> --enable-ftp \
>>> --enable-shmop \
>>> --enable-sysvsem \
>>> --enable-sysvshm \
>>> --enable-sockets \
>>> --enable-mbstring \
>>> --enable-mbstr-enc-trans \
>>> --enable-memory-limit \
>>> --enable-wddx \
>>> --with-bz2 \
>>> --with-curl \
>>> --with-ftp \
>>> --with-iconv \
>>> --with-mhash \
>>> --with-mcrypt \
>>> --with-openssl \
>>> --with-pgsql \
>>> --with-regex=system \
>>> --with-zlib \
>>> --with-gd=../gd-2.0.1 \
>>> --enable-gd-native-ttf \
>>> --with-freetype-dir=/usr/local \
>>> --with-jpeg-dir=/usr \
>>> --with-png-dir=/usr \
>>> --with-xpm-dir=/usr/X11R6 \
>>
>>
>>
>>
>> _________________________________________________________
>> Do You Yahoo!?
>> Get your free @yahoo.com address at http://mail.yahoo.com
>>
>>
>> --
>> PHP Development Mailing List <http://www.php.net/>
>> To unsubscribe, e-mail: [EMAIL PROTECTED]
>> For additional commands, e-mail: [EMAIL PROTECTED]
>> To contact the list administrators, e-mail: [EMAIL PROTECTED]
>
>
> --
> Zeev Suraski <[EMAIL PROTECTED]>
> CTO & co-founder, Zend Technologies Ltd. http://www.zend.com/
>
_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com
--
PHP Development Mailing List <http://www.php.net/>
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]
