#23619 [Opn->Ver]: set_error_handler registered hdler not called for object instances

From: Date: Fri, 16 May 2003 01:10:27 +0000
Subject: #23619 [Opn->Ver]: set_error_handler registered hdler not called for object instances
References: 1  Groups: php.bugs 
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 ID:               23619
 Updated by:       sniper@php.net
 Reported By:      ldemailly at qualys dot com
-Status:           Open
+Status:           Verified
 Bug Type:         Scripting Engine problem
 Operating System: Linux 2.4.20
 PHP Version:      4CVS-2003-05-13 (stable)
 New Comment:

Okay, I'm getting the same output now as you do,
when I configured a plain PHP (with only --disable-all).

And it seems your last patch is not bogus after all. :)
Now I need to figure out why it DID work for me even
without your patch..




Previous Comments:
------------------------------------------------------------------------

[2003-05-15 19:30:06] ldemailly at qualys dot com

Did you actually TRY ? I did (again) :

[dl@dl-pc php-4.3.2RC3]$ ./configure && make && sapi/cli/php ~/foo.php
...build output...

Build complete.
(It is safe to ignore warnings about tmpnam).
 
set_error_handler done retcode=1
 
Notice: Undefined variable:  foo in /home/dl/foo.php on line 12

which is NOT WORKING
(given that the code hasn't changed and still remove
the handler when the string length is 0, it is not
surprising it does not work... did you actually even
glanced at the code and patch ??)

PLEASE actually TRY the command line above (after saving
the repro script above into foo.php)

PLEASE try to explain (to yourself and to me) what 
happens in that if (Z_STRLEN_PP(error_handler)==0) 
when error_handler is an array like in the test script...
(for bonus points: find what other bug/corruption cause
that code to actually work in some cases...)

If it works for you, you have the lucky other corruption/
bug that make it work *sometimes*; 
What OS/configuration exactly do you use if you 
do see "ERROR HANDLER CALLED (EXPECTED)" ?
I use redhat linux 9.0 (same on 7.2 actually)

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

[2003-05-15 19:02:45] waboring at qualys dot com

The patch is NOT bogus.  As I clearly explained earlier in the most
plain english I can say, that test tests for a STRING.  It is NOT a
string.  it is an ARRAY.  It will fall through 100% of the time.  This
has to be fixed.  The code is totally broken.

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

[2003-05-15 18:41:36] sniper@php.net

You should try this package:
 
 http://downloads.php.net/jani/php-4.3.2RC3.tar.gz

And DO NOT run buildconf for it!!


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

[2003-05-15 18:32:30] sniper@php.net

That patch is also bogus.
And as I said already: It works fine with latest _stable_ CVS. check
what php -v outputs, it's propably not the same version I'm trying this
with.


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

[2003-05-15 14:03:28] ldemailly at qualys dot com

sniper, what did you try exactly ?
I tried again with the latest from cvs and

./configure  --with-oci8=$ORACLE_HOME \
             --with-apache=../../apache_1.3.27 --with-mcrypt=/usr/local
\
             --enable-sysvsem --enable-sysvshm --enable-trackvars \
             --with-gd --with-png-dir=/usr \
             --with-jpeg-dir=/usr --with-zlib-dir=/usr \
             --with-mysql=/usr

and from the command line :
[dl@dl-pc php4]$ sapi/cli/php ~/foo.php
set_error_handler done retcode=1
 
Notice: Undefined variable:  foo in /home/dl/foo.php on line 12

This is another patch, as that unset thing seems
to leave stuff corrupt and looks like dead code
anyway (is_callable would theoritically fail for
an empty string anyway)

*** zend_builtin_functions.c.~1.124.2.4.~	2002-12-31 08:22:58.000000000
-0800
--- zend_builtin_functions.c	2003-05-15 12:01:48.000000000 -0700
***************
*** 891,902 ****
  	}
  	ALLOC_ZVAL(EG(user_error_handler));
  
- 	if (Z_STRLEN_PP(error_handler)==0) { /* unset user-defined handler
*/
- 		FREE_ZVAL(EG(user_error_handler));
- 		EG(user_error_handler) = NULL;
- 		RETURN_TRUE;
- 	}
- 
  	*EG(user_error_handler) = **error_handler;
  	zval_copy_ctor(EG(user_error_handler));
  
--- 891,896 ----

with the patch :
[dl@dl-pc php4]$ sapi/cli/php ~/foo.php
set_error_handler done retcode=
ERROR HANDLER CALLED (EXPECTED)

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

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/23619

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Edit this bug report at http://bugs.php.net/?id=23619&edit=1



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