ID: 11990
User updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Old Status: 
Status: Feedback
Bug Type: Scripting Engine problem
Operating System: RedHat Linux 6.2
PHP Version: 4.0.5
New Comment:

Well, I haven't succeeded yet in reproducing the corrupted define, but I have managed 
to repeatably kill PHP with a 200002 line script generated by the following shell 
script:

        echo "<?php" 

        define="this is a very long define, indeed! asdf asdf asdf asdf asdf asdf asdf 
asdf asdf asdf asdf asdf asdf asdf asdf asdf"

        count=0 
        while [ $count -lt 100000 ]; do 
            echo "define(\"DEF_${count}\", \"$define\");" 
            echo "if(DEF_${count} != \"$define\") { print(\"bad\"); }" 
        
            count=$(($count + 1)) 
        done 
        echo "?>" 

I redirected that to a file and ran php through gdb.  here's the resulting stack 
trace: 

(gdb) run 
Starting program: /home/blalor/redhat/BUILD/php-4.0.6/php_standalone ../test.php 

Program received signal SIGSEGV, Segmentation fault. 
0x812770b in execute (op_array=0x81dc6c4) at ./zend_execute.c:1639 
(gdb) bt 
#0  0x812770b in execute (op_array=0x81dc6c4) at ./zend_execute.c:1639 
#1  0x80ee58b in zend_execute_scripts (type=8, file_count=3) at zend.c:752 
#2  0x80635a1 in php_execute_script (primary_file=0xbffff554) at main.c:1206 
#3  0x80615c9 in main (argc=2, argv=0xbffff5b4) at cgi_main.c:718 
[snip] 
(gdb) print valptr->value 
$1 = {lval = 136194132, dval = 1.067726779661273e-313, str = { 
    val = 0x81e2854 "DEF_0", len = 5}, ht = 0x81e2854, obj = {ce = 0x81e2854, 
    properties = 0x5}} 

Note that it appears that PHP is trying to access the data for DEF_0 at 
zend_execute.c:1639. 

Note that I did this with php 4.0.6, not 4.0.5.  *Some* kind of problem still exists 
there... 

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

[2001-07-10 17:43:05] [EMAIL PROTECTED]

Configure options:

./configure --prefix=/usr --with-config-file-path=/etc --with-apxs=/usr/sbin/apxs 
--with-exec-dir=/usr/bin --disable-magic-quotes --enable-track-vars --enable-wddx 
--without-mysql --with-oci8=/home/oracle/product/8.0.5 
--with-esoob=/usr/local/easysoft/oob/client --enable-sockets --disable-pear --with-xml 
--enable-inline-optimization

Having difficulty reproducing bug; it is very intermittent...

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

[2001-07-09 19:51:36] [EMAIL PROTECTED]

Would it be possible to test this same script with PHP 4.0.6? I don't remember anyone 
reporting anything like this before and I have never experienced anything like this 
myself.

Also, if you could create a short bug complete script
which could be used to reproduce this, it would
be a lot easier to debug this issue.

And what was your configure line used to configure PHP ?

--Jani


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

[2001-07-09 18:13:11] [EMAIL PROTECTED]

We're seeing severe data corruption problems with defines.

For example, the following snippet is from a PHP script that uses defined constants to 
build up a filename.  The resulting variable contains junk data.

no exist :ieldp/c­├<─classsupport/getproductlist.php
Warning: Failed opening 'ield' for inclusion (include_path='.:/u/php:/u/htdocs') in 
/u/php/corelib/sp/procedure.php on line 57
no exist :ieldp/c­├<─classsupport/getfullproduct.php
Warning: Failed opening 'ield' for inclusion (include_path='.:/u/php:/u/htdocs') in 
/u/php/corelib/sp/procedure.php on line 57

PHP doesn't seem to crash.

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



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