PHP :: Bug #18821 :: CLI crashes with 'echo "";' as with every other command as well

Bug #18821	CLI crashes with 'echo "";' as with every other command as well
Submitted:	2002-08-08 21:30 UTC	Modified:	2002-08-09 08:44 UTC
From:	eru@php.net	Assigned:
Status:	Not a bug	Package:	Reproducible crash
PHP Version:	4CVS-2002-08-09	OS:	RedHat 7.3 w/ 2.4.18-5smp
Private report:	No	CVE-ID:	None

View Developer Edit

[2002-08-08 21:30 UTC] eru@php.net

Dunno why it does, tested on a WinXP too with CVS from yesterday, works like a charm.

(gdb) run -r 'echo E_ALL & ~E_NOTICE;'
Starting program: /usr/local/bin/php -r 'echo E_ALL & ~E_NOTICE;'

Program received signal SIGSEGV, Segmentation fault.
0x081cf90f in zend_llist_destroy (l=0x8267260) at /usr/local/src/cvs/php4/Zend/zend_llist.c:110
110                     next = current->next;
(gdb) bt
#0  0x081cf90f in zend_llist_destroy (l=0x8267260) at /usr/local/src/cvs/php4/Zend/zend_llist.c:110
#1  0x081c613e in shutdown_compiler () at /usr/local/src/cvs/php4/Zend/zend_compile.c:118
#2  0x081d8265 in zend_deactivate () at /usr/local/src/cvs/php4/Zend/zend.c:599
#3  0x081a39d3 in php_request_shutdown (dummy=0x0) at /usr/local/src/cvs/php4/main/main.c:865
#4  0x081f1e48 in main (argc=3, argv=0xbffff924) at /usr/local/src/cvs/php4/sapi/cli/php_cli.c:723
#5  0x42017589 in __libc_start_main () from /lib/i686/libc.so.6

Additional info available at http://zyanka.li/phpinfo.html

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports

[2002-08-09 02:36 UTC] edink@php.net

Hm, cannot reproduce this with a simple configure line. Could you try to recompile with just ./configure --enable-dedug and see if it still crashes?

If it doesn't could you try locating which extension causes the trouble?

[2002-08-09 06:33 UTC] eru@php.net

./configure --enable-debug

(gdb) run -r 'echo "";'
Starting program: /usr/local/src/cvs/php4/sapi/cli/php -r 'echo "";'

Program received signal SIGSEGV, Segmentation fault.
0x0816313f in zend_llist_destroy (l=0x81f5020) at /usr/local/src/cvs/php4/Zend/zend_llist.c:110
110                     next = current->next;

same backtrace as last time...

I tested various commands like php -r 'phpinfo();' and even php -r '' segfaults...

[2002-08-09 07:26 UTC] sander@php.net

I've got the same problem on my local box. The problem disappears when configuring without debug.

The problem is, that for some reason current points to 0x1 when current == l->tail, while it should point to 0x0.

[2002-08-09 08:44 UTC] eru@php.net

The error is in Dericks xdebug-extension, which I load dynamically in my php.ini

	php.net \| support \| documentation \| report a bug \| advanced search \| search howto \| statistics \| random bug \| login
go to bug id or search bugs for


Copyright © 2001-2025 The PHP Group All rights reserved.	Last updated: Tue Jul 01 07:01:33 2025 UTC