php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #66575 phpdbg segfaults with Xdebug v2.2.3
Submitted: 2014-01-25 10:22 UTC Modified: 2014-02-02 14:18 UTC
From: clicky at erebot dot net Assigned: krakjoe (profile)
Status: Closed Package: phpdbg
PHP Version: 5.6.0alpha1 OS: Debian 7 (Wheezy)
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: clicky at erebot dot net
New email:
PHP Version: OS:

 

 [2014-01-25 10:22 UTC] clicky at erebot dot net 
Description:
------------
Trying to run phpdbg with Xdebug v2.2.3 loaded results in a segfault during startup. See backtrace below.
Disabling Xdebug in php.ini or running phpdbg with option -n as a workaround works correctly.


Test script:
---------------
$ php -m
[PHP Modules]
bcmath
bz2
calendar
Core
ctype
date
dom
ereg
filter
gettext
gmp
hash
iconv
intl
json
libxml
mbstring
mcrypt
mysql
mysqli
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
pdo_pgsql
pdo_sqlite
pgsql
Phar
posix
Reflection
session
SimpleXML
soap
sockets
SPL
sqlite3
standard
sysvmsg
sysvsem
sysvshm
tokenizer
xdebug
xhprof
xml
xmlreader
xmlwriter
xsl
zip
zlib

[Zend Modules]
Xdebug

$ phpdbg
Segmentation fault


Expected result:
----------------
phpdbg should start normally.

Actual result:
--------------
(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x0000000000771065 in zend_is_auto_global_quick (name=0x7ffff5616977 "_SESSION", name_len=8, hash=249877436177080008)
    at /home/clicky/Documents/git/phpfarm/src/php-5.6.0alpha1-debug/Zend/zend_compile.c:6800
#2  0x00000000007710b2 in zend_is_auto_global (name=0x7ffff5616977 "_SESSION", name_len=8)
    at /home/clicky/Documents/git/phpfarm/src/php-5.6.0alpha1-debug/Zend/zend_compile.c:6810
#3  0x00007ffff55eeb37 in zm_activate_xdebug (type=1, module_number=49)
    at /home/clicky/Documents/git/phpfarm/inst/php-5.6.0alpha1-debug/pear/temp/xdebug/xdebug.c:865
#4  0x0000000000797233 in zend_activate_modules () at /home/clicky/Documents/git/phpfarm/src/php-5.6.0alpha1-debug/Zend/zend_API.c:2403
#5  0x000000000083d559 in main (argc=1, argv=0x7fffffffe1a8)
    at /home/clicky/Documents/git/phpfarm/src/php-5.6.0alpha1-debug/sapi/phpdbg/phpdbg.c:1190

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2014-01-27 07:43 UTC] krakjoe@php.net 
I'm not able to build xdebug to test:

 cc -I. -I/tmp/pear/temp/xdebug -DPHP_ATOM_INC -I/tmp/pear/temp/pear-build-joeBiAsI7/xdebug-2.2.3/include -I/tmp/pear/temp/pear-build-joeBiAsI7/xdebug-2.2.3/main -I/tmp/pear/temp/xdebug -I/opt/php-zts/include/php -I/opt/php-zts/include/php/main -I/opt/php-zts/include/php/TSRM -I/opt/php-zts/include/php/Zend -I/opt/php-zts/include/php/ext -I/opt/php-zts/include/php/ext/date/lib -DHAVE_CONFIG_H -g -O0 -c /tmp/pear/temp/xdebug/xdebug.c  -fPIC -DPIC -o .libs/xdebug.o
/tmp/pear/temp/xdebug/xdebug.c: In function ‘xdebug_zend_startup’:
/tmp/pear/temp/xdebug/xdebug.c:2087:2: error: too few arguments to function ‘zend_startup_module’
 [2014-01-29 08:34 UTC] tyrael@php.net
-Assigned To: +Assigned To: krakjoe
 [2014-02-02 14:16 UTC] krakjoe@php.net
-Status: Assigned +Status: Closed
 [2014-02-02 14:16 UTC] krakjoe@php.net 
The fix for this bug has been committed.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.

 For Windows:

http://windows.php.net/snapshots/
 
Thank you for the report, and for helping us make PHP better.
 [2014-02-02 14:18 UTC] krakjoe@php.net 
This is fixed and will be included in the next alpha release, or grab a snapshot.

From a quick test, xdebug enables output buffering, I had to E ob_end_flush(); to see output. But you should get no errors, and can probably change the behaviour of xdebug with configuration, not really sure ...
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Sat Oct 25 21:00:01 2025 UTC