View Issue Details

IDProjectCategoryView StatusLast Update
0000085XdebugUncategorizedpublic2004-08-05 12:12
Reporteremgie Assigned To 
Status closedResolutionopen 
Summary0000085: Segmentation fault

Every time I run php with XDebug extension, it finishes with segmentation fault, having executed every script or just version request (-v) correctly.

Additional Information

PHP 5.0.0
XDebug from CVS, 2004-08-04
Fedora Core 1, glibc-2.3.2-101

TagsNo tags attached.
Operating SystemFedora Core 1
PHP Version5.0.0-dev



2004-08-04 09:30

reporter   ~0000171

Here is the gdb log:

[root@floyd bin]# gdb php
GNU gdb Red Hat Linux (5.3.90-0.20030710.41rh)
Copyright 2003 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-gnu"...Using host libthread_db library "/lib/tls/".

(gdb) run -v
Starting program: /usr/local/bin/php -v
[Thread debugging using libthread_db enabled]
[New Thread -1084790912 (LWP 16385)]
PHP 5.0.0 (cli) (built: Jul 20 2004 11:59:59)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v2.0.0, Copyright (c) 1998-2004 Zend Technologies
with Xdebug v2.0.0dev, Copyright (c) 2002, 2003, 2004, by Derick Rethans

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1084790912 (LWP 16385)]
0x007612f2 in _int_free () from /lib/tls/
(gdb) bt
#0 0x007612f2 in _int_free () from /lib/tls/
#1 0x0076028b in free () from /lib/tls/
0000002 0x001e2005 in zm_post_zend_deactivate_xdebug ()
at /home/maciek/nowe/xdebug2/xdebug/xdebug.c:566
0000003 0x08206796 in exec_done_cb (module=0x94f98)
at /home/maciek/nowe/php-5.0.0/Zend/zend.c:834
0000004 0x0820c365 in zend_hash_apply (ht=0x1f1fad,
apply_func=0x8206780 <exec_done_cb>)
at /home/maciek/nowe/php-5.0.0/Zend/zend_hash.c:664
0000005 0x082067bd in zend_post_deactivate_modules ()
at /home/maciek/nowe/php-5.0.0/Zend/zend.c:842
0000006 0x081d46be in php_request_shutdown (dummy=0x0)
at /home/maciek/nowe/php-5.0.0/main/main.c:1215
0000007 0x08232c93 in main (argc=2, argv=0xbfe8db84)
at /home/maciek/nowe/php-5.0.0/sapi/cli/php_cli.c:1046


2004-08-04 09:50

administrator   ~0000172

Valgrind output:

==27885== Invalid free() / delete / delete[]
==27885== at 0x3C01F918: free (vg_replace_malloc.c:127)
==27885== by 0x3C88B4CB: zm_post_zend_deactivate_xdebug (xdebug.c:566)
==27885== by 0x82D7033: exec_done_cb (zend.c:834)
==27885== by 0x82DF86D: zend_hash_apply (zend_hash.c:664)
==27885== Address 0x3C89E67E is not stack'd, malloc'd or free'd

(If you want a workaround, just comment out that line 566 and it should work).


2004-08-04 10:41

reporter   ~0000173

Actually, setting "xdebug.idekey" to anything makes a better solution.
(this option is not documented)

Seems that there should be more care taken of "ide_key" variable in the code.


2004-08-05 12:12

administrator   ~0000174

This is fixed in CVS now, we had a problem where we used two different styles of memory allocation functions.
The idekey setting is now also documented.

Issue History

Date Modified Username Field Change
2004-08-04 09:28 emgie New Issue
2004-08-04 09:30 emgie Note Added: 0000171
2004-08-04 09:50 derick Note Added: 0000172
2004-08-04 09:50 derick Status new => confirmed
2004-08-04 10:41 emgie Note Added: 0000173
2004-08-05 12:12 derick Status confirmed => closed
2004-08-05 12:12 derick Note Added: 0000174
2016-07-31 12:36 derick Category Usage problems => Usage problems (Crashes)
2016-07-31 12:38 derick Category Usage problems (Crashes) => Usage problems (Wrong Results)
2020-03-12 16:35 derick Category Usage problems (Wrong Results) => Variable Display
2020-03-12 16:38 derick Category Variable Display => Uncategorized