Edit report at https://bugs.php.net/bug.php?id=63066&edit=1
ID: 63066
Patch added by: larue...@php.net
Reported by: Jared dot Williams1 at ntlworld dot com
Summary: Calling an undefined method in a generator results
in a seg fault
Status: Assigned
Type: Bug
Package: Class/Object related
Operating System: Linux ubuntu 3.5.0-14-generic #1
PHP Version: master-Git-2012-09-11 (Git)
Assigned To: nikic
Block user comment: N
Private report: N
New Comment:
The following patch has been added/updated:
Patch Name: bug63066.patch
Revision: 1347377278
URL:
https://bugs.php.net/patch-display.php?bug=63066&patch=bug63066.patch&revision=1347377278
Previous Comments:
------------------------------------------------------------------------
[2012-09-11 15:12:54] larue...@php.net
nikic, while method is not exists, then the EX(object)'s refcount will not be
increased..
then this object will be dtor in genertor_close, and then the arguments of
previous exeucte_data clean up..
nikic, please look at this. thanks
------------------------------------------------------------------------
[2012-09-11 13:50:49] Jared dot Williams1 at ntlworld dot com
Backtrace of the NON debug seg fault...
jared@ubuntu:~$ gdb ./Development/php-src/sapi/cli/php
GNU gdb (GDB) 7.5-ubuntu
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/jared/Development/php-src/sapi/cli/php...done.
(gdb) run fatalSegFault.php
Starting program: /home/jared/Development/php-src/sapi/cli/php fatalSegFault.php
foo
PHP Fatal error: Call to undefined method stdClass::fatalError() in
/home/jared/fatalSegFault.php on line 6
Fatal error: Call to undefined method stdClass::fatalError() in
/home/jared/fatalSegFault.php on line 6
Program received signal SIGSEGV, Segmentation fault.
0x00000000006f36b2 in gc_zval_possible_root (zv=0x7ffff7fcafd8)
at /home/jared/Development/php-src/Zend/zend_gc.c:143
143 GC_ZOBJ_CHECK_POSSIBLE_ROOT(zv);
(gdb) bt
#0 0x00000000006f36b2 in gc_zval_possible_root (zv=0x7ffff7fcafd8)
at /home/jared/Development/php-src/Zend/zend_gc.c:143
#1 0x00000000006f6246 in zend_generator_close
(generator=generator@entry=0x7ffff7fce180,
finished_execution=finished_execution@entry=0 '\000')
at /home/jared/Development/php-src/Zend/zend_generators.c:148
#2 0x00000000006f63cb in zend_generator_free_storage (generator=0x7ffff7fce180)
at /home/jared/Development/php-src/Zend/zend_generators.c:181
#3 0x00000000006fc0a8 in zend_objects_store_free_object_storage (
objects=0xdbae60 <executor_globals+960>)
at /home/jared/Development/php-src/Zend/zend_objects_API.c:92
#4 0x00000000006c7153 in shutdown_executor ()
at /home/jared/Development/php-src/Zend/zend_execute_API.c:298
#5 0x00000000006d5646 in zend_deactivate () at
/home/jared/Development/php-src/Zend/zend.c:938
#6 0x000000000067641d in php_request_shutdown (dummy=dummy@entry=0x0)
at /home/jared/Development/php-src/main/main.c:1780
#7 0x0000000000781fe0 in do_cli (argc=2, argv=0x7fffffffe118)
at /home/jared/Development/php-src/sapi/cli/php_cli.c:1171
#8 0x000000000042d56b in main (argc=2, argv=0x7fffffffe118)
at /home/jared/Development/php-src/sapi/cli/php_cli.c:1364
------------------------------------------------------------------------
[2012-09-11 13:46:20] Jared dot Williams1 at ntlworld dot com
It appears that the seg fault doesn't appear in debug builds.
Recompiled without debug again, and the seg fault is still present
jared@ubuntu:~$ php -v
PHP 5.5.0-dev (cli) (built: Sep 11 2012 14:25:38) (DEBUG)
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.5.0-dev, Copyright (c) 1998-2012 Zend Technologies
jared@ubuntu:~$ php fatalSegFault.php
foo
PHP Fatal error: Call to undefined method stdClass::fatalError() in
/home/jared/fatalSegFault.php on line 6
Fatal error: Call to undefined method stdClass::fatalError() in
/home/jared/fatalSegFault.php on line 6
----
jared@ubuntu:~$ ./Development/php-src/sapi/cli/php -v
PHP 5.5.0-dev (cli) (built: Sep 11 2012 14:41:40)
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.5.0-dev, Copyright (c) 1998-2012 Zend Technologies
jared@ubuntu:~$ ./Development/php-src/sapi/cli/php fatalSegFault.php
foo
PHP Fatal error: Call to undefined method stdClass::fatalError() in
/home/jared/fatalSegFault.php on line 6
Fatal error: Call to undefined method stdClass::fatalError() in
/home/jared/fatalSegFault.php on line 6
Segmentation fault
------------------------------------------------------------------------
[2012-09-11 13:17:14] jared dot williams1 at ntlworld dot com
No APC or XDebug.
Will recompile with debug and get a bt.
------------------------------------------------------------------------
[2012-09-11 13:13:41] reeze dot xia at gmail dot com
Can't reproduce in Ubuntu too.
parallels@ubuntu:~/php-src$ uname -a
Linux ubuntu 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011
x86_64
x86_64 x86_64 GNU/Linux
if your are testing the lastest version, Could please provide backtraceï¼
https://bugs.php.net/bugs-generating-backtrace.php
------------------------------------------------------------------------
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