Edit report at https://bugs.php.net/bug.php?id=60536&edit=1

 ID:                 60536
 Patch added by:     g...@php.net
 Reported by:        scott...@php.net
 Summary:            Traits Segfault
 Status:             Open
 Type:               Bug
 Package:            Scripting Engine problem
 Operating System:   ubuntu 11.11
 PHP Version:        5.4SVN-2011-12-15 (SVN)
 Block user comment: N
 Private report:     N

 New Comment:

The following patch has been added/updated:

Patch Name: property006.phpt
Revision:   1324052364
URL:        
https://bugs.php.net/patch-display.php?bug=60536&patch=property006.phpt&revision=1324052364


Previous Comments:
------------------------------------------------------------------------
[2011-12-16 16:19:08] g...@php.net

The following patch has been added/updated:

Patch Name: property005.phpt
Revision:   1324052348
URL:        
https://bugs.php.net/patch-display.php?bug=60536&patch=property005.phpt&revision=1324052348

------------------------------------------------------------------------
[2011-12-16 16:17:37] g...@php.net

Hi Laruence:

Your patch was also what I had thought of for the first moment, however, that 
is 
not actually fixing the bug.
The problem is another one. For some reason the property value does not get set 
properly. At least that is my current understanding.
This leads to either some inconsistent ref count, or an inappropriately shared 
zval. Haven't figured that out yet.

What you patch does is just changing the semantics of when properties are 
composed into the class.

That is also something that happens to be broken (inconsistent with normal 
inheritance).
I have updated tests that should describe the correct semantics for property 
handling.

If you see where I do something stupid with the zvals, please let me know.

Thanks
Stefan

------------------------------------------------------------------------
[2011-12-16 15:57:01] larue...@php.net

The following patch has been added/updated:

Patch Name: bug60536.phpt
Revision:   1324051021
URL:        
https://bugs.php.net/patch-display.php?bug=60536&patch=bug60536.phpt&revision=1324051021

------------------------------------------------------------------------
[2011-12-16 15:54:15] larue...@php.net

The following patch has been added/updated:

Patch Name: bug60536.patch
Revision:   1324050855
URL:        
https://bugs.php.net/patch-display.php?bug=60536&patch=bug60536.patch&revision=1324050855

------------------------------------------------------------------------
[2011-12-15 20:38:27] scott...@php.net

backtrace:

#0  0x0000000100289c71 in zend_mm_check_ptr (heap=0x101000000, ptr=0x100c4f730, 
silent=1, __zend_filename=0x1005476a8 "/Users/macvicar/dev/php-
src/branches/PHP_5_4/Zend/zend_vm_execute.h", __zend_lineno=10833, 
__zend_orig_filename=0x1005437a0 "/Users/macvicar/dev/php-
src/branches/PHP_5_4/Zend/zend_execute.h", __zend_orig_lineno=88) at 
zend_alloc.c:1380
#1  0x000000010028c1ad in _zend_mm_free_int (heap=0x101000000, p=0x100c4f730, 
__zend_filename=0x1005476a8 "/Users/macvicar/dev/php-
src/branches/PHP_5_4/Zend/zend_vm_execute.h", __zend_lineno=10833, 
__zend_orig_filename=0x1005437a0 "/Users/macvicar/dev/php-
src/branches/PHP_5_4/Zend/zend_execute.h", __zend_orig_lineno=88) at 
zend_alloc.c:2064
#2  0x000000010028de9d in _efree (ptr=0x100c4f730, __zend_filename=0x1005476a8 
"/Users/macvicar/dev/php-src/branches/PHP_5_4/Zend/zend_vm_execute.h", 
__zend_lineno=10833, __zend_orig_filename=0x1005437a0 "/Users/macvicar/dev/php-
src/branches/PHP_5_4/Zend/zend_execute.h", __zend_orig_lineno=88) at 
zend_alloc.c:2436
#3  0x00000001003742c8 in i_zval_ptr_dtor [inlined] () at 
/Users/macvicar/dev/php-src/branches/PHP_5_4/Zend/zend_execute.h:88
#4  0x00000001003742c8 in ZEND_RETURN_SPEC_VAR_HANDLER 
(execute_data=0x1009802f8) 
at zend_execute.h:10833
#5  0x000000010032a882 in execute (op_array=0x1009bad50) at 
zend_vm_execute.h:410
#6  0x00000001002d733b in zend_execute_scripts (type=8, retval=0x0, 
file_count=3) 
at zend.c:1272
#7  0x0000000100219973 in php_execute_script (primary_file=0x7fff5fbff170) at 
main.c:2476

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


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