In case it would be useful for anything, here is one of backtraces I got:
Program received signal SIGSEGV, Segmentation fault.
zval_mark_grey (pz=0x39c7cb8) at /tmp/buildd/php5-5.4.4/Zend/zend_gc.c:425
425 /tmp/buildd/php5-5.4.4/Zend/zend_gc.c: No such file or directory.
(gdb) bt
#0 zval_mark_grey (pz=0x39c7cb8) at /tmp/buildd/php5-5.4.4/Zend/zend_gc.c:425
#1 0x00000000006bcbdc in zval_mark_grey (pz=0x39c7cb8) at
/tmp/buildd/php5-5.4.4/Zend/zend_gc.c:432
#2 0x00000000006bda55 in gc_collect_cycles () at
/tmp/buildd/php5-5.4.4/Zend/zend_gc.c:501
#3 0x00000000006bdde4 in gc_zval_possible_root (zv=0x39c7cb8) at
/tmp/buildd/php5-5.4.4/Zend/zend_gc.c:166
#4 0x00000000006ac968 in zend_hash_destroy (ht=0x3b5b060) at
/tmp/buildd/php5-5.4.4/Zend/zend_hash.c:560
#5 0x000000000069dba7 in _zval_dtor_func (zvalue=0x52f5580) at
/tmp/buildd/php5-5.4.4/Zend/zend_variables.c:43
#6 0x0000000000476c78 in php_pcre_match_impl (pce=0x0, subject=0x3410dc0
"p\fA\003", subject_len=85865096, return_value=0x2, subpats=0x52f5580,
global=1, use_flags=4682104, flags=0, start_offset=0) at
/tmp/buildd/php5-5.4.4/Zend/zend_variables.h:35
#7 0x0000000000477178 in php_do_pcre_match.isra.8 (ht=3,
return_value=0x50af178, global=1) at
/tmp/buildd/php5-5.4.4/ext/pcre/php_pcre.c:520
#8 0x00007ffff4373edc in xdebug_execute_internal
(current_execute_data=0x7ffff7e51748, return_value_used=1)
at /srv/debian_developer/xdebug/xdebug-2.2.1/build-php5/xdebug.c:1483
#9 0x0000000000746a3e in zend_do_fcall_common_helper_SPEC
(execute_data=0x7ffff7e51748) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:644
#10 0x0000000000700447 in execute (op_array=0x11a58d8) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:410
#11 0x00007ffff4373a81 in xdebug_execute (op_array=0x11a58d8) at
/srv/debian_developer/xdebug/xdebug-2.2.1/build-php5/xdebug.c:1391
#12 0x0000000000746d59 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7ffff7e51350) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:669
#13 0x0000000000700447 in execute (op_array=0x2c4ac08) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:410
#14 0x00007ffff4373a81 in xdebug_execute (op_array=0x2c4ac08) at
/srv/debian_developer/xdebug/xdebug-2.2.1/build-php5/xdebug.c:1391
#15 0x0000000000746d59 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7ffff7e50c18) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:669
#16 0x0000000000700447 in execute (op_array=0x2c4ad08) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:410
#17 0x00007ffff4373a81 in xdebug_execute (op_array=0x2c4ad08) at
/srv/debian_developer/xdebug/xdebug-2.2.1/build-php5/xdebug.c:1391
#18 0x0000000000746d59 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7ffff7e4fa10) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:669
#19 0x0000000000700447 in execute (op_array=0x2c4b208) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:410
#20 0x00007ffff4373a81 in xdebug_execute (op_array=0x2c4b208) at
/srv/debian_developer/xdebug/xdebug-2.2.1/build-php5/xdebug.c:1391
#21 0x0000000000691a70 in zend_call_function (fci=0x7fffffff95d0,
fci_cache=0x0) at /tmp/buildd/php5-5.4.4/Zend/zend_execute_API.c:958
#22 0x00000000005c76ff in zif_call_user_func_array (ht=60587192,
return_value=0x53c7250, return_value_ptr=0x3a8f960, this_ptr=0xdb8648,
return_value_used=86988160) at
/tmp/buildd/php5-5.4.4/ext/standard/basic_functions.c:4751
#23 0x00007ffff4373edc in xdebug_execute_internal
(current_execute_data=0x7ffff7e4f6a0, return_value_used=1)
at /srv/debian_developer/xdebug/xdebug-2.2.1/build-php5/xdebug.c:1483
#24 0x0000000000746a3e in zend_do_fcall_common_helper_SPEC
(execute_data=0x7ffff7e4f6a0) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:644
#25 0x0000000000700447 in execute (op_array=0x33ebf88) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:410
#26 0x00007ffff4373a81 in xdebug_execute (op_array=0x33ebf88) at
/srv/debian_developer/xdebug/xdebug-2.2.1/build-php5/xdebug.c:1391
#27 0x0000000000746d59 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7ffff7e4e210) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:669
#28 0x0000000000700447 in execute (op_array=0x33855b0) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:410
#29 0x00007ffff4373a81 in xdebug_execute (op_array=0x33855b0) at
/srv/debian_developer/xdebug/xdebug-2.2.1/build-php5/xdebug.c:1391
#30 0x0000000000746d59 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7ffff7e4d180) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:669
#31 0x0000000000700447 in execute (op_array=0x2c4b108) at
/tmp/buildd/php5-5.4.4/Zend/zend_vm_execute.h:410
--
Michal Čihař | http://cihar.com | http://blog.cihar.com
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