[BUG] Phalcon\Config crashes on recursive arrays

[ghost]

Test case:

<?php
$a = array();
$a['a'] = &$a;
$c = new \Phalcon\Config($a);

Program terminated with signal 11, Segmentation fault.
#0  0x00000000009e3bca in zend_mm_high_bit (_size=<error reading variable: Cannot access memory at address 0x7fffaad2eff8>) at /tmp/php-build/source/5.5.4/Zend/zend_alloc.c:666
666     /tmp/php-build/source/5.5.4/Zend/zend_alloc.c: Немає такого файла або каталогу.
(gdb) bt
#0  0x00000000009e3bca in zend_mm_high_bit (_size=<error reading variable: Cannot access memory at address 0x7fffaad2eff8>) at /tmp/php-build/source/5.5.4/Zend/zend_alloc.c:666
#1  0x00000000009e66bd in zend_mm_search_large_block (heap=0x2769170, true_size=136) at /tmp/php-build/source/5.5.4/Zend/zend_alloc.c:1810
#2  0x00000000009e6bf9 in _zend_mm_alloc_int (heap=0x2769170, size=40, __zend_filename=0x7fab95aec808 "/home/vladimir/workspace/cphalcon/ext/config.c", __zend_lineno=328, 
    __zend_orig_filename=0xf9d6b8 "/tmp/php-build/source/5.5.4/Zend/zend_alloc.c", __zend_orig_lineno=2583) at /tmp/php-build/source/5.5.4/Zend/zend_alloc.c:1938
#3  0x00000000009e89bf in _emalloc (size=40, __zend_filename=0x7fab95aec808 "/home/vladimir/workspace/cphalcon/ext/config.c", __zend_lineno=328, __zend_orig_filename=0xf9d6b8 "/tmp/php-build/source/5.5.4/Zend/zend_alloc.c", 
    __zend_orig_lineno=2583) at /tmp/php-build/source/5.5.4/Zend/zend_alloc.c:2429
#4  0x00000000009e8cea in _safe_emalloc (nmemb=1, size=40, offset=0, __zend_filename=0x7fab95aec808 "/home/vladimir/workspace/cphalcon/ext/config.c", __zend_lineno=328, __zend_orig_filename=0x0, __zend_orig_lineno=0)
    at /tmp/php-build/source/5.5.4/Zend/zend_alloc.c:2583
#5  0x00000000009e8e35 in _ecalloc (nmemb=1, size=40, __zend_filename=0x7fab95aec808 "/home/vladimir/workspace/cphalcon/ext/config.c", __zend_lineno=328, __zend_orig_filename=0x0, __zend_orig_lineno=0)
    at /tmp/php-build/source/5.5.4/Zend/zend_alloc.c:2610
#6  0x00007fab95607930 in phalcon_config_object_ctor (ce=0x2a7d850, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:328
#7  0x0000000000a347d9 in _object_and_properties_init (arg=0x7fab8d37e9d0, class_type=0x2a7d850, properties=0x0, __zend_filename=0x7fab95aec808 "/home/vladimir/workspace/cphalcon/ext/config.c", __zend_lineno=155, tsrm_ls=0x2766a70)
    at /tmp/php-build/source/5.5.4/Zend/zend_API.c:1200
#8  0x0000000000a34834 in _object_init_ex (arg=0x7fab8d37e9d0, class_type=0x2a7d850, __zend_filename=0x7fab95aec808 "/home/vladimir/workspace/cphalcon/ext/config.c", __zend_lineno=155, tsrm_ls=0x2766a70)
    at /tmp/php-build/source/5.5.4/Zend/zend_API.c:1208
#9  0x00007fab95607352 in phalcon_config_write_internal (object=0x7fab8d37e8a0, offset=0x7fffaad2f3d0, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:155
#10 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37e820, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#11 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37e6f0, offset=0x7fffaad2f480, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#12 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37e670, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#13 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37e540, offset=0x7fffaad2f530, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#14 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37e4c0, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#15 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37e390, offset=0x7fffaad2f5e0, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#16 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37e310, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#17 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37e1e0, offset=0x7fffaad2f690, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#18 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37e160, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#19 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37e030, offset=0x7fffaad2f740, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#20 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37dfb0, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#21 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37de80, offset=0x7fffaad2f7f0, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#22 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37de00, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#23 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37dcd0, offset=0x7fffaad2f8a0, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#24 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37dc50, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#25 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37db20, offset=0x7fffaad2f950, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#26 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37daa0, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#27 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37d970, offset=0x7fffaad2fa00, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#28 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37d8f0, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#29 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37d7c0, offset=0x7fffaad2fab0, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#30 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37d740, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#31 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37d610, offset=0x7fffaad2fb60, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#32 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37d590, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#33 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37d460, offset=0x7fffaad2fc10, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#34 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37d3e0, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#35 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37d2b0, offset=0x7fffaad2fcc0, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#36 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37d230, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#37 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37d100, offset=0x7fffaad2fd70, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#38 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37d080, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#39 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37cf50, offset=0x7fffaad2fe20, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#40 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37ced0, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#41 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37cda0, offset=0x7fffaad2fed0, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#42 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37cd20, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#43 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37cbf0, offset=0x7fffaad2ff80, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#44 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37cb70, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#45 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37ca40, offset=0x7fffaad30030, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#46 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37c9c0, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#47 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37c890, offset=0x7fffaad300e0, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#48 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37c810, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#49 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37c6e0, offset=0x7fffaad30190, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#50 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37c660, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413
#51 0x00007fab95607369 in phalcon_config_write_internal (object=0x7fab8d37c530, offset=0x7fffaad30240, value=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:156
#52 0x00007fab95607edc in phalcon_config_construct_internal (this_ptr=0x7fab8d37c4b0, array_config=0x7faba45a6f68, tsrm_ls=0x2766a70) at /home/vladimir/workspace/cphalcon/ext/config.c:413

The crash happens due to stack overflow.