Description:
------------
Running a production batch ends in a SIGSEGV. It just loads data from MySQL and synchronize another partner (convert to JSON... and call their API).

See traces:
$ php -v
PHP 5.6.28 (cli) (built: Nov 24 2016 10:28:04) 
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
    with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies


$ uname -a
Linux digixo4 4.4.0-34-generic #53-Ubuntu SMP Wed Jul 27 16:06:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.1 LTS
Release:        16.04
Codename:       xenial

(gdb) bt 10
#0  format_converter (odp=odp@entry=0x7fffff7ff560, fmt=0xa24818 "%s%04lld", ap=ap@entry=0x7fffff7ff570) at /opt/arc/build/php-5.6.28/main/snprintf.c:588
#1  0x00000000008f3fab in strx_printv (ap=0x7fffff7ff570, format=0xa24818 "%s%04lld", len=32, buf=0x7fffff7ff6e0 "7\004\067X", ccp=<synthetic pointer>) at /opt/arc/build/php-5.6.28/main/snprintf.c:1230
#2  ap_php_slprintf (buf=buf@entry=0x7fffff7ff6e0 "7\004\067X", len=len@entry=32, format=format@entry=0xa24818 "%s%04lld") at /opt/arc/build/php-5.6.28/main/snprintf.c:1246
#3  0x000000000044585a in date_format (format=format@entry=0x7fffe3ffa898 "Y-m-d", format_len=format_len@entry=5, t=t@entry=0x1db594a0, localtime=localtime@entry=1) at /opt/arc/build/php-5.6.28/ext/date/php_date.c:1134
#4  0x000000000044dc0a in php_format_date (format=0x7fffe3ffa898 "Y-m-d", format_len=5, ts=1480000567, localtime=localtime@entry=1) at /opt/arc/build/php-5.6.28/ext/date/php_date.c:1263
#5  0x000000000044e4e8 in php_date (return_value_ptr=<optimized out>, this_ptr=<optimized out>, return_value_used=<optimized out>, localtime=1, return_value=0x2db57290, ht=1) at /opt/arc/build/php-5.6.28/ext/date/php_date.c:1239
#6  zif_date (ht=1, return_value=0x2db57290, return_value_ptr=<optimized out>, this_ptr=<optimized out>, return_value_used=<optimized out>) at /opt/arc/build/php-5.6.28/ext/date/php_date.c:1370
#7  0x0000000000a1878f in zend_do_fcall_common_helper_SPEC (execute_data=<optimized out>) at /opt/arc/build/php-5.6.28/Zend/zend_vm_execute.h:558
#8  0x00000000009a1330 in execute_ex (execute_data=0x2daf59a8) at /opt/arc/build/php-5.6.28/Zend/zend_vm_execute.h:363
#9  0x00007fffe82bfade in nr_php_execute_enabled () at /home/hudson/slave-workspace/workspace/php-release-agent/label/centos5-64-nrcamp/agent/php_execute.c:1167
(More stack frames follow...)


#0  format_converter (odp=odp@entry=0x7fffff7ff560, fmt=0xa24818 "%s%04lld", ap=ap@entry=0x7fffff7ff570) at /opt/arc/build/php-5.6.28/main/snprintf.c:588
        sp = <optimized out>
        bep = <optimized out>
        cc = <optimized out>
        i = <optimized out>
        s = <optimized out>
        s_len = <error reading variable s_len (Cannot access memory at address 0x7fffff7fecd4)>
        free_zcopy = <error reading variable free_zcopy (Cannot access memory at address 0x7fffff7fecd8)>
        zvp = <optimized out>
        zcopy = <error reading variable zcopy (Cannot access memory at address 0x7fffff7fece0)>
        min_width = <optimized out>
        precision = <optimized out>
        adjust = <optimized out>
        pad_char = <optimized out>
        prefix_char = <optimized out>
        fp_num = <optimized out>
        i_num = <optimized out>
        ui_num = <optimized out>
        num_buf = <error reading variable num_buf (Cannot access memory at address 0x7fffff7fed10)>
        char_buf = <error reading variable char_buf (Cannot access memory at address 0x7fffff7fed00)>
        lconv = <optimized out>
        modifier = <optimized out>
        alternate_form = <optimized out>
        print_sign = <optimized out>
        print_blank = <optimized out>
        adjust_precision = <optimized out>
        adjust_width = <optimized out>
        is_negative = <error reading variable is_negative (Cannot access memory at address 0x7fffff7fecdc)>
#1  0x00000000008f3fab in strx_printv (ap=0x7fffff7ff570, format=0xa24818 "%s%04lld", len=32, buf=0x7fffff7ff6e0 "7\004\067X", ccp=<synthetic pointer>) at /opt/arc/build/php-5.6.28/main/snprintf.c:1230
        od = {buf_end = 0x7fffff7ff6ff "", nextb = 0x7fffff7ff6e0 "7\004\067X"}
        cc = <optimized out>
#2  ap_php_slprintf (buf=buf@entry=0x7fffff7ff6e0 "7\004\067X", len=len@entry=32, format=format@entry=0xa24818 "%s%04lld") at /opt/arc/build/php-5.6.28/main/snprintf.c:1246
        cc = <optimized out>
        ap = <error reading variable ap (Attempt to dereference a generic pointer.)>
#3  0x000000000044585a in date_format (format=format@entry=0x7fffe3ffa898 "Y-m-d", format_len=format_len@entry=5, t=t@entry=0x1db594a0, localtime=localtime@entry=1) at /opt/arc/build/php-5.6.28/ext/date/php_date.c:1134
        string = {c = 0x0, len = 0, a = 0}
        i = 0
        length = 0
        buffer = "7\004\067X\000\000\000\000\220\245\206\001\000\000\000\000\020\177\203\001\000\000\000\000\067\004\067X\000\000\000\000`\360.\001\000\000\000\000\214\231I\363\377\177\000\000\341}\203\001\000\000\000\000\240\224\265\035\000\000\000\000\000\002\205\001\000\000\000\000\220\245\206\001\000\000\000\000\067\004\067X\000\000\000\000\240\224\265\035\000\000\000\000\067"
        offset = <optimized out>
        isoweek = 1480000567
        isoyear = 498439328
        rfc_colon = 0
        weekYearSet = 0
#4  0x000000000044dc0a in php_format_date (format=0x7fffe3ffa898 "Y-m-d", format_len=5, ts=1480000567, localtime=localtime@entry=1) at /opt/arc/build/php-5.6.28/ext/date/php_date.c:1263
        t = 0x1db594a0
        tzi = <optimized out>
        string = <optimized out>
#5  0x000000000044e4e8 in php_date (return_value_ptr=<optimized out>, this_ptr=<optimized out>, return_value_used=<optimized out>, localtime=1, return_value=0x2db57290, ht=1) at /opt/arc/build/php-5.6.28/ext/date/php_date.c:1239
        format = 0x7fffe3ffa898 "Y-m-d"
        format_len = 5
        ts = 1480000567
        string = <optimized out>
#6  zif_date (ht=1, return_value=0x2db57290, return_value_ptr=<optimized out>, this_ptr=<optimized out>, return_value_used=<optimized out>) at /opt/arc/build/php-5.6.28/ext/date/php_date.c:1370
No locals.
#7  0x0000000000a1878f in zend_do_fcall_common_helper_SPEC (execute_data=<optimized out>) at /opt/arc/build/php-5.6.28/Zend/zend_vm_execute.h:558
        ret = 0x2daf5988
        opline = <optimized out>
        should_change_scope = 0 '\000'
        fbc = 0x133a9b0
        num_args = 1
#8  0x00000000009a1330 in execute_ex (execute_data=0x2daf59a8) at /opt/arc/build/php-5.6.28/Zend/zend_vm_execute.h:363
        ret = <optimized out>
        original_in_execution = 1 '\001'
#9  0x00007fffe82bfade in nr_php_execute_enabled () at /home/hudson/slave-workspace/workspace/php-release-agent/label/centos5-64-nrcamp/agent/php_execute.c:1167