Description:
------------
It coredump sometimes but not Sure how to repeat it.

PHP 7.0.9 (cli) (built: Aug 15 2016 18:29:19) ( NTS DEBUG )

Core was generated by `php-fpm: pool www                                                             '.
Program terminated with signal 11, Segmentation fault.
#0  0x000000302af67f2d in malloc_consolidate () from /home/map/php/bin/../../lib/gcc-3.4.5/libc.so.6
(gdb) bt
#0  0x000000302af67f2d in malloc_consolidate () from /home/map/php/bin/../../lib/gcc-3.4.5/libc.so.6
#1  0x000000302af6861a in _int_free () from /home/map/php/bin/../../lib/gcc-3.4.5/libc.so.6
#2  0x000000302af68bd6 in free () from /home/map/php/bin/../../lib/gcc-3.4.5/libc.so.6
#3  0x0000000000a4f23a in free_ini_entry (zv=0x1b9b330) at Zend/zend_ini.c:98
#4  0x0000000000a42ef9 in zend_hash_destroy (ht=0x17b7e90) at Zend/zend_hash.c:1284
#5  0x0000000000a4f2f9 in zend_ini_dtor (ini_directives=0x17b7e90) at Zend/zend_ini.c:126
#6  0x0000000000a4f2dd in zend_ini_shutdown () at Zend/zend_ini.c:119
#7  0x00000000009ac783 in php_module_shutdown () at main/main.c:2373
#8  0x0000000000aefb57 in main (argc=7, argv=0x7fff46814bf8)
    at /home/build/php-7.0.9/sapi/fpm/fpm/fpm_main.c:2021
(gdb) source /home/map/.gdbinit 
(gdb) f 4
#4  0x0000000000a42ef9 in zend_hash_destroy (ht=0x17b7e90) at Zend/zend_hash.c:1284
1284    Zend/zend_hash.c: No such file or directory.
        in Zend/zend_hash.c
(gdb) print_ht ht
Hash(31)[0x17b7e90]: {
  [104] gd.jpeg_ignore_warning => [0x1b9b330] (refcount=25842496) pointer: 0x18a52e0
  [151] pdo_mysql.default_socket => [0x1b9b910] (refcount=26256336) pointer: 0x190a370
  [163] phar.readonly => [0x1b9ba90] (refcount=26430880) pointer: 0x1934d40
  [164] phar.require_hash => [0x1b9bab0] (refcount=26431072) pointer: 0x1934e00
  [165] phar.cache_list => [0x1b9bad0] (refcount=26431280) pointer: 0x1934ed0
  [218] php_fcrypt_hexstr_maxlen => [0x1b9c170] (refcount=28220432) pointer: 0x1ae9bb0