Comment 4 for bug 1451184

The same in here, PHP just crashes.
PHP 5.6.15 (cli) (built: Oct 31 2015 14:39:02)

Bt:

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libmemcached.11.dylib 0x000000010968328d memcached_purge(memcached_instance_st*) + 61
1 libmemcached.11.dylib 0x0000000109681c8d io_flush(memcached_instance_st*, bool, memcached_return_t&) + 45
2 libmemcached.11.dylib 0x0000000109681720 _io_write(memcached_instance_st*, void const*, unsigned long, bool, unsigned long&) + 165
3 libmemcached.11.dylib 0x0000000109681769 memcached_io_write(memcached_instance_st*, void const*, unsigned long, bool) + 20
4 libmemcached.11.dylib 0x000000010967f667 __mget_by_key_real(memcached_st*, char const*, unsigned long, char const* const*, unsigned long const*, unsigned long, bool) + 1247
5 libmemcached.11.dylib 0x000000010967fd40 memcached_mget_by_key + 20
6 memcached.so 0x000000010965b8d9 php_memc_get_impl + 637
7 php 0x000000010894b458 dtrace_execute_internal + 126
8 php 0x00000001089c436e zend_do_fcall_common_helper_SPEC + 1450
9 php 0x0000000108981b12 execute_ex + 78