<code>zval *z; MAKE_STD_ZVAL(z); ZVAL_STRING(z, "this is a test", 0); zval_ptr_dtor(&z); //这里会报错 Program received signal SIGSEGV, Segmentation fault. 0x000000000067a01d in zval_delref_p (pz=0x7ffff063f323) at /vagrant_data/php-5.6.25/Zend/zend.h:411 411 return --pz->refcount__gc; </code>