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Make zval_ptr_dtor / _zval_dtor_func more robust

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In particular, allow arrays with refcount>1, like we already allow
for all other types. _zval_dtor_func is now the same as
_zval_dtor_func_for_ptr with an extra refcount decrement check at
the start. At this point we might as well drop it...

Cherry-pick of ded69ee6e6 from
PHP-7.1.
This commit is contained in:
Nikita Popov 2016-04-22 17:48:35 +02:00
parent 48cf8dd9c3
commit 896814e139
1 changed files with 10 additions and 11 deletions
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21
Zend/zend_variables.c
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@ -30,17 +30,20 @@
ZEND_API void ZEND_FASTCALL _zval_dtor_func(zend_refcounted *p ZEND_FILE_LINE_DC)
{
if (--GC_REFCOUNT(p)) {
return;
}
switch (GC_TYPE(p)) {
case IS_STRING:
case IS_CONSTANT: {
zend_string *str = (zend_string*)p;
CHECK_ZVAL_STRING_REL(str);
zend_string_release(str);
zend_string_free(str);
break;
}
case IS_ARRAY: {
zend_array *arr = (zend_array*)p;
ZEND_ASSERT(GC_REFCOUNT(arr) <= 1);
zend_array_destroy(arr);
break;
}
@ -54,25 +57,21 @@ ZEND_API void ZEND_FASTCALL _zval_dtor_func(zend_refcounted *p ZEND_FILE_LINE_DC
case IS_OBJECT: {
zend_object *obj = (zend_object*)p;
OBJ_RELEASE(obj);
zend_objects_store_del(obj);
break;
}
case IS_RESOURCE: {
zend_resource *res = (zend_resource*)p;
if (--GC_REFCOUNT(res) == 0) {
/* destroy resource */
zend_list_free(res);
}
/* destroy resource */
zend_list_free(res);
break;
}
case IS_REFERENCE: {
zend_reference *ref = (zend_reference*)p;
if (--GC_REFCOUNT(ref) == 0) {
i_zval_ptr_dtor(&ref->val ZEND_FILE_LINE_RELAY_CC);
efree_size(ref, sizeof(zend_reference));
}
i_zval_ptr_dtor(&ref->val ZEND_FILE_LINE_RELAY_CC);
efree_size(ref, sizeof(zend_reference));
break;
}
default: