Merge branch 'PHP-7.4'

* PHP-7.4:
  Fixed bug #79115

Author: nikic

ext/reflection/php_reflection.c

@@ -4604,6 +4604,8 @@ ZEND_METHOD(reflection_class, isCloneable)
 			if (UNEXPECTED(object_init_ex(&obj, ce) != SUCCESS)) {
 				return;
 			}
+			/* We're not calling the constructor, so don't call the destructor either. */
+			zend_object_store_ctor_failed(Z_OBJ(obj));
 			RETVAL_BOOL(Z_OBJ_HANDLER(obj, clone_obj) != NULL);
 			zval_ptr_dtor(&obj);
 		}

ext/reflection/tests/bug79115.phpt

@@ -0,0 +1,16 @@
+--TEST--
+Bug #79115: ReflectionClass::isCloneable call reflected class __destruct
+--FILE--
+<?php
+
+class A {
+    function __construct() { echo __FUNCTION__ . "\n"; }
+    function __destruct() { echo __FUNCTION__ . "\n"; }
+}
+
+$c = new ReflectionClass('A');
+var_dump($c->isCloneable());
+
+?>
+--EXPECT--
+bool(true)