Fix bug #72884 isCloneable() on SplFileObject should return false

Author: jhdxr

NEWS

@@ -25,6 +25,10 @@ PHP                                                                        NEWS
   . Fixed bug #78510 (Partially uninitialized buffer returned by
     sodium_crypto_generichash_init()). (Frank Denis, cmb)
 
+- SPL:
+  . Fixed bug #72884 (SplObject isCloneable() returns true but errs on clone).
+    (Chu Zhaowei)
+
 29 Aug 2019, PHP 7.2.22
 
 - Core:

ext/spl/spl_directory.c

@@ -379,8 +379,7 @@ static zend_object *spl_filesystem_object_clone(zval *zobject)
 			intern->u.dir.index = index;
 			break;
 		case SPL_FS_FILE:
-			zend_throw_error(NULL, "An object of class %s cannot be cloned", ZSTR_VAL(old_object->ce->name));
-			return new_object;
+			ZEND_ASSERT(0);
 	}
 
 	intern->file_class = source->file_class;
@@ -3168,6 +3167,7 @@ PHP_MINIT_FUNCTION(spl_directory)
 	REGISTER_SPL_IMPLEMENTS(RecursiveDirectoryIterator, RecursiveIterator);
 
 	memcpy(&spl_filesystem_object_check_handlers, &spl_filesystem_object_handlers, sizeof(zend_object_handlers));
+	spl_filesystem_object_check_handlers.clone_obj = NULL;
 	spl_filesystem_object_check_handlers.get_method = spl_filesystem_object_get_method_check;
 
 #ifdef HAVE_GLOB

ext/spl/tests/bug72884.phpt

@@ -0,0 +1,10 @@
+--TEST--
+Bug #72884:  isCloneable() on SplFileObject should return false
+--FILE--
+<?php
+$x=new SplFileObject(__FILE__);
+$r=new ReflectionObject($x);
+var_dump($r->isCloneable());
+
+--EXPECT--
+bool(false)

ext/spl/tests/bug72888.phpt

@@ -12,7 +12,7 @@ try {
 var_dump($y);
 ?>
 --EXPECTF--
-string(49) "An object of class SplFileObject cannot be cloned"
+string(60) "Trying to clone an uncloneable object of class SplFileObject"
 
 Notice: Undefined variable: y in %sbug72888.php on line %d
 NULL