Reset property table for disabled classes

To avoid retaining behavior about property visibility or types.

Author: nikic

Zend/tests/bug77494.phpt

@@ -3,14 +3,21 @@ Bug #77494 (Disabling class causes segfault on member access)
 --SKIPIF--
 <?php if (!extension_loaded("curl")) exit("skip curl extension not loaded"); ?>
 --INI--
-disable_classes=CURLFile
+disable_classes=CURLFile,ErrorException
 --FILE--
 <?php
 $a = new CURLFile();
 var_dump($a->name);
+$b = new ErrorException();
+var_dump($b->message);
 ?>
 --EXPECTF--
 Warning: CURLFile() has been disabled for security reasons in %sbug77494.php on line 2
 
 Warning: Undefined property: CURLFile::$name in %s on line %d
 NULL
+
+Warning: ErrorException() has been disabled for security reasons in %s on line %d
+
+Warning: Undefined property: ErrorException::$message in %s on line %d
+NULL

Zend/zend_API.c

@@ -3240,6 +3240,9 @@ ZEND_API zend_result zend_disable_class(const char *class_name, size_t class_nam
 		return FAILURE;
 	}
 
+	/* Will be reset by INIT_CLASS_ENTRY. */
+	free(disabled_class->interfaces);
+
 	INIT_CLASS_ENTRY_INIT_METHODS((*disabled_class), disabled_class_new);
 	disabled_class->create_object = display_disabled_class;
 
@@ -3250,6 +3253,7 @@ ZEND_API zend_result zend_disable_class(const char *class_name, size_t class_nam
 		}
 	} ZEND_HASH_FOREACH_END();
 	zend_hash_clean(&disabled_class->function_table);
+	zend_hash_clean(&disabled_class->properties_info);
 	return SUCCESS;
 }
 /* }}} */