From 70aebc8dffbb87a3c3aa0ff01254a1d3c541b2ec Mon Sep 17 00:00:00 2001
From: Simon Wisselink <s.wisselink@iwink.nl>
Date: Thu, 20 Feb 2020 23:38:53 +0100
Subject: [PATCH] Throw SmartyException when setting caching attributes for
 cacheable plugin as compiling this would fail. Fixes #457

---
 change_log.txt                                            | 1 +
 libs/sysplugins/smarty_internal_method_registerplugin.php | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/change_log.txt b/change_log.txt
index 10a0169c..ffc49d1f 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,4 +1,5 @@
  - fix foreachelse on arrayiterators https://github.com/smarty-php/smarty/issues/506
+ - throw SmartyException when setting caching attributes for cacheable plugin https://github.com/smarty-php/smarty/issues/457
 
 ===== 3.1.34 release ===== 05.11.2019
 13.01.2020
diff --git a/libs/sysplugins/smarty_internal_method_registerplugin.php b/libs/sysplugins/smarty_internal_method_registerplugin.php
index f987f6da..ed18d84b 100644
--- a/libs/sysplugins/smarty_internal_method_registerplugin.php
+++ b/libs/sysplugins/smarty_internal_method_registerplugin.php
@@ -48,6 +48,8 @@ class Smarty_Internal_Method_RegisterPlugin
             throw new SmartyException("Plugin tag '{$name}' already registered");
         } elseif (!is_callable($callback)) {
             throw new SmartyException("Plugin '{$name}' not callable");
+        } elseif ($cacheable && $cache_attr) {
+            throw new SmartyException("Cannot set caching attributes for plugin '{$name}' when it is cacheable.");
         } else {
             $smarty->registered_plugins[ $type ][ $name ] = array($callback, (bool)$cacheable, (array)$cache_attr);
         }