From b2f62764c6257c166d6b5f84b0cd39a3aefcca16 Mon Sep 17 00:00:00 2001
From: unknown <msvensson@pilot.mysql.com>
Date: Fri, 22 Dec 2006 12:27:26 +0100
Subject: [PATCH] Potential use of NULL pointer in 'plugin_for_each_with_mask',
 check pointer before referencing it.

sql/sql_plugin.cc:
  Make sure the plugin being refernced in the plugins array has not been set to NULL already.
---
 sql/sql_plugin.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sql/sql_plugin.cc b/sql/sql_plugin.cc
index 9ff88b2054a..0b203002dec 100644
--- a/sql/sql_plugin.cc
+++ b/sql/sql_plugin.cc
@@ -985,7 +985,7 @@ my_bool plugin_foreach_with_mask(THD *thd, plugin_foreach_func *func,
     {
       rw_rdlock(&THR_LOCK_plugin);
       for (uint i=idx; i < total; i++)
-        if (plugins[i]->state & state_mask)
+        if (plugins[i] && plugins[i]->state & state_mask)
           plugins[i]=0;
       rw_unlock(&THR_LOCK_plugin);
     }