From 21e343da35779c622a71fd798d740c4af1d1d915 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <andrew@dunslane.net>
Date: Mon, 29 May 2006 13:51:23 +0000
Subject: Make plperl's $_TD trigger data a global rather than a lexical
 variable, with a fresh local value for each invocation, to avoid unexpected
 sharing violations. Per recent -hackers discussion.

---
 doc/src/sgml/plperl.sgml | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'doc/src')

diff --git a/doc/src/sgml/plperl.sgml b/doc/src/sgml/plperl.sgml
index 02260d59a7c..94a375587fc 100644
--- a/doc/src/sgml/plperl.sgml
+++ b/doc/src/sgml/plperl.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/plperl.sgml,v 2.53 2006/05/26 17:34:16 adunstan Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/plperl.sgml,v 2.54 2006/05/29 13:51:23 adunstan Exp $ -->
 
  <chapter id="plperl">
   <title>PL/Perl - Perl Procedural Language</title>
@@ -660,8 +660,9 @@ $$ LANGUAGE plperl;
   <para>
    PL/Perl can be used to write trigger functions.  In a trigger function,
    the hash reference <varname>$_TD</varname> contains information about the
-   current trigger event.  The fields of the <varname>$_TD</varname> hash
-   reference are:
+   current trigger event. <varname>$_TD</> is a global variable, 
+   which gets a separate local value for each invocation of the trigger. 
+   The fields of the <varname>$_TD</varname> hash reference are:
 
    <variablelist>
     <varlistentry>
-- 
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