From eba0c039a556478f50aa1e4839684027746197f7 Mon Sep 17 00:00:00 2001
From: Philip Hazel <ph10@hermes.cam.ac.uk>
Date: Tue, 15 Nov 2005 09:44:33 +0000
Subject: [PATCH] Discard the values of the numeric variables after a
 wildlsearch lookup.

---
 doc/doc-txt/ChangeLog     |  6 +++++-
 src/src/lookups/lsearch.c | 13 +++++++++++--
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index 3693efbc1..050fa034b 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.260 2005/11/14 16:09:54 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.261 2005/11/15 09:44:33 ph10 Exp $
 
 Change log file for Exim from version 4.21
 -------------------------------------------
@@ -122,6 +122,10 @@ PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
 
 PH/12 Added log selector acl_warn_skipped (default on).
 
+PH/13 After a successful wildlsearch lookup, discard the values of numeric
+      variables because (a) they are in the wrong storage pool and (b) even if
+      they were copied, it wouldn't work properly because of the caching.
+
 
 Exim version 4.54
 -----------------
diff --git a/src/src/lookups/lsearch.c b/src/src/lookups/lsearch.c
index c5e75dfdd..1acfd7494 100644
--- a/src/src/lookups/lsearch.c
+++ b/src/src/lookups/lsearch.c
@@ -1,4 +1,4 @@
-/* $Cambridge: exim/src/src/lookups/lsearch.c,v 1.4 2005/06/27 14:29:44 ph10 Exp $ */
+/* $Cambridge: exim/src/src/lookups/lsearch.c,v 1.5 2005/11/15 09:44:33 ph10 Exp $ */
 
 /*************************************************
 *     Exim - an Internet mail transport agent    *
@@ -197,7 +197,16 @@ for (last_was_eol = TRUE;
       if (rc == FAIL) continue;
       if (rc == DEFER) return DEFER;
       }
-    break;      /* Key matched */
+
+    /* The key has matched. If the search involved a regular expression, it
+    might have caused numerical variables to be set. However, their values will
+    be in the wrong storage pool for external use. Copying them to the standard
+    pool is not feasible because of the caching of lookup results - a repeated
+    lookup will not match the regular expression again. Therefore, we flatten
+    all numeric variables at this point. */
+
+    expand_nmax = -1;
+    break;
 
     /* Compare an ip address against a list of network/ip addresses. We have to
     allow for the "*" case specially. */
-- 
2.30.2