From 19897d528de779d4d3804fd7d10c235e8b50a53e Mon Sep 17 00:00:00 2001
From: Philip Hazel <ph10@hermes.cam.ac.uk>
Date: Wed, 29 Aug 2007 14:02:22 +0000
Subject: [PATCH] POSIX allows open() to be a macro; guard against it.

---
 doc/doc-txt/ChangeLog | 4 +++-
 src/src/dbstuff.h     | 6 +++---
 src/src/search.c      | 4 ++--
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index 6a3999827..087c67205 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.528 2007/08/29 13:58:57 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.529 2007/08/29 14:02:22 ph10 Exp $
 
 Change log file for Exim from version 4.21
 -------------------------------------------
@@ -99,6 +99,8 @@ PH/21 Added message_body_newlines option.
 
 PH/22 Guard against possible overflow in moan_check_errorcopy().
 
+PH/23 POSIX allows open() to be a macro; guard against that.
+
 
 Exim version 4.67
 -----------------
diff --git a/src/src/dbstuff.h b/src/src/dbstuff.h
index 3298d7838..2cbd8ca63 100644
--- a/src/src/dbstuff.h
+++ b/src/src/dbstuff.h
@@ -1,4 +1,4 @@
-/* $Cambridge: exim/src/src/dbstuff.h,v 1.6 2007/01/08 10:50:17 ph10 Exp $ */
+/* $Cambridge: exim/src/src/dbstuff.h,v 1.7 2007/08/29 14:02:22 ph10 Exp $ */
 
 /*************************************************
 *     Exim - an Internet mail transport agent    *
@@ -135,7 +135,7 @@ API changed for DB 4.1. */
 #define EXIM_DBOPEN(name, flags, mode, dbpp) \
        if (db_create(dbpp, NULL, 0) != 0 || \
          ((*dbpp)->set_errcall(*dbpp, dbfn_bdb_error_callback), \
-         (*dbpp)->open(*dbpp, NULL, CS name, NULL, \
+         ((*dbpp)->open)(*dbpp, NULL, CS name, NULL, \
          ((flags) == O_RDONLY)? DB_UNKNOWN : DB_HASH, \
          ((flags) == O_RDONLY)? DB_RDONLY : DB_CREATE, \
          mode)) != 0) *(dbpp) = NULL
@@ -143,7 +143,7 @@ API changed for DB 4.1. */
 #define EXIM_DBOPEN(name, flags, mode, dbpp) \
        if (db_create(dbpp, NULL, 0) != 0 || \
          ((*dbpp)->set_errcall(*dbpp, dbfn_bdb_error_callback), \
-         (*dbpp)->open(*dbpp, CS name, NULL, \
+         ((*dbpp)->open)(*dbpp, CS name, NULL, \
          ((flags) == O_RDONLY)? DB_UNKNOWN : DB_HASH, \
          ((flags) == O_RDONLY)? DB_RDONLY : DB_CREATE, \
          mode)) != 0) *(dbpp) = NULL
diff --git a/src/src/search.c b/src/src/search.c
index c8a1cb995..86363a210 100644
--- a/src/src/search.c
+++ b/src/src/search.c
@@ -1,4 +1,4 @@
-/* $Cambridge: exim/src/src/search.c,v 1.5 2007/01/08 10:50:18 ph10 Exp $ */
+/* $Cambridge: exim/src/src/search.c,v 1.6 2007/08/29 14:02:22 ph10 Exp $ */
 
 /*************************************************
 *     Exim - an Internet mail transport agent    *
@@ -397,7 +397,7 @@ if (lk->type == lookup_absfile && open_filecount >= lookup_open_max)
 /* If opening is successful, call the file-checking function if there is one,
 and if all is still well, enter the open database into the tree. */
 
-handle = lk->open(filename, &search_error_message);
+handle = (lk->open)(filename, &search_error_message);
 if (handle == NULL)
   {
   store_pool = old_pool;
-- 
2.25.1