From 7c4fa81fb9142c2ae5d0a75cef69218a91d13e58 Mon Sep 17 00:00:00 2001
From: Aki Tuomi <aki.tuomi@dovecot.fi>
Date: Sun, 25 Feb 2018 09:35:43 +0200
Subject: [PATCH] m4: Use -U and -D in cc_fortify

Not just -D. This is to test the same thing
that gets used.
---
 m4/cc_fortify.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/m4/cc_fortify.m4 b/m4/cc_fortify.m4
index aefa9c521b..3b01ec97cd 100644
--- a/m4/cc_fortify.m4
+++ b/m4/cc_fortify.m4
@@ -7,7 +7,7 @@ AC_DEFUN([AC_CC_D_FORTIFY_SOURCE],[
     if test $enable_hardening = yes; then
       case "$host" in
         *)
-          gl_COMPILER_OPTION_IF([-O2 -D_FORTIFY_SOURCE=2], [
+          gl_COMPILER_OPTION_IF([-O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2], [
             CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
             ],
             [],
-- 
2.47.3