From 1dbbdce0be78c12e3f29b622da3e69137290048c Mon Sep 17 00:00:00 2001
From: Victor Julien <victor@inliniac.net>
Date: Sun, 27 Jun 2010 13:00:39 +0200
Subject: [PATCH] Add a -fno-tree-pre to our CFLAGS as it breaks the
 ringbuffers on Ubuntu 9.10/64 bit.

---
 configure.in | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure.in b/configure.in
index 30ba444de6..f5b47786a3 100644
--- a/configure.in
+++ b/configure.in
@@ -50,7 +50,9 @@ AC_INIT(configure.in)
             CFLAGS="$CFLAGS -W"
     fi
 
-    CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
+    # remove optimization options that break our code
+    # VJ 2010/06/27: no-tree-pre added. It breaks ringbuffers code.
+    CFLAGS="$CFLAGS -Wall -fno-strict-aliasing -fno-tree-pre"
     CFLAGS="$CFLAGS -Wno-unused-parameter"
     CFLAGS="$CFLAGS -std=gnu99"