From: Thiago Macieira <thiago@kde.org>
Date: Sat, 25 Jul 2009 11:21:01 +0000 (+0200)
Subject: Fix the configure-check again: must use b.
X-Git-Tag: dbus-1.3.0~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3c99e692c92d7eb91b06aedbd8add8fabff57a44;p=thirdparty%2Fdbus.git

Fix the configure-check again: must use b.

Otherwise, when compiling with optimisation, the compiler will detect
that b was unused, then use the instructions that i386 supports.
---

diff --git a/configure.in b/configure.in
index f40558673..d79d65599 100644
--- a/configure.in
+++ b/configure.in
@@ -355,7 +355,7 @@ fi
 AC_CACHE_CHECK([whether $CC knows __sync_sub_and_fetch()],
   dbus_cv_sync_sub_and_fetch,
   [AC_LINK_IFELSE(
-     AC_LANG_PROGRAM([], [[int a = 4; int b = __sync_sub_and_fetch(&a, 4);]]),
+     AC_LANG_PROGRAM([], [[int a = 4; int b = __sync_sub_and_fetch(&a, 4); exit(b); ]]),
      [dbus_cv_sync_sub_and_fetch=yes],
      [dbus_cv_sync_sub_and_fetch=no])
   ])