[patch testsuite g++.dg]: Reflect ABI change for windows native targets about bitfield layout in structures

[Kai Tietz]

Hi,

In gcc 4.7 the default for IA mingw targets about ms-bitfields was
changed. So patch
adjusts testcase to make sure we disable it for mingw targets

ChangeLog

2011-12-15  Kai Tietz  <kti...@redhat.com>

        * g++.dg/abi/bitfield3.C: Make sure test runs
        for windows targets without activated ms-bitfields option,

Ok for apply?
Kai

Index: g++.dg/abi/bitfield3.C
===================================================================
--- g++.dg/abi/bitfield3.C      (revision 182092)
+++ g++.dg/abi/bitfield3.C      (working copy)
@@ -3,7 +3,7 @@
 // { dg-options "-O2" }
 // Cygwin and mingw32 default to MASK_ALIGN_DOUBLE. Override to ensure
 // 4-byte alignment.
-// { dg-options "-mno-align-double" { target i?86-*-cygwin* i?86-*-mingw* } }
+// { dg-options "-mno-align-double -mno-ms-bitfields" { target
i?86-*-cygwin* i?86-*-mingw* } }

 struct A
 {