Jacek Caban : winnt.h: Added GCC variant of DEFAULT_UNREACHABLE macro.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 15448724be0cd8eec6bb137f85c5f226d915a1a6
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=15448724be0cd8eec6bb137f85c5f226d915a1a6

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Wed Mar 13 10:43:46 2013 +0100

winnt.h: Added GCC variant of DEFAULT_UNREACHABLE macro.

---

 include/winnt.h |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/include/winnt.h b/include/winnt.h
index 0dac8b1..b701de3 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -376,8 +376,10 @@ extern "C" {
 /* Eliminate Microsoft C/C++ compiler warning 4715 */
 #if defined(_MSC_VER) && (_MSC_VER > 1200)
 # define DEFAULT_UNREACHABLE default: __assume(0)
+#elif defined(__clang__) || (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5))))
+# define DEFAULT_UNREACHABLE default: __builtin_unreachable()
 #else
-# define DEFAULT_UNREACHABLE
+# define DEFAULT_UNREACHABLE default:
 #endif
 
 /* Error Masks */