[akhaldi] 58662: [PSDK] * Import DEFAULT_UNREACHABLE from Wine.

Author: akhaldi
Date: Wed Apr  3 21:16:57 2013
New Revision: 58662

URL: http://svn.reactos.org/svn/reactos?rev=58662&view=rev
Log:
[PSDK]
* Import DEFAULT_UNREACHABLE from Wine.

Modified:
    trunk/reactos/include/psdk/winnt.h

Modified: trunk/reactos/include/psdk/winnt.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/include/psdk/winnt.h?rev=5…
==============================================================================
--- trunk/reactos/include/psdk/winnt.h [iso-8859-1] (original)
+++ trunk/reactos/include/psdk/winnt.h [iso-8859-1] Wed Apr  3 21:16:57 2013
@@ -415,6 +415,15 @@
 typedef DWORD FLONG;
 
 #define C_ASSERT(expr) extern char (*c_assert(void)) [(expr) ? 1 : -1]
+
+/* 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 default:
+#endif
 
 #include "intrin.h"