(svn r17465) -Codechange: use builtin static_assert() for assert_compile() if available

src/stdafx.h

@@ -301,12 +301,16 @@ typedef unsigned char byte;
 	#define PERSONAL_DIR ""
 #endif
 
-/* Compile time assertions, disabled for OS/2 or GCC < 3.4 (GCC < 3 isn't supported anymore) */
-#if defined(__OS2__) || (defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ < 4)
+/* Compile time assertions. Prefer c++0x static_assert() */
+#if defined(__STDCXX_VERSION__) || defined(__GXX_EXPERIMENTAL_CXX0X__) || defined(__GXX_EXPERIMENTAL_CPP0X__) || defined(static_assert)
+	/* __STDCXX_VERSION__ is c++0x feature macro, __GXX_EXPERIMENTAL_CXX0X__ is used by gcc, __GXX_EXPERIMENTAL_CPP0X__ by icc */
+	#define assert_compile(expr) static_assert(expr, #expr )
+#elif defined(__OS2__) || (defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ < 4)
+	/* Disabled for OS/2 or GCC < 3.4 (GCC < 3 isn't supported anymore) */
 	#define assert_compile(expr)
 #else
 	#define assert_compile(expr) extern const int __ct_assert__[1 - 2 * !(expr)] UNUSED
-#endif /* __OS2__ */
+#endif
 
 /* Check if the types have the bitsizes like we are using them */
 assert_compile(sizeof(uint64) == 8);