[OMPT-svn-commit] OpenMPT r20218 - trunk/OpenMPT/src/mpt/base

[<sv...@op...>]

Author: manx
Date: Sun Mar  3 16:34:39 2024
New Revision: 20218
URL: https://source.openmpt.org/browse/openmpt/?op=revision&rev=20218

Log:
[Ref] mpt/base/utility.hpp: Add mpt::unreachable() for C++23 std::unreachable().

Modified:
   trunk/OpenMPT/src/mpt/base/utility.hpp

Modified: trunk/OpenMPT/src/mpt/base/utility.hpp
==============================================================================
--- trunk/OpenMPT/src/mpt/base/utility.hpp	Sun Mar  3 16:32:41 2024	(r20217)
+++ trunk/OpenMPT/src/mpt/base/utility.hpp	Sun Mar  3 16:34:39 2024	(r20218)
@@ -53,14 +53,14 @@
 
 using std::to_underlying;
 
-#else
+#else // !C++23
 
 template <typename T>
 constexpr std::underlying_type_t<T> to_underlying(T value) noexcept {
 	return static_cast<typename std::underlying_type<T>::type>(value);
 }
 
-#endif
+#endif // C++23
 
 
 
@@ -193,6 +193,26 @@
 
 
 
+#if MPT_CXX_AT_LEAST(23)
+
+using std::unreachable;
+
+#else // !C++23
+
+[[noreturn]] inline void unreachable() {
+#if MPT_COMPILER_MSVC
+	__assume(false);
+#elif MPT_COMPILER_GCC || MPT_COMPILER_CLANG
+	__builtin_unreachable();
+#else
+	return;
+#endif
+}
+
+#endif // C++23
+
+
+
 } // namespace MPT_INLINE_NS
 } // namespace mpt