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
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