Merge pull request #800 from trcrsired/master

mutex is an alias if the mutex itself is movable

Author: trcrsired

include/fast_io_core_impl/io_lockable.h

@@ -49,8 +49,7 @@ struct basic_general_io_lockable_nonmovable
 		}
 		else
 		{
-			::std::destroy_at(__builtin_addressof(handle));
-			::std::construct_at(__builtin_addressof(handle), ::std::forward<Args>(args)...);
+			this->handle = T(::std::forward<Args>(args)...);
 		}
 	}
 	constexpr void close() noexcept(noexcept(handle.close()))

include/fast_io_hosted/threads/mutex/impl.h

@@ -37,7 +37,8 @@ using native_mutex =
 	;
 
 template <typename Mutex>
-using basic_mutex_movable = ::fast_io::basic_general_mutex_movable<Mutex, ::fast_io::native_global_allocator>;
+using basic_mutex_movable = ::std::conditional_t<::std::movable<Mutex>, Mutex,
+												 ::fast_io::basic_general_mutex_movable<Mutex, ::fast_io::native_global_allocator>>;
 using native_mutex_movable = ::fast_io::basic_mutex_movable<native_mutex>;
 
 template <typename T>