func arena_arena_Slice(arena unsafe.Pointer, slice any, cap int) {
	((*userArena)(arena)).slice(slice, cap)
}

// arena_arena_Free is a wrapper around (*userArena).free.
//
//go:linkname arena_arena_Free arena.runtime_arena_arena_Free
func arena_arena_Free(arena unsafe.Pointer) {
	((*userArena)(arena)).free()
}

// arena_heapify takes a value that lives in an arena and makes a copy