static MMAP_HANDLE mmap_start = 0; /* Head of linked list */
static size_t page_size = 0; /* Size of VM pages */
-static int mmap_hysteresis; /* Should be size_t, really. */
+static Fixnum mmap_hysteresis; /* Logically a "size_t" */
/* Get a new handle for a fresh block. */
static MMAP_HANDLE