initial working large alignment

src/page.c

@@ -792,7 +792,7 @@ void mi_register_deferred_free(mi_deferred_free_fun* fn, void* arg) mi_attr_noex
 // that frees the block can free the whole page and segment directly.
 static mi_page_t* mi_huge_page_alloc(mi_heap_t* heap, size_t size, size_t page_alignment) {
   size_t block_size = _mi_os_good_alloc_size(size);
-  mi_assert_internal(mi_bin(block_size) == MI_BIN_HUGE);
+  mi_assert_internal(mi_bin(block_size) == MI_BIN_HUGE || page_alignment > 0);
   mi_page_t* page = mi_page_fresh_alloc(heap,NULL,block_size,page_alignment);
   if (page != NULL) {
     const size_t bsize = mi_page_block_size(page);  // note: not `mi_page_usable_block_size` as `size` includes padding already