From 639b73ecf9608d9c3078cb9dee5b7c2f46639828 Mon Sep 17 00:00:00 2001
From: Daan <daanl@outlook.com>
Date: Wed, 18 Jun 2025 01:37:16 -0700
Subject: [PATCH] refactor

---
 src/page-map.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/page-map.c b/src/page-map.c
index 65320326..40493389 100644
--- a/src/page-map.c
+++ b/src/page-map.c
@@ -318,13 +318,13 @@ mi_decl_nodiscard static bool mi_page_map_ensure_submap_at(size_t idx, mi_submap
   if mi_unlikely(sub == NULL) {
     // sub map not yet allocated, alloc now
     mi_memid_t memid;
-    mi_page_t** expect = sub;
     const size_t submap_size = MI_PAGE_MAP_SUB_SIZE;
     sub = (mi_submap_t)_mi_os_zalloc(submap_size, &memid);
     if (sub==NULL) {
       _mi_warning_message("internal error: unable to extend the page map\n");
       return false;
     }
+    mi_submap_t expect = NULL;
     if (!mi_atomic_cas_ptr_strong_acq_rel(mi_page_t*, &_mi_page_map[idx], &expect, sub)) {
       // another thread already allocated it.. free and continue
       _mi_os_free(sub, submap_size, memid);