From eb29d6b06f0f0d38aa8d7edd036d1dc412395393 Mon Sep 17 00:00:00 2001
From: Daan Leijen <daan@microsoft.com>
Date: Sat, 21 May 2022 10:21:38 -0700
Subject: [PATCH] fix warning on windows

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

diff --git a/src/os.c b/src/os.c
index 82b38007..855cc3a7 100644
--- a/src/os.c
+++ b/src/os.c
@@ -375,7 +375,7 @@ static bool mi_os_mem_free(void* addr, size_t size, bool was_committed, mi_stats
     // the start of the region.
     MEMORY_BASIC_INFORMATION info = { 0, 0 };
     VirtualQuery(addr, &info, sizeof(info));
-    if (info.AllocationBase < addr && ((uint8_t*)addr - (uint8_t*)info.AllocationBase) < MI_SEGMENT_SIZE) {
+    if (info.AllocationBase < addr && ((uint8_t*)addr - (uint8_t*)info.AllocationBase) < (ptrdiff_t)MI_SEGMENT_SIZE) {
       errcode = 0;
       err = (VirtualFree(info.AllocationBase, 0, MEM_RELEASE) == 0);
       if (err) { errcode = GetLastError(); }