Rémi Bernon : ntdll: Fix HeapWalk with empty uncommitted consecutive subheaps.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 805247ace3a3abc0f496834342482fba2a6631bc
URL:    https://gitlab.winehq.org/wine/wine/-/commit/805247ace3a3abc0f496834342482fb...

Author: Rémi Bernon 
Date:   Fri Jan 27 16:51:41 2023 +0100

ntdll: Fix HeapWalk with empty uncommitted consecutive subheaps.

---

dlls/ntdll/heap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ntdll/heap.c b/dlls/ntdll/heap.c
index 9403c83e92c..a2410957a44 100644
--- a/dlls/ntdll/heap.c
+++ b/dlls/ntdll/heap.c
@@ -653,7 +653,7 @@ static SUBHEAP *find_subheap( const struct heap *heap, const struct block *block
         if (!check_subheap( subheap, heap )) return NULL;
         if (contains( first_block( subheap ), blocks_size, block, sizeof(*block) )) return subheap;
         /* outside of blocks region, possible corruption or heap_walk */
-        if (contains( subheap_base( subheap ), subheap_size( subheap ), block, 0 )) return heap_walk ? subheap : NULL;
+        if (contains( subheap_base( subheap ), subheap_size( subheap ), block, 1 )) return heap_walk ? subheap : NULL;
     }

return NULL;