From: Sir Richard <sir_richard@svn.reactos.org>
Date: Sat, 5 Jun 2010 17:54:19 +0000 (+0000)
Subject: [NTOS]: Defensive programming on the pool macros.
X-Git-Tag: backups/header-work@57446~11^2~46
X-Git-Url: https://git.reactos.org/?p=reactos.git;a=commitdiff_plain;h=81589f83caed3f27c814bfeaed3610addfaa4f7f

[NTOS]: Defensive programming on the pool macros.

svn path=/trunk/; revision=47595
---

diff --git a/reactos/ntoskrnl/mm/ARM3/expool.c b/reactos/ntoskrnl/mm/ARM3/expool.c
index e73d3e112aa..568fb79bb80 100644
--- a/reactos/ntoskrnl/mm/ARM3/expool.c
+++ b/reactos/ntoskrnl/mm/ARM3/expool.c
@@ -29,11 +29,11 @@ PVOID PoolTrackTable;
 PKGUARDED_MUTEX ExpPagedPoolMutex;
 
 /* Pool block/header/list access macros */
-#define POOL_ENTRY(x)       (PPOOL_HEADER)((ULONG_PTR)x - sizeof(POOL_HEADER))
-#define POOL_FREE_BLOCK(x)  (PLIST_ENTRY)((ULONG_PTR)x  + sizeof(POOL_HEADER))
-#define POOL_BLOCK(x, i)    (PPOOL_HEADER)((ULONG_PTR)x + ((i) * POOL_BLOCK_SIZE))
-#define POOL_NEXT_BLOCK(x)  POOL_BLOCK(x, x->BlockSize)
-#define POOL_PREV_BLOCK(x)  POOL_BLOCK(x, -x->PreviousSize)
+#define POOL_ENTRY(x)       (PPOOL_HEADER)((ULONG_PTR)(x) - sizeof(POOL_HEADER))
+#define POOL_FREE_BLOCK(x)  (PLIST_ENTRY)((ULONG_PTR)(x)  + sizeof(POOL_HEADER))
+#define POOL_BLOCK(x, i)    (PPOOL_HEADER)((ULONG_PTR)(x) + ((i) * POOL_BLOCK_SIZE))
+#define POOL_NEXT_BLOCK(x)  POOL_BLOCK((x), (x)->BlockSize)
+#define POOL_PREV_BLOCK(x)  POOL_BLOCK((x), -(x)->PreviousSize)
                 
 /* PRIVATE FUNCTIONS **********************************************************/