From 6a3ca3ca5dbd45126c11fb714ef50121773f1e7e Mon Sep 17 00:00:00 2001
From: Stefan Oberhumer <stefan@obssys.com>
Date: Tue, 5 Oct 2010 00:03:34 +0200
Subject: [PATCH] ntdll: Fix possible overflow computing middle in
 NTDLL_mergesort().

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

diff --git a/dlls/ntdll/misc.c b/dlls/ntdll/misc.c
index 7a939c2c3dd..8496113aeca 100644
--- a/dlls/ntdll/misc.c
+++ b/dlls/ntdll/misc.c
@@ -260,7 +260,7 @@ NTDLL_mergesort( void *arr, void *barr, size_t elemsize, int(__cdecl *compar)(co
 {
     if(right>left) {
         size_t i, j, k, m;
-        m=(right+left)/2;
+        m=left+(right-left)/2;
         NTDLL_mergesort( arr, barr, elemsize, compar, left, m);
         NTDLL_mergesort( arr, barr, elemsize, compar, m+1, right);