From 33bad414bc07fa8a9b79be7144cedd940aeefdda Mon Sep 17 00:00:00 2001
From: Aleksandar Andrejevic <aandrejevic@reactos.org>
Date: Sat, 11 Oct 2014 16:57:33 +0000
Subject: [PATCH] [FAST486] CountLeadingZeros64 shouldn't loop forever if
 "Value" is 0.

svn path=/trunk/; revision=64677
---
 reactos/lib/fast486/common.inl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/reactos/lib/fast486/common.inl b/reactos/lib/fast486/common.inl
index e31f40b1b1a..1b33820dcf9 100644
--- a/reactos/lib/fast486/common.inl
+++ b/reactos/lib/fast486/common.inl
@@ -38,7 +38,7 @@
         ULONG Count = 0;
         ULONGLONG Mask = 1ULL << 63;
 
-        while (!(Value & Mask))
+        while (!(Value & Mask) && Mask)
         {
             Count++;
             Mask >>= 1;
-- 
2.17.1