[FAST486]

CountLeadingZeros64 shouldn't loop forever if "Value" is 0.

svn path=/trunk/; revision=64677

diff --git a/reactos/lib/fast486/common.inl b/reactos/lib/fast486/common.inl
index e31f40b..1b33820 100644 (file)
--- 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;