Special case for a depth of 0

diff --git a/MagickCore/quantum-private.h b/MagickCore/quantum-private.h
index ce5f1a88ab947f0d684b3ff931b4a7a8dada0ad2..405c3810e6089a14823c427f66eaf12fad0f0e19 100644 (file)
--- a/MagickCore/quantum-private.h
+++ b/MagickCore/quantum-private.h
@@ -95,6 +95,8 @@ static inline MagickSizeType GetQuantumRange(const size_t depth)
   MagickSizeType
     one;
 
+  if (depth == 0)
+    return(0);
   one=1;
   return((MagickSizeType) ((one << (MagickMin(depth,64)-1))+
     ((one << (MagickMin(depth,64)-1))-1)));