https://github.com/ImageMagick/ImageMagick/issues/1720

diff --git a/MagickCore/quantize.c b/MagickCore/quantize.c
index 40b97456a577a7cba887c3595a20bafce570edd6..d65cb2d7e2fe9d817be04cbfd78dbd48de6bc3ad 100644 (file)
--- a/MagickCore/quantize.c
+++ b/MagickCore/quantize.c
@@ -3282,17 +3282,17 @@ extern "C" {
 
 static int IntensityCompare(const void *x,const void *y)
 {
-  double
-    intensity;
-
   PixelInfo
     *color_1,
     *color_2;
 
+  ssize_t
+    intensity;
+
   color_1=(PixelInfo *) x;
   color_2=(PixelInfo *) y;
-  intensity=GetPixelInfoIntensity((const Image *) NULL,color_1)-
-    GetPixelInfoIntensity((const Image *) NULL,color_2);
+  intensity=(ssize_t) (GetPixelInfoIntensity((const Image *) NULL,color_1)-
+    GetPixelInfoIntensity((const Image *) NULL,color_2));
   return((int) intensity);
 }