https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5826

diff --git a/MagickCore/draw.c b/MagickCore/draw.c
index ad2c28104a710b83bd7fe5e918687dcce76ea734..1a251683bcddaa2ee873aab4974feb40eaf2f27e 100644 (file)
--- a/MagickCore/draw.c
+++ b/MagickCore/draw.c
@@ -3469,7 +3469,7 @@ MagickExport MagickBooleanType DrawGradientImage(Image *image,
     composite=zero;
     offset=GetStopColorOffset(gradient,0,y);
     if (gradient->type != RadialGradient)
-      offset/=length;
+      offset*=PerceptibleReciprocal(length);
     for (x=bounding_box.x; x < (ssize_t) bounding_box.width; x++)
     {
       GetPixelInfoPixel(image,q,&pixel);