guix/gnu/packages/patches/imagemagick-WriteTHUMBNAILImage-fix.patch

From 6a5d3575487487f2703383338bd17c8c25068f19 Mon Sep 17 00:00:00 2001
From: Cristy <mikayla-grace@urban-warrior.org>
Date: Thu, 25 Mar 2021 08:58:18 -0400
Subject: [PATCH] eliminate compiler warning

---
 coders/thumbnail.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/coders/thumbnail.c b/coders/thumbnail.c
index 3833341b0..1e2bfe8c2 100644
--- a/coders/thumbnail.c
+++ b/coders/thumbnail.c
@@ -199,7 +199,7 @@ static MagickBooleanType WriteTHUMBNAILImage(const ImageInfo *image_info,
     q++;
   }
   if ((q > (GetStringInfoDatum(profile)+GetStringInfoLength(profile))) ||
-      (length > (GetStringInfoDatum(profile)+GetStringInfoLength(profile)-q)))
+      ((ssize_t) length > (GetStringInfoDatum(profile)+GetStringInfoLength(profile)-q)))
     ThrowWriterException(CoderError,"ImageDoesNotHaveAThumbnail");
   thumbnail_image=BlobToImage(image_info,q,length,&image->exception);
   if (thumbnail_image == (Image *) NULL)
-- 
2.31.0