fix undefined-shift in ReadTGAImage @ https://oss-fuzz.com/testcase?k…

…ey=5129864151957504
ImageMagick · Oct 12, 2022 · b79a3d6 · b79a3d6
1 parent 20875a2
commit b79a3d6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/coders/tga.c b/coders/tga.c
@@ -453,7 +453,7 @@ static Image *ReadTGAImage(const ImageInfo *image_info,ExceptionInfo *exception)
             if ((x & 0x07) == 0)
               index=(IndexPacket) ReadBlobByte(image);
             else
-              index=(Quantum) ((ssize_t) index << 1);
+              index=(Quantum) ((size_t) index << 1);
             if (tga_info.colormap_type != 0)
               pixel=image->colormap[(ssize_t) ConstrainColormapIndex(image,
                 ((unsigned char) index) & 0x80 ? 1 : 0)];