interrupted by signal 11: SIGSEGV

[artvel]

Reproducible with the following code:

func thumbnail(fp string, w, h uint) (image.Image, error) {
	opts := thumbnailer.Options{
		ThumbDims: thumbnailer.Dims{Width: w, Height: h},
	}
	f, er := os.Open(fp)
	if er != nil {
		return nil, er
	}
	defer f.Close()
	_, thumb, err := thumbnailer.Process(f, opts)
	if err != nil {
		return nil, err
	}
	return thumb, err
}

call:

thumbnail("9_18.5.png",800,1700)

Original size of the image is: 1800x3700
Reproducible with the following image: