First page of http://www.monotypefonts.com/PDFs/OTPGill.pdf takes more than 10 seconds to render on this (low spec) machine the result is incorrect (compared to xpdf) too. FWIW ghostscript 8.71 and 9.0 segfault on this document.
Created attachment 6737 [details] sample file This is a local copy of the sample file. The color space of the image on the first page is rather complicated. It's Indexed color space with DeviceN base color space and Lab alternative color space. I'm not sure whether every attribute is set up correctly there. My copy of gswin32c doesn't crash but the image has wild green colors.
SEGV is reproduced on 64-bit Linux with x11alpha device. x11 renders the image with the same green colors as Windows. The color bug is a recent regression. V. 8.71 shows the file just fine on x11 or Windows display device. The PDF file itself looks correct.
I've fixed the performance issue in MuPDF. Alex, do you want to keep the bug open for the ghostscript issues?
Performance was improved no question about it, but the correctness wasn't, first page is still misrendered with mupdf.
And I take that back, the page is rendered correctly (was using wrong library, sorry about that)
fixed with rev 12380