Bug 708541

Summary:	Error in pdf_rearrange_pages()
Product:	MuPDF	Reporter:	Jorj <jorj.x.mckie>
Component:	mupdf	Assignee:	MuPDF bugs <mupdf-bugs>
Status:	RESOLVED FIXED
Severity:	normal	CC:	robin.watts
Priority:	P2
Version:	1.26.0
Hardware:	All
OS:	All
Customer:		Word Size:	---

Description Jorj 2025-05-13 16:27:26 UTC

The function seems to always throw the exception "Cycle detected in outlines" for any PDF that has a table of contents.
Among failing PDFs also is the Adobe PDF specification 2008.

In PyMuPDF, we can only work with the variant pdf_rearrange_page2(doc, list, 0)
which interfaces with the original.

Comment 1 Robin Watts 2025-05-14 11:49:15 UTC

Fixed with:

commit f84bb9fbe8abea011d500d28d90e3c31c576a209
Author: Robin Watts <Robin.Watts@artifex.com>
Date:   Tue May 13 19:47:55 2025 +0100

    Bug 708541: Fix cycle detection in pdf_rearrange_pages.

    We were marking/checking an object for cycles in strip_outline,
    but we immediately call strip_outlines with it, which checks
    itself!

    Only check in strip_outlines.

Comment 2 Jorj 2025-05-14 12:11:50 UTC

Thanks for such a fast fix!