Bug 105081

Summary:	(regression) pdftocairo damages this PDF when converting to PS or PDF
Product:	poppler	Reporter:	Alex Korobkin <korobkin+lpad>
Component:	cairo backend	Assignee:	poppler-bugs <poppler-bugs>
Status:	RESOLVED DUPLICATE	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	isandlsmissing.pdf is-cairo53.pdf is-cairo53.ps is-cairo24.pdf is-cairo24.ps

Description Alex Korobkin 2018-02-13 19:51:10 UTC

This seemingly valid PDF gets curiously broken, when converted by pdftocairo into level 3 PS or PDF, letters i and l are missing from the result. 

Cairo 1.14.12, poppler-utils 0.53.0, both commands produce a resulting PDF or PS where letters i and l are missing:

pdftocairo -ps -level3 isandlsmissing.pdf is-cairo53.ps
pdftocairo -pdf isandlsmissing.pdf is-cairo53.pdf

Same commands produce correct files on Ubuntu 14.04, cairo 1.13.1, poppler-utils 0.24.5.

pdftocairo -ps -level3 isandlsmissing.pdf is-cairo24.ps
pdftocairo -pdf isandlsmissing.pdf is-cairo24.pdf

Original PDF was validated with Adobe Pro DC, no syntax errors found. Here is the report. 

Preflight Summary Report for: isandlsmissing.pdf
Profile: Report PDF syntax issues (Processed pages 1 to 1)
Results (Summary): No problems found

File name: "isandlsmissing.pdf"
PDF version number: "1.7"
File size (KB): 59.2
Creator: "PDFium"
Created: "2/13/2018 2:48 PM"
Trapping: "Unknown"
Preflight, 15.2.0 (199)
Acrobat version: 18.90


Also attached are PDF and PS results produced by pdftocairo version 0.24.5 (is-cairo24.ps, pdf) and version 0.53.0 (is-cairo53.pdf,ps)

Comment 1 Alex Korobkin 2018-02-13 19:52:49 UTC

Created attachment 137328 [details]
isandlsmissing.pdf

Comment 2 Alex Korobkin 2018-02-13 19:53:09 UTC

Created attachment 137329 [details]
is-cairo53.pdf

Comment 3 Alex Korobkin 2018-02-13 19:53:22 UTC

Created attachment 137330 [details]
is-cairo53.ps

Comment 4 Alex Korobkin 2018-02-13 19:53:36 UTC

Created attachment 137331 [details]
is-cairo24.pdf

Comment 5 Alex Korobkin 2018-02-13 19:53:48 UTC

Created attachment 137332 [details]
is-cairo24.ps

Comment 6 Alex Korobkin 2018-02-28 16:38:16 UTC

Reproduced on Debian testing (buster), poppler 0.61.1, cairo 1.14.10.

Comment 7 Alex Korobkin 2018-07-05 19:15:47 UTC

Perhaps someone could have a quick look at this weird bug?

Comment 8 Jason Crain 2018-07-05 19:33:05 UTC

(In reply to Alex Korobkin from comment #7)
> Perhaps someone could have a quick look at this weird bug?

Try it with cairo version >= 1.15.4. It could be https://bugs.freedesktop.org/show_bug.cgi?id=94615 .

Comment 9 Alex Korobkin 2018-07-06 15:49:15 UTC

Thanks so much, Jason! That was it. 
I backported a patch for my 1.14.12 from https://bugs.launchpad.net/ubuntu/+source/cairo/+bug/1734092

and it fixed the issue.

*** This bug has been marked as a duplicate of bug 94615 ***

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